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Showing posts from May, 2023

Lattice built with negative thermal expansion properties reveals unique relaxation mechanism

https://phys.org/news/2023-05-lattice-built-negative-thermal-expansion.html "tiny, cage-like structures that shrink a certain amount when exposed to a certain temperature. The shrinking occurs due to spring-like properties of the cages. They were made by introducing organic linkers into a skeleton made of a metal-organic rotaxane. U3(bcbpy)3(CB8)... negative thermal expansion that corresponded with a given recovery stage in the material. The researchers suggest the material could have applications where size and shape control in response to heat are needed" Related: Researchers engineer a material that can perform different tasks depending on temperature https://techxplore.com/news/2023-11-material-tasks-temperature.html

Understanding the tantalizing benefits of tantalum for improved quantum processors

https://phys.org/news/2023-05-tantalizing-benefits-tantalum-quantum-processors.html "Tantalum dense, easy to work with, high melting point, resistant to corrosion and superconductor... Tantalum-based superconducting qubits lifetimes >half ms... The team found several different kinds of tantalum oxides at the surface of the tantalum, which has prompted a new set of questions on the path to creating better superconducting qubits" Related: Bures and Sjöqvist metrics over thermal state manifolds for spin qubits and superconducting flux qubits https://phys.org/news/2023-07-bures-sjqvist-metrics-thermal-state.html

Study demonstrates the potential of ferroelectric hafnia for developing low-power logic devices

https://techxplore.com/news/2023-05-potential-ferroelectric-hafnia-low-power-logic.html "enables smaller devices... ferroelectric hafnium dioxide (HfO2) or hafnia... 2nm film gate stack FinFET increased total capacitance... 10^15 cycles voltage pulses NDC advanced logic devices... Notably, the team's approach for leveraging NDC in compact transistors does not require any structural modifications to the devices and is also compatible with 3D architectures. This makes it easier to implement on a large-scale"

The next generation of solar energy collectors could be rocks

https://techxplore.com/news/2023-05-generation-solar-energy-collectors.html "granite samples store solar heat... Magnesite in soapstone high energy density and stability at high temperatures... When heated to  soapstone samples and the Usagaran granite had no visible cracks temperatures >1800°F.. Additionally, the soapstone was more likely to release its stored heat than the granite. In all, the Craton soapstone had the best performance as a TES, able to absorb, store and transmit heat effectively while maintaining good chemical stability and mechanical strength" Related: New review discusses progress in the design of porous volumetric solar receivers https://techxplore.com/news/2023-08-discusses-porous-volumetric-solar.html

Scientists eport breakthrough with very low cost calcium metal battery

https://oilprice.com/Alternative-Energy/Renewable-Energy/Scientists-Report-Breakthrough-With-Very-Low-Cost-Calcium-Battery.html "500 cycles repeated charge-discharge... copper sulfide (CuS) nanoparticle/carbon composite cathode and a hydride-based electrolyte... capacity  560 mAh g-1 – 2 to 3X higher than cathode materials for lithium-ion... 92% capacity" Related: A new strategy to design high-entropy electrolytes for lithium metal batteries https://techxplore.com/news/2023-07-strategy-high-entropy-electrolytes-lithium-metal.html Researchers develop breakthrough prototype of stretchable fabric-based lithium-ion battery https://techxplore.com/news/2023-07-breakthrough-prototype-stretchable-fabric-based-lithium-ion.html Hollow carbon co-doped anatase titanium dioxide spheres hold promise for high-performance metal ion batteries https://techxplore.com/news/2023-07-hollow-carbon-co-doped-anatase-titanium.html One step closer to lithium metal batteries that function with minimal e

High-power, high-energy, all-fiber Mamyshev oscillator

https://phys.org/news/2023-05-high-power-high-energy-all-fiber-mamyshev-oscillator.html "width 73 fs... through adjusting the cavity parameters, a maximum 5th order harmonic mode-locking operation was obtained with an output average power of 3.4 W and a compressed pulse width of 100 fs... cascade spectral broadening and offset spectral filtering... core/cladding diameter 10/125 μm... single amplification arm... single pulse energy 153 nJ and average power 3.4 W... compact, flexible, good heat dissipation and high beam quality... material processing, medicine, advanced manufacturing" Related: Nano-oscillator hits record quality factor https://phys.org/news/2024-03-nano-oscillator-quality-factor.html

Using nanofaceting to manipulate quantum dots into nanocrystals

https://phys.org/news/2023-05-nanofaceting-quantum-dots-nanocrystals.html "nanofaceting forming solvent small flat surfaces on nanoparticles manipulate quantum dots into nanocrystals... solvent and monitored development in real time using computer simulations and powerful microscope technology... image sensors and low-carbon footprint LEDs which will enable industry to implement the quantum dot nanocrystals into their technologies to boost their resolution and energy efficiency... optoelectronics, energy harvesting, photonics, and biomedical imaging" Related: A solid-state quantum microscope that controls the wave functions of atomic quantum dots in silicon https://phys.org/news/2023-07-solid-state-quantum-microscope-functions-atomic.html

New-look infrared lens shines a light on future technology and manufacturing

https://phys.org/news/2023-05-new-look-infrared-lens-future-technology.html "polymer sulfur and cyclopentadiene transmit infrared light... provides black plastic high transparency to UV detected by thermal imaging cameras... ... UV passes through the polymer, so one can see through it using an infrared camera. This property is useful for defense operations and wildlife surveillance... highest long-wave UV transparency... low cost... military, civil aerospace, defense, security, surveillance, medicine, electrical engineering, space exploration and autonomous vehicle" Related: Now You Can Have Thermal Cameras For Daily Use https://nerdyinfo.com/now-you-can-have-thermal-cameras-for-daily-use/

Researchers achieve record 19.31% efficiency with organic solar cells

https://techxplore.com/news/2023-05-efficiency-solar-cells.html "polymer OSC morphology-regulating 1,3,5-trichlorobenzene crystallization regulator... non-monotonic intermediated state manipulate bulk-heterojunction OSC morphology and simultaneously optimize crystallization dynamics and energy loss... ordered molecular stacking and favorable molecular aggregation... lowering non-radiative recombination loss... portable electronics and building-integrated PVs... record low non-radiative recombination loss of 0.168 eV binary OSC... PCE >19%" Related: Pioneering Power: The Breakthrough of Organic Solar Cells https://www.energyportal.eu/news/pioneering-power-the-breakthrough-of-organic-solar-cells/1630/ Breakthrough in understanding charge transport in organic solar cells https://phys.org/news/2023-06-breakthrough-solar-cells.htm Proposed design could double the efficiency of lightweight solar cells for space-based applications https://techxplore.com/news/2023-06-efficiency-li

Quantum matter breakthrough: Tuning density waves

https://actu.epfl.ch/news/quantum-matter-breakthrough-tuning-density-waves/   "cold crystalline atomic gas... 2X ability program interactions between atoms... metals, insulators, and superconductors... unitary Fermi gas placed optical cavity interact at long distance, 1st atom emit photon bounces onto mirrors, reabsorbed by 2nd atom... atoms collectively organize density wave pattern... combined atoms colliding directly with each other exchanging photons over long distanc... efficient energy transfer and storage, quantum computers"

Forging a dream material with semiconductor quantum dots

https://phys.org/news/2023-05-forging-material-semiconductor-quantum-dots.html "superlattice of lead sulfide semiconducting colloidal quantum dots behave like metal... brighter, use less energy... individual quantum dots attach together directly, "epitaxially," without ligands with facets precisely oriented... million times more conductive... improve efficiency energy conversion, biological imaging, fluorescent probes, electronic displays, and quantum computing"

The first experimental observation of subpicosecond electron bunches originating from an ultracold source

https://phys.org/news/2023-05-experimental-subpicosecond-electron-bunches-ultracold.html "photoionizing laser-cooled rubidium gas in a grating magneto-optical trap via a two-step process. In the self-compression point of this source, measured electron bunches as short as 735±7, combination of ionization and energy spread... increase ionization laser pulse length10X without impacting electron bunch length... use of narrow band and more precise laser wavelength... shorten pulses at expense of energy spreading through source or vice-versa... single-shot, ultrafast electron crystallography of proteins" Related: Breakthrough Research Unveils New Method for Ultrahigh Power Laser Pulse Compression https://news.unist.ac.kr/breakthrough-research-unveils-new-method-for-ultrahigh-power-laser-pulse-compression/

Researchers present an unsupervised learning-based optical fiber imaging system

  https://phys.org/news/2023-05-unsupervised-learning-based-optical-fiber-imaging.html "endoscopic diagnosis, deep-brain imaging... integrate Cycle Generative Adversarial Network Glass-Air Anderson Localizing Optical Fiber ... removes restrictions labeled training data, high-quality imaging recovery, high-fidelity highly robust imaging... artifact-free robust transport full-color biological images meter-long 1000 image pairs without paired training... training data size reduced 10X... resilience against 60° strong mechanical fiber bending and large working distance variations 6 mm"

Twisting under the stroboscope – controlling crystal lattices of hybrid solar cell materials with terahertz light

https://www.fhi.mpg.de/1283827/2023-05-24-Twisting-Under-the-Stroboscope "lead halide perovskite semiconductors... applying sudden electric field spike faster than picosecond single light cycle far-UV THz... inorganic crystal lattice periodic cages for hosting organic molecules... isolate lattice response to electric field timescales faster than 100 fs... mimic local electric field excited charge carrier immediately after absorption quantum of sunlight... charge carrier protection mechanism, crystallographic phase or electronic bandgap... modulate twist single THz light cycle"

Team successfully demonstrates laser-induced monolayer graphene nanoprocessing

https://phys.org/news/2023-05-team-successfully-laser-induced-monolayer-graphene.html "multi-point hole drilling without damaging graphene film... machining and create holes with diameters 70 nm to >1 mm... nanopores and defects manipulated using femtosecond laser irradiation...  electrical conductivity controlled including quantum-level spin and valley. Moreover, the contaminant removal by femtosecond laser irradiation found in this research could develop a new method for non-destructively and cleanly washing high-purity graphene... quantum materials and biosensor development"

Solar harvesting system hits Landsberg efficiency limit of 93.3%

https://uh.edu/news-events/stories/october-2022/10032022-bo-zhao-solar-harvesting-24-7.php "nonreciprocal intermediate layer suppress back emission to sun and funnel more photon flux towards cell... compactness and dispatchability (electricity that can be programmed on demand based on market needs)... STPVs can be coupled with an economical thermal energy storage unit to generate electricity 24/7...  power plants" Related: Breaking News: Scientists Unveil Revolutionary Breakthrough in Renewable Enery https://infcelb.rf.gd/bignews/?i=1

Capturing non-transparent ultrafast scenes

https://phys.org/news/2023-05-capturing-non-transparent-ultrafast-scenes.html "ssub-picosecond patial and temporal resolution ultrashort dynamic evolution... capture a movie of irreversible ultrafast phenomena with an inter-frame time interval of less than 1 picosecond... ultrafast lasers, high-speed cameras, and computational imaging >1 trillion fps... bypasses need for any THz high-speed devices... investigation of non-repeatable or destructive dynamics advanced materials and structures such as 2D materials, and biological matter, like skin and corneas which typically optically opaque" Related: Physics informed supervised learning framework could make computational imaging faster https://phys.org/news/2023-07-physics-framework-imaging-faster.html Researchers achieve high-speed super-resolution imaging with a large field of view https://phys.org/news/2023-08-high-speed-super-resolution-imaging-large-field.html Technology using all-optical mechanisms has potential to recor

Developing a smart chip based on the human brain

https://techxplore.com/news/2023-05-smart-chip-based-human-brain.html "neuromorphic computing interact with our bodies... Self-driving cars, facial recognition, language recognition, smart prosthetic arm... conductive organic polymers... ambipolar P-3O vary resistance and retain connection created, works both with liquid and solid (ion gel) electrolytes... linking cells to each other make complex circuits... measuring weak signals, such as minute muscle movements, or signals that are surrounded by a lot of noise, such as a heartbeat" Related: AI chips are hot. Here's what they are, what they're for and why investors see gold https://techxplore.com/news/2023-06-ai-chips-hot-theyre-investors.html

All-optical, near-infrared imaging via ultra-thin structured films

https://phys.org/news/2023-05-all-optical-near-infrared-imaging-ultra-thin.html "400–1000nm, 1000–2500nm and >2500 nm frequency bands without needing to convert light to electrons and vice-versa... concept of nonlinear metasurfaces... thin silicon film accommodates nanoscale holes... generates new color 1/3 original wavelength via 3rd harmonic generation... heating not concern... centrosymmetric material enables nonlinear silicon metasurfaces use for other third-order nonlinear interactions beyond THG... thin, inexpensive, broadband, and colorful NIR cameras and detectors"

Quantum scientists accurately measure power levels 1 trillion times lower than usual

https://phys.org/news/2023-05-quantum-scientists-accurately-power-trillion.html "femtowatt level ultra-low temperatures... quantum microwave measurements... heater on bolometer... known heater current and measure voltage... self-calibrating... improve quantum computers performance... covers broad range frequencies... broadband sensor"

Joint research team succeeds in transporting light using non-Hermitian meta-gratings

https://phys.org/news/2023-05-joint-team-succeeds-non-hermitian-meta-gratings.html "non-Hermitian meta-grating controls light beam direction... light and SPP propagate in opposite directions by controlling meta-grating size and distance... convert incident light into SSPs back to normal light... detection of antigens for disease diagnosis or harmful gases in atmosphere... brings non-Hermitian optics to the nano-scale territory. It will contribute to the development of future plasmonic devices that have excellent direction controllability and performance."

Study presents a new, highly efficient converter of quantum information carriers

https://phys.org/news/2023-05-highly-efficient-quantum-carriers.html "refractive index of lithium niobate crystal altered depending on changes in external electric signals... time-varying optical thickness implementing time lens... increase refractive index in stages... achieve strong effect without destroying lens allowing modifications of quantum light pulses... transferring single photons between different parts of world, thus giving rise to the quantum Internet... car headlights, lighthouses, railroad signals, and even smartphone cameras"

Progressive quantum leaps—high-speed, thin-film lithium niobate quantum processors driven by quantum emitters

https://phys.org/news/2023-05-quantum-leapshigh-speed-thin-film-lithium-niobate.html "integrated with deterministic solid-state single photon sources using quantum dots nanophotonic waveguides... processed generated photons within low-loss several GHz 4-mode universal photonic circuit.... scalable quantum technologies merging integrated photonics with solid-state deterministic photon sources... multiphoton gates, fusion measurements and circuits for quantum computation experiments or analog quantum simulation."

Quantum matter breakthrough: Tuning density waves

https://phys.org/news/2023-05-quantum-breakthrough-tuning-density.html "doubles interactions between atoms of cold unitary Fermi gas... placed in optical cavity to confine light in small space... Optical cavities 2 facing mirrors reflect incoming light back and forth 1,000sX allowing light particles, photons build up inside cavity... cavity causes particles interact long distance: first atom emit photon bounces onto mirrors, reabsorbed by 2nd regardless how far from 1st, when enough photons emitted and reabsorbed, atoms collectively organize into density wave pattern"

Engineers harvest abundant clean energy from humidity in the air, 24/7

https://techxplore.com/news/2023-05-harvest-abundant-energy-thin-air.html "pepper with nanopores <100 nm diameter... generic Air-gen effect... water molecules would easily bump into the pore's edge as they pass through the thin layer. This means that the upper part of the layer would be bombarded with many more charge-carrying water molecules than the lower part, creating a charge imbalance, like that in a cloud, as the upper part increased its charge relative to the lower part... runs as long as there is any humidity in the air... KW electrical utility usage" Related: The air-gen effect: a breakthrough in renewable energy https://innovationorigins.com/en/the-air-gen-effect-a-breakthrough-in-renewable-energy/

Smart material prototype challenges Newton's laws of motion

https://phys.org/news/2023-05-smart-material-prototype-newton-laws.html "electrical signals control direction and intensity energy waves traveling through aircraft without light and small metastructures... controlling radar waves scan specific area objects or managing vibration created by air turbulence from aircraft, monitor health of civil structures such as bridges and pipelines... force and acceleration not going same direction, thereby providing us with an unconventional way to customize the design of an object's structural dynamics, or properties to challenge Newton's second law" Related: New radar research overcomes nearly century-old trade-off between wavelength and distance resolution https://phys.org/news/2023-08-radar-century-old-trade-off-wavelength-distance.html

Room-temperature, solid-state synthesis of high-quality CCI thin films

https://phys.org/news/2023-05-room-temperature-solid-state-synthesis-high-quality-cci.html "cesium copper iodide... deposited thin films of CuI and CsI onto a silica substrate evaporation... room temperature form transparent and highly smooth films with high optical transmittance 92%... depositing CuI over CsI yellow light-emitting thin CsCu2I3... controlled adjusting thickness... depositing through shadow mask... central blue light-emitting Cs3Cu2I5 region bordered by a yellow light-emitting CsCu2I3 region... high-quality thin film devices with ideal optical properties for advanced stacking applications"

Research discovery unlocks thermal energy storage optimization

https://techxplore.com/news/2023-05-discovery-thermal-energy-storage-optimization.html "composite phase change materials... store rapidly... simplify designing near-optimal composite phase change material calculated without exhaustive computational fluid dynamic calculations or extensive iterative design... minimization temperature rise, maximization effective volumetric heat capacity and maximization effective heat capacity based on mass... cylindrical composites... treating system as effective composite allowed them to quickly simplify the calculations and predict near-optimal structures" Related: Scientists use seaweed to create new material that can store heat for reuse https://phys.org/news/2023-06-scientists-seaweed-material-reuse.html Brenmiller bGen Zeo for Heat Electrification https://www.altenergymag.com/news/2023/08/04/brenmiller-to-unveil-next-generation-thermal-energy-storage-system%E2%80%94the-bgen-zero-for-heat-electrification-and-industrial-sector-decarbonizat

Stretching metals at the atomic level allows researchers to create important materials for quantum applications

https://phys.org/news/2023-05-metals-atomic-important-materials-quantum.html "quantum computing, microelectronics, sensors, energy catalysis, and battery and fuel cell chemical reactions... navigating material atomic synthesis harnessing epitaxial strain... incorporating a concept called "epitaxial strain"—effectively stretching the metals at the atomic level simplifies oxidation process of these stubborn metals... metal oxides out of stubborn metals in ultra-high vacuum atmospheres, which has been a longstanding problem... stretching material at atomic scale improve performance"

Stable qubit is a prime candidate for universal quantum computer

https://phys.org/news/2023-05-stable-qubit-prime-candidate-universal.html "more reliable intrinsically stable... easily mass-produced... hybrid spin qubits in semiconductors and transmon qubits in superconducting circuits... directly manipulate the spin of the qubit using a microwave signal... high Rabi frequencies embedded within superconducting transmon qubit which enables fast measurement of the qubit state... longevity affected by magnetic field from the surrounding materials... direct strong coupling between spin qubit and superconducting qubit" Related: The observation of a quantum disordered ground state in a triangular lattice magnet https://phys.org/news/2023-05-quantum-disordered-ground-state-triangular.html

NVIDIA Grace Drives Wave of New Energy-Efficient Arm Supercomputers

https://nvidianews.nvidia.com/news/nvidia-grace-drives-wave-of-new-energy-efficient-arm-supercomputers "384 Arm NVIDIA Grace CPU Neoverse platform's Isambard 3... 6x performance and energy efficiency Isambard 2... FP64 peak performance 2.7 PFLOPS <270 KW... life sciences, medical, astrophysics, biotech, wind farms, fusion reactors, Parkinson’s disease, osteoporosis and COVID-19... highest-performing cores, highest memory bandwidth and optimal memory capacity per core provided by Grace... spring 202... users to increase significantly beyond the current 800" Related: AI chip race heats up as AMD introduces rival to Nvidia technology https://techxplore.com/news/2023-06-ai-chip-amd-rival-nvidia.html New material could hold key to reducing energy consumption in computers and electronics https://www.eurekalert.org/news-releases/995423

High-quality 2D films could be one-drop away

https://www.eurekalert.org/news-releases/989832 "high-quality, large couple nanometers thick in 1 minute with single click... industrial nanosheet devices... automated film-forming... simple drop colloidal aqueous solution onto substrate hotplate using automatic pipette... tiled monolayer film no gaps between nanosheets... simple, quick, and requires only a small amount of solution... oxides, graphene, and boron nitride... electronics, catalysis, energy storage, biomedicine, solar cells, sensors and batteries... electrical, transparency, and heat-resistance functions" Related: Countercation engineering for thermoresponsive graphene-oxide nanosheets https://phys.org/news/2023-08-countercation-thermoresponsive-graphene-oxide-nanosheets.html

Study reveals generation mechanism of radiative effects on novel active optical hyperspectral LiDAR system

https://phys.org/news/2023-05-reveals-generation-mechanism-effects-optical.html "analysis and correction distance effect and incidence angle effect carried out independently... piecewise function couples quadratic and decay functions analyze and correct distance effect... Poullain algorithm analyze and correct incidence angle effect... heterogeneity target roughness factor and diffuse reflection coefficient under different incidence angles and wavelengths... correction result SD reduced 30% to 60%, compared with the echo intensity and reflectivity under standard 0-degree incidence angle...  by 12/2023"

Self-healable and crack-resistant hydrogel microfibers inspired by spider silk

https://techxplore.com/news/2023-05-self-healable-crack-resistant-hydrogel-microfibers-spider.html " ionic hygroscopic positively charged polyelectrolyte and polymethacrylic acid...  ambient conditions... water evaporation as separated nanophases embedded in the soft PDMAEA-Q/PMAA matrix... Such a hierarchical nanoconfinement imparts hydrogel microfibers with very high mechanical properties. For example, the hydrogel fiber is rather robust with a high Young′s modulus of 428 MPa and elongation of 219%... actuating fibers of prosthetic limbs or wearable devices" Related: Spider silk is spun by silkworms for the first time, offering a green alternative to synthetic fibers https://www.sciencedaily.com/releases/2023/09/230920111134.htm New reusable and recyclable environmentally friendly hydrogel https://phys.org/news/2023-12-reusable-recyclable-environmentally-friendly-hydrogel.html Scientists spin naturalistic silk from artificial spider gland https://phys.org/news/2024-01-scien

Team uses 3D printing to strengthen a key material in aerospace, energy-generation applications

https://news.mit.edu/2023/team-uses-3d-printing-strengthen-material-key-applications-aerospace-energy-generation-0519 "withstand high temperatures, tensile stresses... simple, inexpensive... metallic powder strengthened with ceramic nanowires... Inconel 718 milled wih ceramic nanowires...  powder bed fusion 3D printing thin powder layers exposed to laser melting it, another powder layer spread on top... less porosity and fewer cracks than parts... ductile, resistance to radiation and high-temperature loading... printing metal matrix composites of Inconel 718 reinforced by [ceramic] nanowires... huge new space for alloy design" Related: Chinese scientists develop technology to create 3D ceramic printing without support https://interestingengineering.com/innovation/chinese-scientists-develop-technology-to-create-3d-ceramic-printing-without-support

Topologically structured light detects the position of nano-objects with atomic resolution

https://phys.org/news/2023-05-topologically-position-nano-objects-atomic-resolution.html "characterize systems or phenomena scale of fraction of billionth of meter... atomic scale metrology collecting single-shot images diffraction pattern topologically structured light with wavelength λ = 488 nm scattered on suspended nanowire 17-μm-long 200-nm-wide, to determine position relative to fixed edges of sample... subatomic precision 92 pm (i.e., around λ/5,300), while the nanowire naturally thermally oscillated with amplitude of ∼150 pm. For reference, a silicon atom is 220pm in diameter"

Exploring a novel way to convert heat to electricity

https://phys.org/news/2023-05-exploring-electricity.html "depositing 100k's microscopic columns  gallium nitride atop silicon wafer which are removed from wafer's underside, thin sheet remains... interaction between pillars and silicon sheet transport silicon heat enabling convert to electric... wrapped around steam or exhaust pipes... interaction between phonons slow traveling phonons reducing thermal conductivity... phonon interaction accomplishes this feat while leaving the electrical conductivity of the silicon sheet unchanged"

FlexBoard: flexible and rapid prototyping of electronic devices

https://techxplore.com/news/2023-05-flexible-rapid-prototyping-electronic-devices.html "flexible breadboard rapid prototyping interactive sensors, actuators, and displays on curved and deformable balls or clothes... living hinge pattern... 3D printed... enhance virtual reality gaming through controllers and gloves... bending 1,000X without breaking... workout equipment, kitchen tools, furniture"

Researchers report technique to fabricate nanosheets in one minute

https://phys.org/news/2023-05-technique-fabricate-nanosheets-minute.html   "reduction  of colloidal aqueous solution surface tension and promotion nanosheet convection suppressed overlap and gaps between nanosheets and allowed alignment conrol... oxides, graphene, and boron nitride, and can form films on substrates of various shapes, sizes, and materials... electronics, catalysis, energy storage, solar cells, sensors and batteries biomedicine"

Electrifying achievement for making more sustainable polymers

https://phys.org/news/2023-05-electrifying-sustainable-polymers.html "room temperature...no hazardous chemical initiators, just electricity,... gold mining and recycling e-waste... adding electron to monomer, then electrified... reacts with another building block in chain reaction forming polymer... environmentally friendly... sulfur-sulfur bonds in  backbone... polymer could remove 97% of gold from solutions of relevance to mining and e-waste recycling... self-correcting ensuring uniform polymer" Related: Team constructs highly active covalent organic framework from benzimidazole monomer in solvothermal pathway https://phys.org/news/2023-06-team-highly-covalent-framework-benzimidazole.html New study reveals key to sustainable, eco-friendly, next-generation polymers https://phys.org/news/2023-06-reveals-key-sustainable-eco-friendly-next-generation.html Simultaneous synthesis and fixing of covalent organic frameworks https://phys.org/news/2023-07-simultaneous-synthesis-covalen

Wiring up quantum circuits with light

https://phys.org/news/2023-05-wiring-quantum-circuits.html "entangled low-energy microwave with high-energy optical photons... superconducting cavity houses crystal and enhances interaction... laser  send billions optical photons into electro-optic crystal for fraction of microsecond... optical photon splits, entangles, optical and microwave photon... avoids a breakdown of superconductivity, but it also helps to cool the device more effectively and to keep it cold during the short timescales of the optical laser pulses... quantum network and quantum-enhanced sensing" Related: Widely tuneable terahertz lasers boost photo-induced superconductivity in K₃C₆₀ https://phys.org/news/2023-10-widely-tuneable-terahertz-lasers-boost.html

Researchers develop photochromic active colloids for the development of new smart materials

https://phys.org/news/2023-05-photochromic-colloids-smart-materials.html "wavelength-selective intelligent colloid light-controlled multi-dimensional phase segregation... dynamic photochromic nanoclusters mixing cyan, magenta and yellow microbeads... light-induced vertical phase stratification... enriched colored microbeads corresponding to incident spectrum... particle–particle interaction controlled combining incident light different wavelengths and intensities... mixing TiO2 microbeads species with dyes of different absorption spectra on-demand particle segregation realized" Related: Metal nanoclusters are tunable for many applications from catalysis to biomedicine, says study https://phys.org/news/2023-06-metal-nanoclusters-tunable-applications-catalysis.html

Scientists discover semi-metallization and novel photoelectric behavior in lead iodide under high pressure

https://phys.org/news/2023-05-scientists-semi-metallization-photoelectric-behavior-iodide.html "PbI2 decrease lifetime ultrafast spectroscopy under pressure... response band extended from visible light to telecom wavelength 1,550 nm... systematically investigate the behavior of PbI2 under high pressure, and they resolved a long-standing controversy about its high-pressure phase and identify inconsistencies between crystalline and electronic transitions... pressure-induced semi-metallization offers a new strategy for designing a high-performance photodetector with broadband response"

Dual-radical observation in a photoswitchable coordination polymer with synergy effect of semi-conductivity

https://phys.org/news/2023-05-dual-radical-photoswitchable-polymer-synergy-effect.html "photoisomerizable ligand synthesize 2 VT coordination polymers displaying VT and photoconversion behavior... Arrhenius analysis determined the origin of the semiconductive behavior before 330 K, while DFT calculations helped illustrate the mechanism of the unusual change in electrical conductivity during the VT transition process... dual-radical-based molecular anisotropy and charge-transfer-induced conductive anisotropy in photoswitchable coordination polymer" Related: What drives ions through polymer membranes? https://phys.org/news/2023-07-ions-polymer-membranes.html Tröger's base derived 3D-porous aromatic frameworks for near-unity selectivity of CO2 photoconversion https://phys.org/news/2023-09-trger-base-derived-3d-porous-aromatic.html

Team demonstrates quantum advantage on optimization problems with a 5,000-qubit programmable spin glass

https://phys.org/news/2023-05-team-quantum-advantage-optimization-problems.html "outperforms classical computing systems on optimization problems... boost connectivity and coherence D-Wave Advantage processor... coherent annealing regime with no thermal effects" Related: Research takes first steps towards realizing mechanical qubits https://phys.org/news/2023-06-mechanical-qubits.html Unveiling synchronization preferences of quantum thermal machines https://phys.org/news/2023-07-unveiling-synchronization-quantum-thermal-machines.html Optimizing continuous-variable functions with quantum annealing https://phys.org/news/2023-10-optimizing-continuous-variable-functions-quantum-annealing.html

New tool to guide efficient energy extraction from quantum sources

https://phys.org/news/2023-05-tool-efficient-energy-quantum-sources.html "measure of extractable energy from a source—named observational ergotropy... different sources may deemed the new ideal, replacing the previously optimal sources. We can anticipate that this measure can be used continuously across time and constitute the fundamental tool that we can use to judge potential quantum energy sources"

Superconductivity with Tc as high as 32K found in borides

https://phys.org/news/2023-05-superconductivity-tc-high-32k-borides.html "β-MoB2 transforms to α-MoB2 at 65 GPa possessing same crystal structure as MgB2... superconductivity of MoB2 with rather high Tc could also shed light on the exploration of high-Tc superconductivity in systems with light elements considering the synergic effects of light elements with high frequency phonon modes and strongly correlated electrons in transition metals" Related: Counterintuitive lithium compounds suggest route toward high-temperature superconductivity https://phys.org/news/2023-05-counterintuitive-lithium-compounds-route-high-temperature.html

Storing solar energy for three years and releasing it with virtually no loss

https://indianaeconomicdigest.net/Content/Default/All-The-News-Digest/Article/Valparaiso-University-researchers-believe-they-ve-made-a-breakthrough-in-solar-energy/-3/5310/114186 "mirror array concentrate sunlight onto metal oxide rotating sent into reactor turns 1,400°F... working on lowering cost" Related: Revolutionary Clean Energy Solution Promises to Transform Global Power Landscape https://www.airguide.info/revolutionary-clean-energy-solution-promises-to-transform-global-power-landscape/ Scientists Announce: 18-year Solar Energy Storage Now Possible Solar power is rapidly becoming a viable and sustainable energy source. https://goodmenproject.com/featured-content/scientists-announce-18-year-solar-energy-storage-now-possible-kpkn

Germanene: topological 2D germanium insulator switches between on and off states is comparable to transistors

https://phys.org/news/2023-05-material-paves-efficient-electronics.html "melted germanium with platinum... germanium atoms arranged honeycomb lattice on top... switch off applying electric field. This property is unique for a topological insulator. "The possibility to switch between 'on' and 'off' states adds an exciting application case for germanene," says Bampoulis. It paves the way for designing topological field-effect transistors. These transistors could replace traditional transistors in electronic devices. Resulting in electronics that no longer heat up"

New priming method improves battery life and efficiency

https://techxplore.com/news/2023-05-priming-method-battery-life-efficiency.html "scalable optimize prelithiation... mitigate lithium loss and improves battery life cycles... spray-coating anodes mixture particles and surfactant improves battery life 22% to 44%... higher stability and cycle life... improve energy density... replace graphite anodes with silicon ones... SEI break throughout cycles as reforms irreversibly depletes battery's lithium reserve... fewer lithium ions depleted when formed... instead of them clumping into different pockets within battery, uniformly distributed" Related: An electric vehicle battery for all seasons https://www.anl.gov/article/an-electric-vehicle-battery-for-all-seasons LGES to source graphite anode material from Novonix https://www.electrive.com/2023/06/07/lges-to-source-graphite-anode-material-from-novonix/ New carbon-stabilized Li-Si anodes for all-solid-state Li-ion batteries https://techxplore.com/news/2023-07-carbon-stabilized-li-

Researchers develop solution-processible single-crystal porous organic polymer

https://phys.org/news/2023-05-solution-processible-single-crystal-porous-polymer.html   "one-pot... excellent solubility and solution processability... dissolved PHOF-1 maintains consecutive 1D chain structure narrow molecular weight distribution regenerate reversibly in single-crystal or amorphous states depending on solvent evaporation rate... coated PHOF-1 onto a non-woven fabric to afford a functional composite textile capable of capturing NH3... single-crystal porous polymer materials with precise structural information, confined pore spaces, and straightforward solution processibility" Related: Chemists solve long-standing polymer science puzzle https://phys.org/news/2023-09-chemists-long-standing-polymer-science-puzzle.html

Forming and sensing optical emitters in real time

https://phys.org/news/2023-05-optical-emitters-real.html "single-atom, near-surface material defects form qubits... real-time measuring and characterizing optical emitters within nanoscale cavities... containing more photon energy than below-band-gap lasers... efficiently transfer energy laser stylus to material 'template... nanophotonic cavity devices out of commercial-grade silicon carbide... read-out immediate changes to cavity... 2 tools, together, are more powerful than either of them would be on their own... timing and strength of qubit outputs"

Study: No need for a leaky mode at the picometer level for microtapers

https://phys.org/news/2023-05-leaky-mode-picometer-microtapers.html "complex leaky modes speckles projected from curved microfiber taper tip determines input wavelength... solid packaging with complementary CMOS imaging sensor, single snapshot... low-cost use over long intervals maintaining accuracy and reliability... Multimode interferences generate random speckles... drawing conditions of taper maximize leaky modes generation within 1 mm... operate within 0.3-1 mm  ~1.5 pm resolution... low-cost, scalable spectrometer... 1 CIS chip to demonstrate hyperspectral imaging"

LightSolver laser-based computer on track to outperform quantum computers and supercomputers.

https://www.laserfocusworld.com/lasers-sources/article/14293603/qa-with-lightsolvers-ceo-ruti-benshlomi "small, low power requirements, room-temperature and scalable... converting mathematical representation into physical logic mapping into obstacles within optical path... laser beams converge into solution, measured and translated user's language... financial portfolio and trading optimization, real-time supply chain and logistics management, and complex material design... software-as-a-service (SaaS) available today... plan to offer access to the LPU via cloud mid-2024" Related: A physics-based Ising solver based on standard CMOS technology https://phys.org/news/2023-09-physics-based-ising-solver-based-standard.html

Carbon-based cathodes impact biofilm composition and performance in soil microbial fuel cells

https://techxplore.com/news/2023-05-carbon-based-cathodes-impact-biofilm-composition.html "SMFCs utilize endogenous microorganisms present in contaminated soil convert organic matter into electricity... carbon cloth, Pt-doped carbon cloth, graphite felt, and Fe-doped carbon nanofiber electrode... Fe-doped carbon nanofibers and Pt-doped carbon cloth cathodes stable peak power densities 25.5 and 30.4 mW m−2... Graphite felt cathodes best electrochemical performance but greatest instability... low-cost high-performing energy harvesting and bioremediation" Related: Carbon-based supports for electrocatalysis under industrially relevant conditions https://phys.org/news/2024-03-carbon-based-electrocatalysis-industrially-relevant.html

Researchers discover superconductive images are actually 3D and disorder-driven fractals

https://phys.org/news/2023-05-superconductive-images-3d-disorder-driven-fractals.html "superconductor Bi2-xPbzSr2-yLayCuO6+x (BSCO)... extends theory of second order phase transitions to electronic fractals in quantum materials... vanadium dioxide (VO2) and neodymium nickelates (NdNiO3)... electricity transmission, cooling devices, MRIs, and levitating trains" Related: Chinese scientists develop cutting-edge tech for 3D ceramic printing in the air to create complex engineering parts https://www.scmp.com/news/china/science/article/3220513/chinese-scientists-develop-cutting-edge-tech-3d-ceramic-printing-air-create-complex-engineering A foundation that fits just right gives superconducting nickelates a boost https://www6.slac.stanford.edu/news/2023-07-12-foundation-fits-just-right-gives-superconducting-nickelates-boost 'Flawed' material resolves superconductor conundrum https://phys.org/news/2024-02-flawed-material-superconductor-conundrum.html

Carbon nanotube membranes with Pd-Cu modification successfully reduce nitrate levels via electrocatalysis

https://phys.org/news/2023-05-carbon-nanotube-membranes-pd-cu-modification.html   "no chemicals needed, no sludgs produced, and convenient... electrodeposition, flowthrough electrochemical reactor... overcome mass transfer problem... Nitrate reduced 99 %) membrane potentials <−1.2 V... nitrate removal efficiency 56.2 %, and N2 selectivity 23.8 % for Pd: Cu=1:1 membrane operated −0.8 V... enhanced under acidic conditions, N2 selectivity decreased...  concentration Cl− ions and dissolved oxygen little effect on nitrate reduction... mass transfer rate constant improved 6.6X" Related: Photocatalytic technology improved with TiO2 nanotube arrays and nanobubbles https://phys.org/news/2023-05-photocatalytic-technology-tio2-nanotube-arrays.html Novel sustainable electrochemical method converts carbon dioxide into carbonaceous materials https://www.eurekalert.org/news-releases/989089

NASA, partners achieve fastest space-to-ground laser communication link

https://techxplore.com/news/2023-05-nasa-partners-fastest-space-to-ground-laser.html "200 Gbps optical link between satellite in orbit and Earth... TeraByte InfraRed Delivery (TBIRD)... tissue box size"

Harnessing machine learning to make nanosystems more energy efficient

https://phys.org/news/2023-05-harnessing-machine-nanosystems-energy-efficient.html "heat engine... simulate flipping nanomagnetic bit between 0 and 1... computer that cools down as it runs, with the heat being sent somewhere else in your data center... Whitelam said the simulations are like a testbed for understanding concepts and ideas. "And here the idea is just showing that you can perform these protocols, either with little energy expense, or energy sucked in at the cost of going somewhere else, using measurements that could apply in a real-life experiment... data centers" Related: Physicists achieve breakthrough in Monte Carlo computer simulations https://phys.org/news/2023-07-physicists-breakthrough-monte-carlo-simulations.html Exploiting nonlinear scattering medium for optical encryption, computation and machine learning https://phys.org/news/2023-08-exploiting-nonlinear-medium-optical-encryption.html

New surface coating technology increases materials' electron emission seven-fold

https://phys.org/news/2023-05-surface-coating-technology-materials-electron.html "high-efficiency electron sources, electron microscopes, electron beam lithography and synchrotron radiation facilities...  thermally stable high melting point and robust hexagonal boron nitride... coating LaB6 with hBN lowered the work function from 2.2 eV to 1.9 eV and increased electron emission... lower work function compared to non-coated and graphene coated regions"

Jellybeans: A sweet solution for overcrowded circuitry in quantum computer chips

https://phys.org/news/2023-05-jellybeans-sweet-solution-overcrowded-circuitry.html "elongated quantum dots between qubit pairs creating more wiring space without interrupting interaction among paired qubits silicon... 2-qubit gates..chain of electrons trapping more electrons in between qubits... 2 paired qubit electrons at each end of the jellybean can continue to talk to another. Only the electrons at each end are involved in any computations, while the electrons in the jellybean dot are there to keep them interacting while spread apart... number extra electrons pulled into quantum dot is arrangement key" Related: Chessboard-like method enables the operation of largest gate-defined quantum dot system https://phys.org/news/2023-08-chessboard-like-method-enables-largest-gate-defined.html

Milk reaction inspires new way to make highly conductive gel films

https://phys.org/news/2023-05-reaction-highly-gel.html "dipping sustainable biomass (cellulose, chitosan, silk fibroin, guar gum) solvent molecules arrange themselves thin films at edge easily removed tweezers...  inspired heated milk-skin effect... polymer network surrounded by ionic liquid similar to hydrogel... highly conductive and very sensitive... sensors, electrolyte in solid-state batteries, robotics, wearable electronics, smart robotics and artificial intelligence"

Small but mighty: Insect-inspired microphones

https://techxplore.com/news/2023-05-small-mighty-insect-inspired-microphones.html "3D printed, detect a specific signal. This streamlined process is similar to how nerve endings detect and transmit signals. The specialization of the sensor enables it to quickly discern triggers without consuming a lot of energy or requiring supervision.... small, autonomous, low energy... ideal for applications that are hazardous or hard to reach, including locations embedded structure or within humans... blood-brain barrier organoids or ultrasound structural monitoring" Related: Insect wings could inspire new self-cleaning technologies https://phys.org/news/2023-06-insect-wings-self-cleaning-technologies.html

Hyme Energy partnering with Semco MaritimeStoring to store renewables with molten hydroxide salts

https://www.pv-magazine.com/2023/05/10/storing-renewables-with-molten-hydroxide-salts/ "1.6 MWh storage in GWh range... 700 C up to 2 weeks... 2 tank concentrated solar power... efficiency industrial heat 90%, co-generation 80 to 90%, power generation alone 40%... scalable 100,000 households 10 hours... sodium hydroxide from seawater and byproduct of chlorine production 6X cheaper... flywheel and recycled lithium-ion batteries" Related: Could “Falling Particles” Help Us Drop Carbon To Net Zero https://www.publicnow.com/view/893C507DC0896A12B2B9A676BECB8FF1C3B890D6?1697075202 Australia made a breakthrough in using mirrors to generate solar power https://interestingengineering.com/innovation/australia-made-a-breakthrough-in-using-mirrors-to-generate-solar-power

Magnetic tunnel junction device with highest tunnel magnetoresistance developed through precision interfacial control

https://phys.org/news/2023-05-magnetic-tunnel-junction-device-highest.html "tunnel magnetoresistance ratio (TMR) 631% room temperature...  magnetic tunnel junction (MTJ) peak-to-valley (PV) difference of 141%... increase sensitivity of magnetic sensors and capacity of magnetoresistive random access memory (MRAM)... ultrasensitive magnetic sensors for medical use and very large capacity MRAM"

Polychromatic full-polarization control in mid-infrared light

https://phys.org/news/2023-05-polychromatic-full-polarization-mid-infrared.html "dispersive Jones matrix wavelength-decoupled coherent pixels all-silicon metasurface without spatial or time costs and crosstalk enables independent phase manipulations... Metasurfaces enable nanoscale light control manipulating multiple photon wavelength, polarization, and phase... particle swarm-genetic algorithm achieving arbitrary polarization modulation multiple wavelengths... works multiple wavelengths... ultra-compact and integrated"

Computer vision technique leverages reflections to image the world

https://techxplore.com/news/2023-05-vision-technique-leverages-image-world.html "turn glossy objects into cameras... images object taken different angles converts surface into virtual sensor captures reflections... AI estimate depth... see around corners or beyond objects that block view... autonomous vehicles...  Objects as Radiance-Field Cameras (ORCa)... virtual pixels on object's surface model 3D POV object" Related: Researchers extend non-line-of-sight imaging towards longer wavelengths https://phys.org/news/2023-11-non-line-of-sight-imaging-longer-wavelengths.html Innovations in depth from focus/defocus pave the way to more capable computer vision systems https://techxplore.com/news/2024-02-depth-focusdefocus-pave-capable-vision.html

World's first mass production of metalenses for visible wavelengths

https://techxplore.com/news/2023-05-world-mass-production-metalenses-visible.html "Photolithography uses light to pattern substrate, and nanoimprint lithography, and stamp nano-sized patterns  onto substrate... deep-ultraviolet ArF photolithography to create 12-inch master stamp... metalenses 1 cm diameter at high speed... 90% efficiency coating lens with 20 nm layer titanium dioxide... lightweight virtual reality (VR) devices capable of displaying images in red, green, and blue" Related: Enhancing image quality with broadband achromatic and polarization-insensitive metalenses https://phys.org/news/2023-07-image-quality-broadband-achromatic-polarization-insensitive.html

Breakthrough in dynamical localization transitions and Berry curvature-induced transport

https://phys.org/news/2023-05-breakthrough-dynamical-localization-transitions-berry.html "wave chaos deformed optical microcavities coupled to crystalline momentum in periodic cavity array: scar-momentum locking... crossover between Rayleigh and Mie regimes... quantum information and communication, as well as the development of new optoelectronic devices, this breakthrough could provide the way for future technological advancements... crystal momentum-induced dynamical tunneling"

Engineering self-integrated atomic quantum wires to form nano-networks

https://phys.org/news/2023-05-self-integrated-atomic-quantum-wires-nano-networks.html "atomic-scale wires shape of nano-rings, stripes and X-/Y- junctions using pulsed-laser-deposition... single crystalline, atomic-scale wires Mott insulator maintained bandgap comparable to wide-gap semiconductors... thickness and width <10 ns... melted ruthenium trichloride on highly oriented pyrolytic graphite using pulsed-laser-deposition and observed outcome scanning tunneling microscopy.... open energy gap at Fermi energy... non-equilibrium reaction-diffusion... stripe patterns via Turing instability"

Sustainable and more efficient method for sound absorption and thermal insulation

https://phys.org/news/2023-05-sustainable-efficient-method-absorption-thermal.html "pectin converted into freeze-dried porous outperform commercial sound absorption such as glass and wool... pores various dimensions and scales... waste streams that are already being produced... local K-market for waste exchange and a chance to collect the orange peels from their juice pressing machine"

Researchers detect and classify multiple objects without images

https://phys.org/news/2023-05-multiple-images.html "single-pixel detector, efficient and robust multi-object detection directly from few 2D measurements... heavy communication load, high computing overhead and low perception rate existing visual perception systems including driving... single-pixel object detection (SPOD) object detection accuracy 80%... transformer-based encoder extract high-dimensional features fed into  multi-scale attention network-based decoder outputs class, location and size... sampling rate 5% spatial light modulation 0.016 seconds"

Solar cells inspire Li-ion batteries

https://techxplore.com/news/2023-05-solar-cells-li-ion-batteries.html "iron oxide nanorods simultaneously harvest visible solar and store Li-ions efficiently... >90% enhanced specific battery capacity... Hematite absorb sun, PCBM and carbon nanotubes conductive additives provide photogenerated electrons to reach current collector and initiate photocharging... modified 2032 coin cell casing 8 mm diameter hole punched on bottom optical window couple light sealed with transparent PVC sheet... photoconversion and storage efficiency (PCSE) of 1.988%" Related: Increased efficiency for solar cells with depth-based property analysis https://techxplore.com/news/2023-05-efficiency-solar-cells-depth-based-property.html Utilizing electron spin for faster charging, higher capacity batteries https://techxplore.com/news/2023-06-electron-faster-higher-capacity-batteries.html New research unveils the future of energy-efficient power delivery https://techxplore.com/news/2023-07-unveils-futu

Light amplification by stimulated emission from electrically driven colloidal quantum dots finally achieved

https://phys.org/news/2023-05-amplification-emission-electrically-driven-colloidal.html "solution-cast semiconductor nanocrystals... electrically pumped lasing devices prepared on any crystalline or non-crystalline substrate without sophisticated vacuum-based growth techniques or clean-room... long optical gain lifetimes, large gain coefficients and low lasing thresholds... integrating photonic and electronic circuits...current densities of up to approximately 2,000 amperes per square centimeter... lighting, displays, quantum information, medical diagnostics and chemical sensing" Related: Symmetric graphene quantum dots for future qubits https://phys.org/news/2023-05-symmetric-graphene-quantum-dots-future.html photoconversion and storage efficiency (PCSE) of 1.988% https://phys.org/news/2023-05-crystal-based-photonic-metamaterial.html

Breakthrough smart material can change shape and color in response to heat and electricity

https://thedebrief.org/breakthrough-smart-material-can-change-shape-and-color-in-response-to-multiple-stimuli/ "fabric combines soft engineered composites and hard stainless steel... polymer nano-composite fibers from recycled plastic... energy efficient... camouflage, biomedical devices, environmental sensors, AI, robotics, clothing warms up as you move, vehicle bumpers return to original shape after accident, feeling warmth or physical trigger in virtual reality" Related: Clothing manufacturers aim to get fashionable with greener practices https://techxplore.com/news/2023-08-aim-fashionable-greener.html Multimodal graphene-based e-textiles for the realization of customized e-textiles developed for the first time https://phys.org/news/2023-10-multimodal-graphene-based-e-textiles-customized.html Shape-shifting fiber can produce morphing fabrics https://techxplore.com/news/2023-10-shape-shifting-fiber-morphing-fabrics.html

Self-folding origami machines powered by chemical reaction

https://news.cornell.edu/stories/2023/05/self-folding-origami-machines-powered-chemical-reaction "actuates 600 ms per cycle, 20°C, faster... direct chemical to mechanical transduction... ultrathin platinum sheets capped with titanium... electronic structure calculations dissect reaction hydrogen adsorbed to material exposed to oxygen... deform and bend... work in gaseous environments... autonomous chemical system that regulates flows based on chemical composition"

Beyond Moore's Law: Innovations in solid-state physics include ultra-thin 2D materials and more

https://phys.org/news/2023-05-law-solid-state-physics-ultra-thin-2d.html "low voltage low leakage, scalable, spin-based field-effect transistor... wave-function penetration electrons tunnel through thin electrical barrier instead of over it, lower voltage, consuming less power and heat. TFETs made with 2D materials  perform better because of thinner and more controllable electronic tunneling barrier, which both enhances electron flow and allows the device to perform with greater precision... high performance" Related: 2D metal contacts stop transistor leakage currents in their tracks https://techxplore.com/news/2023-07-2d-metal-contacts-transistor-leakage.html Scientists working to make tiny, powerful microelectronics even smaller, more energy efficient https://news.uchicago.edu/story/scientists-working-make-tiny-powerful-microelectronics-even-smaller-more-energy-efficient

Protecting high-performance, superconducting magnets

https://phys.org/news/2023-04-high-performance-superconducting-magnets.html "barium copper oxide... high-temperature superconductor), high critical field, and the potential to form demountable magnets... voltage or temperature measurements to trigger energy extraction processes... array probes measure magnetic fields, Toroidal field coils, particle accelerators and colliders for high-energy and nuclear physics, diagnostic and therapeutic medical devices, energy generation, transmission, and storage technologies" Related: Researchers 'grow' high quality superconductor, find resilience against magnetic fields https://phys.org/news/2023-07-high-quality-superconductor-resilience-magnetic.html

Mechanisms of ultra-fast gigahertz burst femtosecond laser ablation

https://phys.org/news/2023-03-mechanisms-ultra-fast-gigahertz-femtosecond-laser.html "molten liquid removal while halting material removal after burst irradiation... atmospheric pressure... improved efficiency... material vaporization at center, and liquid ejection form molten pool edge via fast, radially outward fluid motion, recoil pressure exerted by vaporization... scattering images released timescale later than 300s, irradiation spot cooled down to inhibit materials removal... GHz bursts 50–200 pulses via multimodal probing...  laser processing, machining, printing and spectroscopic diagnostics"

Researchers observe extremely squeezed directional THz waves in thin semiconductor crystals

https://phys.org/news/2023-05-extremely-thz-thin-semiconductor-crystals.html "THz waves propagate plasmon polaritons along thin anisotropic semiconductor platelets wavelengths reduced 65X... polaritons propagate with wavelengths 100X shorter than corresponding photon wavelength allowing manipulation of light on smaller scale... first real-space images of THz plasmon polaritons 65X reduced... acoustic plasmon polaritons formed... anisotropy polariton propagation"

Breakthrough in enhancement of hole mobility in strained germanium leads to emergence of new class of quantum materials

https://techxplore.com/news/2023-05-breakthrough-hole-mobility-strained-germanium.html "record mobility holes, 4.3 million cm2V-1s-1... 4X increase mobility... 2X best mobility of electrons state of art strained silicon... low-temperature electronics with reduced Joule heating based on spin qubits, including Majorana Fermions... superior monocrystalline, low density background impurities... reduces gap between best hole mobility gallium arsenide heterostructures grown on... computers, mobile phones, gadgets, home appliances, cars, optoelectronics, sensors, laterally gated quantum devices" Related: Sensing and controlling microscopic spin density in materials https://phys.org/news/2023-08-microscopic-density-materials.html

A highly performing device for polariton-based coherent microwave emission and amplification

https://phys.org/news/2023-05-highly-device-polariton-based-coherent-microwave.html "light–matter coupled cavity magnon polaritons at room temperature...  stability and controllability hybrid light–matter coupled... new type polariton, gain-driven polariton stable phase enables coherent emission of microwave photons... outperform STOs and solid-state masers... 1 bnX more powerful and emission quality factor... microwave sources that can be integrated on-chip... frequency tunable... controllability light-matter interaction...  wireless communication systems and quantum computers" Related: Hybrid exciton–polariton particles surprise with negative mass https://phys.org/news/2023-05-hybrid-excitonpolariton-particles-negative-mass.html Breaking symmetry to excite polaritons https://phys.org/news/2023-06-symmetry-polaritons.html

Nanoscale laser isolator could revolutionize photonics devices

https://www.laserfocusworld.com/lasers-sources/article/14293154/nanoscale-laser-isolator-could-revolutionize-photonics-devices "CMOS, narrow linewidth, nonmagnetic, no other external parts... fully passive and require no power... Ring resonators optical nonlinearity allows incoming laser build power, circulating clockwis strengthening via resonance transmits near-unity power... prevents back-reflected light from resonating and transmitting... Cascading 2 isolators on same chip isolation ratio 35 dB insertion loss 5 dB...  turnkey frequency combs to TB communications, on-chip optical amplifiers, and quantum computing systems” Related: Ultrashort light pulses shaped like a spring toy bring a new twist to photonics https://phys.org/news/2023-06-ultrashort-pulses-toy-photonics.html Researchers develop new electrically pumped edge-emitting laser chip with unprecedented performance https://phys.org/news/2023-06-electrically-edge-emitting-laser-chip-unprecedented.html Engineers develop f

Enhancing thermoelectricity with guided impurity position control

https://phys.org/news/2023-05-thermoelectricity-impurity-position.html "IDT-based polymer improved thermoelectric performance... impurity position controlling within acetal-functionalized IDT... synthesized Lewis-acid base... nitrosyl hexafluorophosphate directed dopant benzylic position... non-polar side chains... impedes charge transfer... improved doping efficiency, condensed Ï€−Ï€ stacking, reduced grain size, low thermal conductivity 0.09 W m−1 K−1, 30X higher electronic conductivity, 6X thermoelectric performance... low thermal conductivity high electronic conductivity" Related:   Scientists improve thermoelectric performance of n-type transition metal selenide through nanoinclusions https://phys.org/news/2023-05-scientists-thermoelectric-n-type-transition-metal.html Team develops novel ligands for transition-metal catalysis of photoreactions https://phys.org/news/2023-09-team-ligands-transition-metal-catalysis-photoreactions.html

Experiment demonstrates continuously operating optical fiber made of thin air

https://phys.org/news/2023-05-optical-fiber-thin-air.html "auxiliary ultrashort laser pulses sculpt fiber optic 50m waveguides in air tens of ms... ring high-intensity light structures heat air extended ring low-density heated air surrounding central undisturbed structure optical fiber... unspooled and directed at light speed in any direction... increasing repetition waveguide-generating pulse up to 1000 Hz air waveguide continuously maintained heating and deepening waveguide faster than surrounding air can cool it... efficiency improves 3X at highest repetition rate" Related: Team manages to dynamically control trions with a waveguide https://phys.org/news/2023-05-team-dynamically-trions-waveguide.html

Quantum entanglement of photons doubles microscope resolution

https://phys.org/news/2023-05-quantum-entanglement-photons-microscope-resolution.html "biphotons carry lower energy of longer-wavelength photons while having shorter wavelength higher-energy photons... 400-nm light image thcell and achieve effect of 200-nm light, cells will be unharmed , and resolution of UV... shines laser light into crystal that converts photons passing through into biphotons... mirrors, lenses, and prisms, each biphoton split, shuttled along two paths, 1 paired photons passes through object being imaged... computer builds image of the cell based on signal photon" Related: Ultralow temperature terahertz microscope capabilities could enable better quantum technology https://phys.org/news/2023-05-ultralow-temperature-terahertz-microscope-capabilities.html High-throughput terahertz imaging: Progress and challenges https://phys.org/news/2023-10-high-throughput-terahertz-imaging.html

Lacy glass shells of diatom algae inspire new technology

https://phys.org/news/2023-05-lacy-glass-shells-diatom-algae.html "high-performance low power miniature microphones, ultrafast, energy-saving photonic crystals for light signal processing, microelectromechanical systems and photonic integrated circuits... hardness, flexibility, and vibrational characteristics,''  interrogated algae 30 to 40 μm diameter... characteristics of living diatom cells and cleaned frustules without organic"

Quantum breakthrough could revolutionise computing

https://www.bbc.com/news/science-environment-64492456 "transferred quantum information between computer chips at record speeds and accuracy... design systems and engines, drugs, forecast weather" Related: A blueprint for a quantum computer in reverse gear https://phys.org/news/2023-05-blueprint-quantum-reverse-gear.html

Photonic sensor technology inches towards consumer applications

 https://www.laserfocusworld.com/test-measurement/article/14292924/photonic-sensor-technology-inches-towards-consumer-applications "cheaper, more efficient and portable... being used by three of the top 10 global beverage companies... high-performance detectors selective near-IR combined with AI, trained for classification and quantification... no moving elements... resonant-cavity enhanced photodetectors, each with distinct spectral response 850–1700 nm high signal-to-noise ratio, high prediction accuracies... measure properties instantly instead of weeks, at incoming raw material, during real-time analysis, and after production"

Magnetic imaging unlocks crucial property of 2D superconductor

https://phys.org/news/2023-05-magnetic-imaging-crucial-property-2d.html "superconducting quantum interference device, SQUID,, low temperatures small magnetic fields... molybdenum disulfide, a van der Waal... spin coating SQUID with micron-thick layer ionic liquid positioning close to fragile sample without damaging... expelling magnetic field... spin coating their SQUID with a micron-thick layer of ionic liquid and positioning it as close as possible to the fragile sample without damaging it... revealed material expelling the device's magnetic field" Related: Physicists discover 'stacked pancakes of liquid magnetism' https://phys.org/news/2023-05-physicists-stacked-pancakes-liquid-magnetism.html Magnetic guidewire steering at ultrahigh magnetic fields for medical imaging https://medicalxpress.com/news/2023-05-magnetic-guidewire-ultrahigh-fields-medical.html

Engineering graphene-based quantum circuits with atomic precision

https://phys.org/news/2023-05-graphene-based-quantum-circuits-atomic-precision.html "synthesizing new carbon-based materials with tunable properties... connecting nano ribbon flexible bridges phenylene moieties...  modifying architecture and angle bridges... control the quantum connectivity between the nanoribbon channels and, ultimately, fine-tune the electronic properties of the graphene nanoarchitecture. The tunability could also be controlled by external stimuli, such as strain or electric fields thermoelectric nanomaterials, renewable energy generation and waste heat recovery" Related: Researchers use ribbons of graphene to push the material's potential https://phys.org/news/2023-08-visualize-catalyst.html

AI-designed unidirectional imagers

https://techxplore.com/news/2023-05-ai-designed-unidirectional-imagers.html "smaller than light... series of transmissive optical layers through the spatial engineering of materials using deep learning... independent of light polarization and works under any light oscillation orientation... function like switchboard... any part of electromagnetic spectrum using different transmissive materials or substrates... few tens of wavelengths thickness... security, defense and telecommunications"

Lithography-free photonic chip offers speed and accuracy for artificial intelligence

https://phys.org/news/2023-05-lithography-free-photonic-chip-accuracy-artificial.html "spatially distributed optical gain and loss. Lasers cast light directly on a semiconductor wafer, without the need for defined lithographic pathways... without lithography adaptable, patterns not pre-defined and etched in intrinsically defect free... build and use quickly, integrate, reprogram laser patterns on the fly to achieve real-time reconfigurable computing for on-chip training AI network" Related: China plans giant particle accelerator-powered chip factory https://interestingengineering.com/innovation/china-giant-particle-accelerator-microchips Research team develops reconfigurable photonic computing architecture for lifelong learning https://techxplore.com/news/2024-04-team-reconfigurable-photonic-architecture-lifelong.html