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Showing posts from September, 2023

Low loss Mie scatterer shown to enhance Q and chirality control in silicon microring

https://phys.org/news/2023-09-loss-mie-shown-chirality-silicon.html "lithographically-defined asymmetric and symmetric Mie-scatterers enables subwavelength control of wave transmission and reflections without deflecting to additional radiation channels... enables pre-defined chiral light propagation and backscattering-free resonances needed for frequency combs, solitons, sensing, and other nonlinear optical processes such as photon blockade, and regenerative oscillators... enhanced empirical quality factor extracted from the transmission spectra is demonstrated for the first time" Related: Chiral AuCu heterostructures with site-specific geometric control and tailored plasmonic chirality https://phys.org/news/2023-10-chiral-aucu-heterostructures-site-specific-geometric.html New approach overcomes long-standing limitations in optics to enhance the efficiency of Mie scattering https://phys.org/news/2023-12-approach-long-standing-limitations-optics-efficiency.html

Striking rare gold: Researchers unveil new material infused with gold in an exotic chemical state

https://phys.org/news/2023-09-rare-gold-unveil-material-infused.html "gold that has lost 2 negatively charged electrons, denoted Au2+... halide perovskite, quick, simple, room temperature... applications that require magnetism and conductivity as electrons hop from Au2+ to Au3+ in the perovskite: more-efficient solar cells, light sources, and electronics components"

Natural evolutionary strategy optimizes parametric quantum circuits, a critical component of variational quantum algorithms

https://phys.org/news/2023-09-natural-evolutionary-strategy-boosts-quantum.html "combines gradient-free natural evolutionary strategy with gradient descent to overcome barren plateau... optimize quantum circuits in terms of the number of function evaluations and circuit size scaling... NESSGD combines natural evolutionary strategy with stochastic gradient descent, NESAdaBelief combines natural evolutionary strategy with a gradient descent variant... parameter shift rule paves way for practical applications on quantum hardware"

Replacing tape used to make lithium-ion batteries could slow battery degradation and reduce self-discharge

https://techxplore.com/news/2023-09-tape-lithium-ion-batteries-battery-degradation.html "polypropylene (PP) tape worked as well as PET tape in lithium-ion batteries, does not depolymerize and costs about the same... PP tape instead of PET tape made lithium-ion batteries last approximately 10% longer. They also found that using PP tape reduced self-discharge by approximately 70%. In the real world, that would mean phones would lose little of their charge when inactive for long periods of time... smartphones and other personal devices" Related: Low-temperature synthesis of lithium ceramic for batteries https://techxplore.com/news/2023-10-low-temperature-synthesis-lithium-ceramic-batteries.html Neutrons offer insights into developing long-range batteries for electric vehicles https://techxplore.com/news/2023-10-neutrons-insights-long-range-batteries-electric.html No sintering required: low-temperature synthesis of lithium ceramic for batteries https://onlinelibrary.wiley.com/pag

Dynamic BLOB adjustment gives cloud computing a 96% efficiency boost

https://techxplore.com/news/2023-09-dynamic-blob-adjustment-cloud-efficiency.html "adaptive approach to size of data chunks tailored dynamically based on real-time metrics: available bandwidth, storage usage, BLOB size, and data access frequency... 24% improved execution times and 96% improvement over random chunk-size methods... might also be used with other data management systems. They are planning to test their approach with real-world cloud computing platforms, such as BlobSeer and Hadoop Distributed File System (HDFS)... 

Orbital currents can go far—a promising novel ultrafast channel for data processing

https://phys.org/news/2023-09-orbital-currents-fara-ultrafast-channel.html "information stored in THz orbital degrees of freedom prevails 100X longer than information stored in electron's spin degree of freedom... orbital angular momentum currents in tungsten travel at low speeds but reach very far... Hall-like and Rashba–Edelstein-like conversion processes based on their different dynamics... Ni good orbital angular momentum source, whereas W is a good orbital-to-charge converter... could enable ultrafast and low-dissipation data processing, a long-standing goal for future technology"

Turning mine waste into healthy soil

https://phys.org/news/2023-09-healthy-soil.html "save billions of dollars... microbes eat organics and minerals in tailings, transforming them into functional aggregates that develop porosity in compacted tailings allows gas, water, roots, and microbes to survive... occur in 12 months... restore soils damaged by over-farming, overuse of fertilizers, and climate change... reduce costs and risks from mining activities, environmental contamination, and even the amount of fertilizer needed by farmers" Related: Electrochemistry helps clean up electronic waste recycling, precious metal mining https://techxplore.com/news/2024-03-electrochemistry-electronic-recycling-precious-metal.html

Fabricating fused silica optics with a high laser-induced damage threshold

https://phys.org/news/2023-09-fabricating-fused-silica-optics-high.html "damage-resistant fused silica optics for high-energy laser applications, higher LIDTs... Residual processing defects significantly reduce the LIDT of fused silica optics, which seriously limits their performance and lifetime in high-energy laser applications. Conventional processing methods have focused on effectively managing subsurface mechanical damage (SSD) during grinding, but this is not always successful... CO2 laser ablate optic's surface layer-by-layer for SSD and surface/subsurface contamination removal"

Improvement of ultra-broadband photodetection with a device based on twisted double bilayer graphene

https://phys.org/news/2023-09-ultra-broadband-photodetection-device-based-bilayer.html "2 bilayer graphene stacks twisted 15° create electric field without extra electrodes enabling scalable broadband detection detecting light from 3 to 150 THz... internal quantum efficiency >40%, enhanced photoconductivity by interlayer screening, and scalability of TDBG because no gates needed to apply electric field in order to get bandgap... long-wavelength capabilities down to 2 THz... autonomous driving, environmental monitoring, health care, space exploration, agriculture and food processing"

Indian research team develops fully indigenous gallium nitride power switch

https://techxplore.com/news/2023-09-indian-team-fully-indigenous-gallium.html "GaN transistor metal organic chemical vapor deposition layer by layer on 2-inch silicon wafer... combined GaN and silicon transistor to keep device normally off... switching time 50 ns... scale up dimensions so can operate high currents, step up or step down voltages... EV. phone and laptop power converters, wireless communications, space and military applications (radar)"

Progress in upscaling Si spin and superconducting-based quantum technologies

https://phys.org/news/2023-09-upscaling-si-superconducting-based-quantum-technologies.html "scalable instrumentation to interface with the growing number of noise-sensitive superconducting qubits... CMOS-based cryo-electronics hold RF (de-) multiplexing elements operating at base temperature of dilution refrigerator alleviating I/O bottleneck as number of wires going from room to mK temperatures significantly reduced... record low temperature 10mK... low noise and power dissipation, interfaced with high-coherence superconducting qubits to perform qubit control with single qubit gate fidelities >99.9%"

A new kind of chip for quantum technology

https://phys.org/news/2023-09-kind-chip-quantum-technology.html "silicon photonic coupled cavity array quantum simulator constructed to solve 1 specific purpose equation model... scalable, measurable, programmable... pseudo-atomic lattice of 8 photonic resonators... photons confined, raised and lowered in energy, and moved around in controlled manner forming circuits... algorithm characterizes chip in detail, using only information available on chip's boundaries, and designing architecture for heating and independently controlling each cavity in array leading to device prrogramming" Related: Researchers advance effort to turn diamonds into a quantum simulator https://phys.org/news/2023-10-advance-effort-diamonds-quantum-simulator.html

Study unveils new solid electrolyte with cheap, eco-friendly materials

https://techxplore.com/news/2023-09-unveils-solid-electrolyte-cheap-eco-friendly.html "manganese-based Prussian Blue analogs enhance ionic conductivity, with different transition metals influencing ion channel size affecting conductivity... sodium ion room temperature conductivity 0.1 mS/cm... expanding research possibilities beyond existing sulfide, oxide, and halide-based solid electrolytes" Related: New materials discovered for safe, high-performance solid-state lithium-ion batteries https://techxplore.com/news/2024-04-materials-safe-high-solid-state.html#google_vignette Inlyte Energy reels in $8M seed round to revive a 50-year-old battery technology https://techcrunch.com/2023/10/26/inlyte-energy-seed-round/?guccounter=1 Battery breakthrough could eliminate range anxiety for electric vehicles https://www.independent.co.uk/tech/batteries-solid-state-range-anxiety-electric-vehicles-b2527102.html

Organic dyes accelerate transport of buffered solar energy for significantly more efficient solar cells

https://techxplore.com/news/2023-09-dyes-buffered-solar-energy-significantly.html   "organic dyes create exciton transport highways... faster and more targeted transport, higher energy yield and solar cell efficiency... quinoid merocyanines (organic dyes) excellent ability to absorb visible light... 1.33 electron volts delivered by our design is far above the values found in organic semiconductors—you could say the organic dye molecules form a kind of super-highway... can be rolled up, use on smart devices" Related: A multilayered design strategy for high-efficiency thin crystalline silicon solar cells https://techxplore.com/news/2023-09-multilayered-strategy-high-efficiency-thin-crystalline.html Breakthrough in Solar Technology: Cell Achieves 36.1% Efficiency https://www.constructionworld.in/energy-infrastructure/power-and-renewable-energy/breakthrough-in-solar-technology-cell-achieves-36.1-efficiency/44945 Toward high-efficiency thin crystalline silicon solar cells https://

Making a femtosecond laser out of glass

https://phys.org/news/2023-09-femtosecond-laser-glass.html "1 mirror sits in groove with micromechanical flexures stir mirror when exposed to fs laser light, laser is used 2nd time to align mirrors and create stable, small scale fs laser... extreme alignment resolutions, down to sub-nm... kW peak power and emitting pulses <200 fs... laser eye surgery, non-linear microscopy, spectroscopy, laser material processing and sustainable data storage"

Delrin introduces breakthrough new resin for high-performance plastic gears

https://www.prnewswire.com/news-releases/delrin-introduces-breakthrough-new-resin-for-high-performance-plastic-gears-301925452.html "high molecular weight nucleated resin... high creep resistance and fatigue durability... cheaper, lighter and quieter than metal... 10% greater strength and 2X durability... EVs, e-bikes"

New qubit circuit enables quantum operations with higher accuracy

https://phys.org/news/2023-09-qubit-circuit-enables-quantum-higher.html "superconducting fluxonium qubit with longer lifespan (coherence times >1 ms., 10X longer) operates between qubits with greater accuracy: fluxonium fundamentally better qubit than transmon, coupling element between 2 fluxonium qubits (with tunable transmon coupler in middle enabling stronger coupling) enables them to perform highly accurate logical gate operations (fidelity 99.9%), suppressing background interactions causing quantum operation errors... flexible parameter selection enables scaling up"

Side Eye gets audio from still images and silent videos

https://techxplore.com/news/2023-09-audio-images-silent-videos.html "can determine gender and exact words of someone speaking in room where photo was taken even if they were off-camera... voice near camera lens causes tiny vibrations bending light... smart phone photographic method makes it easier, scanning 1 row of pixels at a time hundreds of thousands times in single photo. So amplifies > thousand times amount of frequency information, audio granularity... As long as there is even a little bit of light, even photo pointed at ceiling... trained with machine learning... cybersecurity" Comment by Simon Derricutt at Revolution-Green: It's helped along by the fact that Apple phones no longer actually take photographs as a single image, but as a short video sequence of multiple photos. Allows you to select the frame that's best, for example where people aren't blinking. If you read the description carefully, though, the claim of "determine gender and exact w

How to make color-changing transformers with polymers

https://phys.org/news/2023-09-color-changing-polymers.html "liquid crystal elastomer color changes and shape morphing responding to temperature, mechanical deformation through stretching, and illumination... cholesteric LCE coatings with structural color patterns, pigment not added... placing another soft polymer carrier layer on top stretched, change from orange to blue, reflects near-IR when unstretched... mechanochromic stickers detect substrate deformation, human-computer interaction, strain sensors in smart textiles, soft robotics, responsive jewelry and art" Related: Inspired by butterfly wings, researchers develop a soft, color-changing system for optical devices https://phys.org/news/2023-09-butterfly-wings-soft-color-changing-optical.html Paint that can change colors? The skin of an octopus holds the key, researchers say https://phys.org/news/2023-10-skin-octopus-key.html Developing a futuristic elastomer with ultrahigh strain-induced crystallization https://phys.org

All-fiber ellipsometer for nanoscale dielectric coatings

https://phys.org/news/2023-09-all-fiber-ellipsometer-nanoscale-dielectric-coatings.html "measuring thickness and refractive index of thin films deposited on optical fibers, based on wavelength shifts of multiple cladding mode resonances in tilted fiber Bragg gratings... simultaneous wavelength tracking large set of resonances enables multiple parameter determinations... TFBG values (n = 2.25, 185 nm thick) within 4% of validation measurements... optical fiber sensors, process monitor for deposition on substrates with deposition methods that produce uniform coatings on dissimilar shaped substrates" Related: New methods for creating ultra-vibrant optical coatings—applications for solar panels, virtual displays https://phys.org/news/2023-09-methods-ultra-vibrant-optical-coatingsapplications-solar.html Generation of lossy mode resonances using perovskite nanofilms https://phys.org/news/2023-12-generation-lossy-mode-resonances-perovskite.html

Upconversion photoluminescence appears to shine polarized and brighter

https://phys.org/news/2023-09-upconversion-photoluminescence-polarized-brighter.html "dielectric metasurface amplifies upconversion emissions... utilized resonant metasurface high-Q collective modes for polarization-controlled dual-band upconversion bursts... composed of diatomic nano bricks... controlling polarization analyzer rotation demonstrated linearly- and cross-polarized emission at dual bands with ultra-high degrees polarization... efficient enhancement and polarization control of UCNP emission... low-threshold polarization upconversion lasers and hyperspectral imaging/sensing"

Scalable multipartite entanglement achieved with ultracold atoms in optical lattice

https://phys.org/news/2023-09-scalable-multipartite-entanglement-ultracold-atoms.html "coherence and scalability enhancing atomic entanglement fidelity and parallel atomic control... larger multi-atom entangled states... equal-arm, cross-beam interference and spin-dependent superlattice... integrated self-developed single-lattice resolution, wide-band achromatic quantum gas microscopy and multiple sets digital micromirrors... multi-atom global parallel and local single grid point measurement and control... 99.2% filling rate 2D atomic array and entangled Bell states average fidelity 95.6% and  2.2 sec. lifespan"

Corrugated plastic inspires a new design principle for programmable materials

https://techxplore.com/news/2023-09-corrugated-plastic-principle-programmable-materials.html "stable and can be reshaped... buckled groove functions as a defect, and that neighboring defects detect each other: if you bring them closer, they repel... ridges exist of chains of defects that attract and lock each other into place... foldable emergency housing, medical devices (stents that enter body in one shape and fold open into another stable, useful shape, robot parts switch back and forth between programable shapes"

Smartphone utilizes 3D information encryption with dual-light-emitting materials

https://phys.org/news/2023-09-smartphone-3d-encryption-dual-light-emitting-materials.html "3D volumetric optical encryption, moldable and printable dual-light-emitting fluorescent–phosphorescence... viewing-angle-dependent encryption cube-type skeleton polymer composite filaments, employing standard smartphone camera and software... room-temperature multi-light-emitting multidimensional information encryption, enhanced capacity and security... wearable, patchable, and stretchable sensors and displays... high-security information encryption personal biodata protection"

Can cloud-based quantum computing really offer a quantum advantage?

https://phys.org/news/2023-09-cloud-based-quantum-advantage.html "entanglement witness circuit, a mathematical function relating 2 specific qubits and their states, certifies entanglement even when cloud-based service allows only limited machine control... detect entanglement using only the measurement statistics output by the service.. They do not need to be able to control qubit allocation... EW 2.0 twice as efficient at detecting entanglement"

Researchers propose a novel liquid filter for enhanced solar energy utilization

https://techxplore.com/news/2023-09-liquid-filter-solar-energy.html "photovoltaic-thermal, generated heat carried away by heat exchanger containing air or liquid coolant increasing efficiency, heat utilized as thermal energy... fish oil and water emulsion liquid filters over PV modules capture specific wavelengths generating electricity including UV, visible light, and near-IR facilitating conversion to thermal...  stable up to 70 °C... efficiency increased from 70.9 to 84.4% and temperature decreased from 46.7 to 33.1°C... electrical and thermal energies 72.2 and 1176.7 Wh/ day" Related: Elm and Naked Energy announce first North American deployment of innovative solar technology to heat water https://www.altenergymag.com/news/2023/10/10/elm-and-naked-energy-announce-first-north-american-deployment-of-innovative-solar-technology-to-heat-water/40355/ Preparation of F-passivated ZnO for quantum dot photovoltaics https://phys.org/news/2023-11-f-passivated-zno-quantum-dot-photovo

Pi-Pop e-bike powered by supercapacitors instead of batteries, offering eco-friendly and hassle-free commuting solution

https://interestingengineering.com/transportation/lithium-free-e-bike-pi-pop-no-batteries "energy regeneration as riders pedal, coast downhill, or brake.... no plugging in needed... Unlike lithium, supercapacitors are from common and recyclable materials like aluminum, carbon, cellulose, and polymers... lifespan ranging from 10 to 15 years... 15.5 m/h, 250W, 45N.m motor" Related: Electric Vehicle Supercapacitors: The Future of Energy Storage https://ev-central.com/electric-vehicle-supercapacitors-the-future-of-energy-storage/

Study paves the way for new class of nanoscale devices, new opportunities in photonics

https://phys.org/news/2023-09-paves-class-nanoscale-devices-opportunities.html "high-efficiency metasurface optical exceptional points (EPs) leveraging interplay between lossy structure and scattering lightwaves... bilayer metasurface TiO2 metagrating and Si subwavelength grating... metagrating in upper layer directional regulated lightwave, and lossy subwavelength grating lower layer adjustable absorption... light from left reflected to incident path. When from right little retroreflection... reflect and absorb incident light efficiencies 88% and 85% at 532 nm... optical sensing, integrated optics"

Ultrathin films achieve record hydrogen-nitrogen separation

https://phys.org/news/2023-09-ultrathin-hydrogen-nitrogen.html "thinnest MOF film perform hydrogen-nitrogen separation... zeolitic imidazolate frameworks... crystallize ultra-dilute precursor mixture alignment with substrate... suppress out-of-plane growth... room temperature, scalable fabricate uniform 2 nm 2D ZIF films area 100's cm2... array of hydrogen-sieving six-membered zinc-imidazolate coordination ring allows for combination of hydrogen flux and selectivity so efficient gas-separation... clean energy production, fuel cell efficiency, ammonia synthesis, and industrial processes" Related: Ancient architecture inspires a new way to work with metal-organic frameworks https://phys.org/news/2023-10-ancient-architecture-metal-organic-frameworks.html Researchers realize orientation control of cMOF nanofilms https://phys.org/news/2023-10-cmof-nanofilms.html Metal organic frameworks could turn greenhouse gas into 'gold' https://techxplore.com/news/2023-10-metal-fra

One-atom-thick phosphorus/arsenic alloy ribbons could improve batteries, solar cells and sensors

https://phys.org/news/2023-09-one-atom-thick-phosphorusarsenic-alloy-ribbons-batteries.html "conduct electricity above -140°C retaining properties of phosphorus-only ribbons... improving energy storage of batteries and supercapacitors, and enhancing near-IR detectors used in medicine... magnetic so of interest for quantum computers... enhancing battery energy storage and speed charging and discharging... improves charge flow enhancing solar cell efficiency... lithium ions travel in 1 direction only causing cracking creates ribbons... high hole mobility helping electrical efficiency... scalable, low cost"

Engineers grow full silicon wafers of high-performing 2D semiconductor that integrates with state-of-the-art chips

https://blog.seas.upenn.edu/silicon-ally-penn-engineers-grow-full-wafers-of-high-performing-2d-semiconductor-that-integrates-with-state-of-the-art-chips/ "indium selenide,,, low termerature... increasing computing power, decreasing chip sizes and managing power in densely packed circuits... greater control and precision over electricity flow, energy efficient... vertical metal-organic chemical vapor deposition... introduce indium and selenium in equal quantities at same time sending the indium in a continuous stream while introducing the selenium in pulses,,, pulsing combines indium and selenium in equal amounts... chemical purity, crystalline order, and scalable"

Researchers wire up individual graphene nanoribbons

https://phys.org/news/2023-09-contact-wire-individual-graphene-nanoribbons.html "direct-write scanning tunneling microscopy... metal contacts fabricated on individual genomics, nanotechnology and robotics (GNRs) and control their electronic character...  electron beam in precursor STM direct-write trigger metal deposition from hafnium diboride precursor molecules is very precise... done in ultra-high vacuum (UHV). This ensures that the material stays clean from atmospheric water and other "junk" that degrades device performance... scaling microelectronic devices"

A modern digital light processing technology to 3D print microfluidic chips

https://phys.org/news/2023-09-modern-digital-technology-3d-microfluidic.html "cell-related applications including organ-on-a-chip instruments... regulate UV penetration depth for resin photopolymerization... improved resolution and mechanical stability... mathematical model predicts accumulated UV irradiance for resin polymerization to design and print microchannels... printed microchannel with conventional soft lithography or hot embossing generate high throughput monodisperse droplets and cell-laden microgels... high resolution, scaled microfluidic devices"

Step change in upconversion the key to clean water, green energy & futuristic medicine

https://excitonscience.com/news/step-change-upconversion-key-clean-water-green-energy-futuristic-medicine   "Upconversion: gluing (triplet-triplet annihilation) 2 low-energy photons together creates more energetic, visible light... key stage in upconversion achieved in solid state, likely enabling commercial scale... photon generation quantum yield 9.4%... solid state potentially using gel-like substance... upconverting into UV or from IR, hydrogen catalysis, solar energy (raise efficiency limit from 33.7 to 40+%), water purification (upconvert to harsh UV), night vision, 3D printing, treat tumors or create medicines with laser precision" Related: New water treatment method can generate green energy https://phys.org/news/2023-11-treatment-method-generate-green-energy.html Solar-Powered Device Transforms Polluted Water Into Clean Hydrogen Fuel & Purified Water https://scitechdaily.com/revolutionary-solar-powered-device-transforms-polluted-water-into-clean-hydrogen-fuel-pur

Nickel-gold alloys efficiently converts heat at record thermoelectric power factor

  https://www.tuwien.at/en/tu-wien/news/news-articles/news/goldene-aussichten-fuer-thermoelektrika "high conductivity and large Seebeck coefficient... at 10% added nickel thermoelectric performance increases rapidly... less expensive substitutes for gold being studied... space exploration, portable refrigerators, waste heat conversion, smartwatches (autonomous charge using wearer's body heat)" Related: New material could allow devices to turn wasted heat into useful electricity more efficiently https://techxplore.com/news/2023-10-material-devices-electricity-efficiently.html Harvesting solar heat and raindrop energy using non-planar dielectrics https://techxplore.com/news/2023-11-harvesting-solar-raindrop-energy-non-planar.html Breakthrough in Sustainable Energy: Kashmiri Scientist Boosts Thermoelectric Material Performance https://ts2.space/en/breakthrough-in-sustainable-energy-kashmiri-scientist-boosts-thermoelectric-material-performance/#gsc.tab=0 Research unveils Rubi

Unveiling the invisible: A bioinspired CMOS-integrated polarization imaging sensor

https://phys.org/news/2023-09-unveiling-invisible-bioinspired-cmos-integrated-polarization.html "Full-Stokes polarimetric for visible wavelengths inspired by mantis shrimp eye... broadband linear polarization filters and green and red chiral metasurfaces composed of 75.2K filters (pixels)... chip-integrated MPFA onto imaging sensor and calibrated sensor polarization detection with instrument matrix calibration... 80nm total operation bandwidth... high accuracy and speed, large field of view, stable, compact, scalable and CMOS compatibility... autonomous vision, industrial inspection, space exploration, and biomedical imaging"

New quasi-particle bridges microwave and optical domains

https://phys.org/news/2023-09-quasi-particle-bridges-microwave-optical-domains.html "mixing confined quantum fluids of light and GHz sound leads to phonoriton: part photon, phonon and semiconductor exciton... coherently convert information between optical and microwave... energy splitting between 2 light fluids precisely tuned controlling densities using laser... control the device with microwaves and inject 7 GHz phonons into trap... bidirectional microwave-to-optical conversion... interaction scales with both polariton and phonon populations... photonics, optomechanics and optical communication" Related: Phonon engineering for extended lasing beyond the fluorescence spectrum https://phys.org/news/2023-10-phonon-lasing-fluorescence-spectrum.html

Study demonstrates atomic layer deposition route to scalable, electronic-grade van der Waals tellurium thin films

https://phys.org/news/2023-09-atomic-layer-deposition-route-scalable.html "low-temperature, large-area, high-quality synthesis semiconductor deposition.. employed 2 acid-base precursors... co-reactants improve surface reactions and stability while adopting repeating dosing technique injecting precursors in shorter intervals... production of dense and continuous Te thin films... growth on 4-inch wafers, providing precise atomic layer-level precisely controlled thickness and uniform deposition... compatible with vertical 3D structures... transistors, rectifiers, and selection elements processes" Related: A novel avenue for engineering 2D MXene family via precious metals atomic layer deposition techniques https://phys.org/news/2024-01-avenue-2d-mxene-family-precious.html

Method to measure molecular distribution of MXene enables quality control in production process

https://phys.org/news/2023-09-method-molecular-mxene-enables-quality.html "2D property prediction program based on electrical conductivity or magnetic properties change depending on molecule distribution on surface using MXene's magnetoresistance property, enabling quality control and mass production... calculated magnetic transport properties analyzed type and amount of molecules adsorbed at atmospheric pressure and room temperature without additional devices... Hall scattering factor, which affects magnetic transport, changes dramatically depending on the type of surface molecules"

Experimental quantum imaging distillation with undetected light

https://phys.org/news/2023-09-experimental-quantum-imaging-distillation-undetected.html "photon illuminates object and its partner alone detected preventing measurements of coincidence events to reveal information of object sought after. also noise resilient... distillation or purification remove decoherence introduced by environment in quantum system... quantum imaging distillation with 1 and several photon pair degrees freedom... good performance even for noise intensities >250X quantum signal intensity... quantum holography with undetected light... spontaneous parametric down-conversion... quantum imaging, LIDAR"

Reduced nitrogen oxide emissions from industrial vehicles ahead

https://techxplore.com/news/2023-09-nitrogen-oxide-emissions-industrial-vehicles.html "more effective catalysts abate NOx emissions from hard-to-electrify farm machinery and offroad vehicles... acid sites are an important component to drive this reaction at low temperatures and a key consideration for designing superior catalysts that will be more active at lower temperatures," Rappe said. "It is a major development. This field has been so intensely studied. This is a significant advancement because it gives us another tool to actually improve these catalysts"

Touchwind single-bladed floating wind turbine promises half the cost, more power

https://newatlas.com/energy/touchwind-floating-wind-turbine/ "no fancy active pitch controls... sitting on end of pole draped over big barrel with large floating buoy hanging beneath... blade costs 30% less... rated for speeds up to 157 mph... blade fixed to mast slight upward angle. At low wind speeds mast tilts right over, as wind speeds pick up develops lift begins pulling mast upright.... At higher wind speeds big blade pulls tower upright exposing smaller section to wind... easy manufacture 12-MW turbine" Related: Stochastics help wind turbines mitigate sudden swings in power output https://www.eurekalert.org/news-releases/1001981 Active control of wind turbine speed can lead to fewer bird strikes https://techxplore.com/news/2023-09-turbine-bird.html Painting Wind Turbine Blades Black Help Birds Avoid Deadly Collisions https://www.smithsonianmag.com/smart-news/black-wind-turbine-blades-help-birds-avoid-deadly-collisions-180975668/ Droplet-based ‘wind farms’ harvest low-s

Cerabyte ceramic nano memory promises to disrupt the $500 billion storage business

https://www.techspot.com/news/100101-ceramic-nano-memory-promises-disrupt-500-billion-storage.html "yottabyte memory (1k billion TB) using ceramic (inorganic materials that resist heat and corrosion) nano layers 50-100 atoms thick... protected against most data storage media threats... data laser (particle beam) written and read with bits structured in QR code-like matrices... scale from 100 nm to 3 nm bit sizes or to areal density GB/cm2 to TB/cm2 class... 75% cost reduction as needs no media replacement, energy, or data migration... 5k yr. life, temperature range -273° C to 300° C" Related: Video of ceramic storage system prototype surfaces online — 10,000TB cartridges bombarded with laser rays could become mainstream by 2030, making slow hard drives and tapes obsolete https://www.techradar.com/pro/video-of-ceramic-storage-system-prototype-surfaces-online-10000tb-cartridges-bombarded-with-laser-rays-could-become-mainstream-by-2030-making-slow-hard-drives-and-tapes-obsolete

Vaccine completely reverses autoimmune disease without shutting down rest of immune system

https://pme.uchicago.edu/news/inverse-vaccine-shows-potential-treat-multiple-sclerosis-and-other-autoimmune-diseases "itamp down immunity in a very specific way with an inverse vaccine removing immune system’s memory of one molecule, stopping autoimmune reactions... antigen (molecule being attacked by immune system) tagged with the sugar N-acetylgalactosamine (molecule resembling aged cell fragment that liver recognizes as friend rather than foe: peripheral immune tolerance)... can treat after there is ongoing inflammation... multiple sclerosis, type 1 diabetes, rheumatoid arthritis, celiac disease"

Researchers develop high-performance zero thermal expansion composite for precision devices

https://phys.org/news/2023-09-high-performance-thermal-expansion-composite-precision.html "improved negative thermal expansion of Cu2P2O7 NTE, zero thermal expansion (ZTE) Cu2P2O7/2024Al composite, low density and high thermal conductivity resulting in high specific thermal conductivity, good bending strength and machinability, well-bonded interface... good NTE material for compositing and a kind of ZTE composite with excellent comprehensive properties which is expected to be used in high-tech fields with high demand of dimension stability"

New metamaterial-based strategy to combine and transmit multiple light modes

https://phys.org/news/2023-09-metamaterial-based-strategy-combine-transmit-multiple.html "unprecedented data rates especially in fields where large-scale parallel data transmissions and computations are common... light-mode nanowire coupler carrying total multi-mode signal injects desired light mode into bus waveguide or extract one from it sending towards different path... high coupling coefficient... cascading multiple couplers supporting 16 different light modes...  2.162 Tbit/s data transfer rate... easily scalable and compatible with current fabrication... large-scale neural networks, and quantum communications" Related: Zero-index metamaterials and the future https://phys.org/news/2024-02-index-metamaterials-future.html

A breakthrough way to train neuromorphic chips

https://techxplore.com/news/2023-09-breakthrough-neuromorphic-chips.html "on-chip learning without using computer or software... faster and energy efficient, patient data real-time processing... sensor module, hardware neural network, and output classification... even when trained, chip can be used for another problem... chips learn and adapt to their application and environment, do not have to be programmed beforehand... health care devices (smart biosensor, personalized implantable neural networks, control prosthetics)" Related: IBM's NorthPole chip runs AI-based image recognition 22 times faster than current chips https://techxplore.com/news/2023-10-ibm-northpole-chip-ai-based-image.html Exploring the brain basis of concepts by using a new type of neural network https://medicalxpress.com/news/2023-10-exploring-brain-basis-concepts-neural.html New brain-like transistor performs energy-efficient associative learning at room temperature https://techxplore.com/news/2023-12

Researchers find that millimeter structures improve liquid entrainment

https://phys.org/news/2023-09-millimeter-liquid-entrainment.html "liquid uptake and liquid drainage after uptake... accommodat larger quantities of liquid with less deviation... easy drainage from unstructured surface or firmly trapped state of micro-structured surface... more uptake lowers friction, promotes dripping... capillary force reduces viscous force... uniform droplet dripping time across viscosity ranges... batch fabrication, packaging, lens and chip modification, toys being painted, nasopharyngeal swabs for virus testing, tires running through puddle, and intestinal villi absorbing nutrients"

Researchers investigate new physical phenomena on the nanoscale with microstructured fibers

https://phys.org/news/2023-09-physical-phenomena-nanoscale-microstructured-fibers.html "glass fiber enabling homogeneous and constant illumination  diffusing nanoparticles along entire fiber measuring length...  liquid-filled nanochannels containing diffusing nano-objects in 400 nm diameter fiber core center... illuminated intensively and homogeneously preventing light intensity variations at nanochannel's outer edge... characterize freely diffusing 9 nm nanoparticles with high precision... semiconductors, pharmaceuticals, bioanalytics (viruses) and materials sciences"

SnO2 scaffold improves appearance and performance of emerging electrochromic devices

https://phys.org/news/2023-09-brightly-multicolored-future-electrochromic-devices.html "vivid displays, enriched color variations, better stability, cycling, modulation, reflection and absorption... porous nanostructured SnO2 nanosheet scaffold between active electrochromic materials and conducting substrates... enlarges electrochemical active area and facilitates ion diffusion... better ion transport between layers and improved adhesion... improved color changes in composite electrode V2O5 and WO3 by 16%... >2000 cycles... smart windows, rearview mirrors and adaptive camouflage"

A nonrelativistic and nonmagnetic mechanism for generating terahertz waves

https://phys.org/news/2023-09-nonrelativistic-nonmagnetic-mechanism-generating-terahertz.html "precise ultrafast control light-induced charge currents at nanoscale interfaces... antiferromagnetic RuO2 and nonmagnetic IrO2 single-crystal films deflect diffusive charge currents injected from optically excited metal thin film, redirecting from longitudinal to transverse... high-density charge currents across metallic interfaces... IR 3X stronger... high anisotropic electrical conductivity eliminating need for spin-polarization... greater flexibility and scalability... THz spectroscopy, solar cells, artificial photosynthesis, optoelectronics"

Copper-infused nanocrystals boost infrared light conversion

https://phys.org/news/2023-09-copper-infused-nanocrystals-boost-infrared-conversion.html "all-solar utilized for energy generation... tungstic acid–based materials doped with copper utilize near- and mid-IR solar, possessing crystal structure with defects that absorb these wavelengths... fabrication technique: submerged photo-synthesis of crystallites" Related: Scientists observe composite superstructure growth from nanocrystals in real time https://phys.org/news/2023-11-scientists-composite-superstructure-growth-nanocrystals.html

Tool measures plasma source and color of light simultaneously to improve lithography machines for smaller, faster microchips

https://phys.org/news/2023-09-tool-plasma-source-simultaneously-microchip.html "For this new tool, the researchers used a combination of tapered zone plates and transmission grating. Both were produced at MESA+. Tapered zone plates are specialized optical components that manipulate extreme ultraviolet light to precisely image the plasma source. The transmission grating disperses the light into its individual colors, making it possible to individually measure them"

Engineers create artificial cilia at the microscale

https://techxplore.com/news/2023-09-artificial-cilia-microscale.html "paramecia move at 10X their own length/ second and cilia also move fluid... clear away mucus in lungs... magnetized carbonyl iron cilia work collectively like a wave by slowly moving magnet near them altering magnetic field control... cilia rows attached along sides of flat plastic base and set on top paramagnetic material cylinder... continuous wavelike action by continuously rolling magnet distorted field lines allowed each cilia to bend forward individually and snap back into place... useful to pump fluids"

Revealing the effect of AIN surface pits on GaN remote epitaxy

https://phys.org/news/2023-09-revealing-effect-ain-surface-pits.html "on graphene/AlN templates by MOCVD, surface pits effect in AlN on growth and exfoliation of these thin films... nano-sized pits on AlN surface led to degradation of graphene near them at higher temperatures, altering GaN thin film growth modes to bond with AlN substrat causing film exfoliation failure... structural problems in substrate also cause peeling failure,.. substrate recycling is possible... improves semiconductor industry... Moore's law overcome... EVs, LEDs, photodetectors, and power electronic devices" Related: A liquid water-molecule-based graphene heterogeneous photodetector and its application in an oximeter https://phys.org/news/2023-11-liquid-water-molecule-based-graphene-heterogeneous-photodetector.html

New physics-based self-learning machines could replace current artificial neural networks and save energy

https://techxplore.com/news/2023-09-physics-based-self-learning-machines-current-artificial.html "train AI more efficiently using. physical processes instead of digital artificial neural networks... neuromorphic computing... machine parameters optimized by process itself... not requiring external feedback not only saves energy but also computing time... able to run forwards or backwards... non-linear process... processes information in the form of superimposed light waves, whereby suitable components regulate the type and strength of the interaction" Related: New photonic neural networks promise ultrafast computing for complex tasks https://techxplore.com/news/2023-09-photonic-neural-networks-ultrafast-complex.html New technique based on 18th-century mathematics shows simpler AI models don't need deep learning https://techxplore.com/news/2023-10-technique-based-18th-century-mathematics-simpler.html New computing hardware needs a theoretical basis, says study https://techx

AI model speeds up high-resolution computer vision

https://techxplore.com/news/2023-09-ai-high-resolution-vision.html "vastly reduces semantic segmentation computational complexity in real-time on device with limited hardware resources, such as on autonomous vehicles... 9X faster with only linear computational complexity with same or better accuracy... rearrange the order of operations to reduce total calculations without changing functionality and losing the global receptive field... capture local feature interactions and enable multiscale learning recognizing both large and small objects... medical image segmentation" Related: Helping computer vision and language models understand what they see https://techxplore.com/news/2023-09-vision-language.html New camera offers ultrafast imaging at a fraction of the normal cost https://phys.org/news/2023-09-camera-ultrafast-imaging-fraction.html New method helps AI navigate 3D space using 2D images https://techxplore.com/news/2023-09-method-ai-3d-space-2d.html Solar cell material can

Machine learning masters massive data sets: Algorithm breaks the exabyte barrier

https://techxplore.com/news/2023-09-machine-masters-massive-algorithm-exabyte.html "dividing into manageable batches that don't choke computer hardware... efficient for laptops through supercomputers... out-of-memory' implementation of non-negative matrix factorization method allowing factorizing larger data sets, processes 1 at a time, cycling them in and out of memory... processed 340-terabyte dense matrix and 11-exabyte sparse matrix using 25k GPUs... cancer research, satellite imagery, social media networks, national security science and earthquake research" Related: The catch-22s of reservoir computing: Researchers find overlooked weakness in powerful machine learning tool https://phys.org/news/2023-09-catch-22s-reservoir-overlooked-weakness-powerful.html A Hebbian memory that achieves human-like results on sequential processing tasks https://techxplore.com/news/2023-10-hebbian-memory-human-like-results-sequential.html A machine learning–based tool to model phase

Hot summer air turns into drinking water with new gel device

https://techxplore.com/news/2023-09-hot-summer-air-gel-device.html "molecularly engineered hydrogel plus sunlight in conditions as low as 104°F... produce between 3.5 and 7 kg water/ kg gel, depending on humidity... transforming hydrogel into micro-sized particles, water capture and release ultrafast" Related: Mimicking a bird's sticky spit to create cellulose gels https://phys.org/news/2023-10-mimicking-bird-sticky-cellulose-gels.html Hydrogel-assisted microfluidic spinning of stretchable fibers via fluidic and interfacial self-adaptation https://phys.org/news/2023-11-hydrogel-assisted-microfluidic-stretchable-fibers-fluidic.html

New method helps WiFi read through walls

https://techxplore.com/news/2023-09-method-wifi-walls.html "Geometrical Theory of Diffraction and corresponding Keller cones trace still object's edges... imaging the alphabet... if existence of edge determined, edge orientation best matching resulting Keller cone-based signature is chosen for given point... surface curvature, edge orientation, distance to receiver grid, and transmitter location... new directions for RF imaging" Related: Team develops new method for communicating around arbitrary opaque walls https://phys.org/news/2023-11-team-method-communicating-arbitrary-opaque.html

The Australian solar tech that may have found a low cost solution to deep storage

https://reneweconomy.com.au/the-australian-solar-tech-that-may-have-found-a-low-cost-solution-to-deep-storage/ "Raygen: off the shelf organic Rankine cycle turbines, chiller systems and pit storage... easier and cheaper using low temperatures... bird safe... lowest cost firming and dispatchable renewable energy... split into 30MW blocks, with 30 towers and their attendant heliostats, sharing hot and cold water storage, 90°C temperature difference... 4MW and 51MWh, with 3MW connection to grid... round trip efficiency 70% (low thermal/ high electrical efficiency), equivalent to pumped hydro, 1 MW into chiller and 0.7 dispatched" Related:  Successful PROMES-CNRS thermocline test of latent/sensible heat storage https://www.solarpaces.org/successful-promes-cnrs-thermocline-latent-sensible-heat-storage/

Novel membrane could reduce energy expenditure in separating molecules for desalination, drug development

https://phys.org/news/2023-09-membrane-energy-expenditure-molecules-desalination.html "inorganic carbon-doped metal oxide separate organic molecules smaller than 1 nm... 2 low-cost reactants used in molecular layer deposition that process and generate thin films  containing nanopores tuned to control separation molecules ranging from 0.6 to 1.2 nm... withstand harsh conditions, stable up to 284° F and pressures up to 30 atm within organic solvents... tailoring pore sizes match molicules... quickly scaled up... petroleum refining, medicine" Related: New self-cleaning membranes developed by researchers dramatically improve efficiency of desalination technologies https://phys.org/news/2023-09-self-cleaning-membranes-efficiency-desalination-technologies.html Integrated system developed for ice storage cooling and seawater desalination https://techxplore.com/news/2023-10-ice-storage-cooling-seawater-desalination.html IIT Guwahati researchers have developed a heat transfer fluid ba

Air leak detection system visualizes building drafts with the click of a camera

https://www.ornl.gov/news/air-leak-detection-system-visualizes-building-drafts-click-camera   "fast accurate readings including leakage amounts... air flow schlieren photography... walls, windows, doors, dryer vents, outdoor faucets, vent fans, dropped ceilings, plumbing vent stacks, crawl spaces, attic hatches, duct registers... small shifts in background of sequence of imagesusing refraction, where fluid with different refractive index than surrounding area visualized based on distortion of background... algorithms measure velocity and flow rate... looking for air wiggles with leak detection temperature limit 12 to 15°C (goal: 5°C)"

A theory of strong-field non-perturbative physics driven by quantum light

https://phys.org/news/2023-09-theory-strong-field-non-perturbative-physics-driven.html "intensity and spectrum change using driving light source with different quantum photon statistics... splitting driving light into 1 of 2 representations called generalized Glauber distribution or Husimi distribution, then using HHG field conventional simulations... Schrodinger equation simulate separately parts of distribution before combining... attosecond pulses generated via HHG... arbitrary quantum state of light and system of emitters, strong-field physics (Compton effect generating X-ray pulses), quantum sensing and imaging'

Researchers find innovative way to store and process information by maintaining valley polarization at room temperature

https://phys.org/news/2023-09-valley-polarization-room-temperature.html "single crystals chiral lead halide perovskites (R/S-NEAPbI3). Chirality controlling valley polarization... 500 nm flakes layered onto molybdenum disulfide (MoS2) TMD monolayer create heterostructure... TMDs have 2 valleys with same energy... electron can be in 1 valley or other so information stored same way as 1s and 0s... heterostructure lower emission than bare TMD... few trillionths of second charge transfers... selectively populate valleys and use their occupation in  efficient computers, quantum computing"

Using lignin and a catalyst to create an alternative to bisphenol A (BPA)

https://phys.org/news/2023-09-lignin-catalyst-alternative-bisphenol-bpa.html "compounds called bisguaiacols, all of which are based on the use of lignin, a key component of wood. The bisguaiacols are created by inciting reactions between an alkene and a bio-based arene (such as guaiacol)—all set off by H-USY, a recyclable zeolite catalyst. The researchers confirmed that their compounds could be used to make cleaner and healthier plastics. Initial testing also failed to find toxicity in humans" Related: Recycling used wood can make a big contribution to net zero, but needs much better coordination https://phys.org/news/2023-10-recycling-wood-big-contribution-net.html Transforming wood waste for sustainable manufacturing https://phys.org/news/2024-03-wood-sustainable.html Using wood waste products to produce ink for 3D printing of wood objects https://techxplore.com/news/2024-03-wood-products-ink-3d.html

Researchers develop a protocol to extend the life of quantum coherence

https://phys.org/news/2023-09-protocol-life-quantum-coherence.html "based on noise-cancelling headphones... unbalanced echo increased coherence times for nuclear-spin qubits 20X to as long as 3 ms... eliminating need to reverse spin not only extends coherence time but prevents quantum data loss... nuclear spin (ensembles) platforms for quantum sensors (sense temperature or strain field spatiotemporal heterogeneity, and map neuronal activity from electromagnetic fields), gyroscopes, quantum memory, examine electrical currents in EVs, and non-destructive structural health evaluation"

Harnessing high-dimensional quantum states with quantum dots (QDs) and orbital angular momentum (OAM).

https://phys.org/news/2023-09-quantum-potential-harnessing-high-dimensional-states.html "(1) make pure single photons entangled within OAM-polarization space which can be counted directly. (2) make photon pairs that are strongly quantum correlated... quantum communication, quantum computing and encryption" Related: Quantum Surprise: Atoms Producing Entangled Photon Pairs https://scitechdaily.com/quantum-surprise-atoms-producing-entangled-photon-pairs/ Unlocking quantum potential: Harnessing high-dimensional quantum states with QDs and OAM https://phys.org/news/2023-09-quantum-potential-harnessing-high-dimensional-states.html

New bio-based glues form adhesive bonds that grow stronger in water

https://phys.org/news/2023-09-bio-based-adhesive-bonds-stronger.html "nontoxic: zein protein from corn, and tannic acid... water type does not influence performance much but substrate type does... protective skin formed when underwater... once in place can be broken inducing faster bond formation... maximum bonding at 30°C then another increase at higher temperatures... coral reef restoration, construction, manufacturing, biomedical, dental, food and cosmetics" Related: Chemists use nature as inspiration for a sustainable, affordable adhesive system https://phys.org/news/2023-09-chemists-nature-sustainable-adhesive.html Researchers unveil new flexible adhesive with exceptional recovery and adhesion properties for electronic devices https://phys.org/news/2023-09-unveil-flexible-adhesive-exceptional-recovery.html Sustainable cosmetics: Harnessing cyanobacteria for natural active ingredients https://phys.org/news/2023-10-sustainable-cosmetics-harnessing-cyanobacteria-natural.htm

A new LED design for next-level realism in immersive displays

https://phys.org/news/2023-09-next-level-realism-immersive-displays.html "Cheap, simple fabrication via presently available manufacturing methods, ultra-small, full-color, high resolution... gallium indium nitride semiconductors on single unit/ same substrate... sequentially stacked, narrow enough to emit red, blue, green... based on quantum mechanical electron transport through tunnel junctions of thin insulating layer onto same wafer... complex mesa architectures, pixel density 330 pixels/ in., current density 50 amperes/ cm2, LED emission wavelengths 486, 514, and 604 nm respectively" Related: New material concept allows more cost-effective production of blue organic light-emitting diodes https://phys.org/news/2023-09-material-concept-cost-effective-production-blue.html Researchers introduce novel organic light-emitting diode with ultralow turn-on voltage for blue emission https://phys.org/news/2023-09-light-emitting-diode-ultralow-turn-on-voltage.html

Researchers develop polymer that can be adapted to high and low temperature extremes

https://phys.org/news/2023-09-polymer-high-temperature-extremes.html   "1 polymer version soluble in water at low temperatures/ insoluble at higher temperatures... other version opposite behavior... polymer programmed to achieve different behaviors easily adaptable to different applications...  new mechanism governs critical temperature threshold... dipole-dipole interaction predicted temperature at which polymer dissolves... medicine (single capsule dissolves in heat of stomach in 2 stages allowing precise medicine delivery), protein synthesis, protective coatings" Related: Scientists develop nanomaterials using a bottom-up approach https://phys.org/news/2023-09-scientists-nanomaterials-bottom-up-approach.html

Research team develops 2-liter class hydrogen engine capable of running entirely on hydrogen

https://techxplore.com/news/2023-09-team-liter-class-hydrogen-capable.html "irect injection hydrogen engine... pressure >30 bar... turbo charger maintains high thermal efficiency in all domains from ignition to engine load's upper limit allowing stable operation... resolved issue of backfire by injecting high-pressure hydrogen fuel directly into combustion chamber... reduce carbon dioxide and fine dust emissions by 99 and 90% respectively meeting EU's zero-emission requirements... emits nitrogen oxides <15 ppm even without after treatment system purifying exhaust gases... thermal efficiency 40%" Related: The Outlandish 83-Pound One-Stroke Engine That Can Power Cars And Planes https://www.hotcars.com/e-rex-one-stroke-engine/ A Reactivity Controlled Compression Ignition engine can achieve 60 percent thermal efficiency. https://www.roadandtrack.com/new-cars/car-technology/a19909520/gas-diesel-engine-reactivity-controlled-compression-ignition/

Promising quantum state found during error correction research

https://phys.org/news/2023-09-quantum-state-error.html "hidden 'spin-glass' order: some information types automatically protected in quantum algorithms which share features of our model... extra freedom that one has in quantum subsystem codes simplifies the process of detecting and correcting errors. Also, the extra hidden information floating around should be useable in some way for computing" Related: Illuminating errors creates a new paradigm for quantum computing https://phys.org/news/2023-10-illuminating-errors-paradigm-quantum.html Researchers demonstrate quantum error mitigation on prototype, extending coherent annealing range by order of magnitude https://phys.org/news/2023-11-quantum-error-mitigation-prototype-coherent.html

Researchers create new spatial omics method

https://phys.org/news/2023-09-spatial-omics-method.html "combining 2 complex techniques: mass spectrometry imaging (MSI) and spatially resolved transcriptomics (SRT)... visualize both low-molecular metabolites, such as signaling molecules in brain, and RNA transcripts in same biological tissue section... enables exploring connection between gene expression and molecular activity at higher level... spatial biology and pathological research such as neurobiology and oncology"

Scientists demonstrate new, improved way to make infrared light, with quantum dots

  https://phys.org/news/2023-09-scientists-infrared-quantum-dots.html "very efficient and easy to make... cascade technique... created black ink of trillions nanocrystals, spread it onto surface and sent electricity through, electrons travel through series of distinct energy levels, like falling down series of waterfalls. Each time electron falls down an energy level, it has chance to emit some energy as light... works because of quantum mechanics... infrared lasers and cost-effective sensors, especially exhaust emissions tests, and breathalyzers"

Scientists synthesize new organometallic sandwich compound capable of holding more electrons

https://phys.org/news/2023-09-scientists-organometallic-sandwich-compound-capable.html "metallocenes sandwich many different elements forming variety of compounds... accommodate formation of complexes with up to 20 (18 is most stable) electrons... However now added 2 more to a 19-electron and created 21-electron metallocene, stable in solution and solid states and long storage... create novel polymers, glucometers, perovskite solar cells, catalysis and unprecedented organometallic chemistry"

Diffractive optical network enables multispectral quantitative phase imaging in a snapshot

https://techxplore.com/news/2023-09-diffractive-optical-network-enables-multispectral.html "capturing multiple phase images across various spectral bands enabling study of spatial refractive index variations and dispersion characteristics of transparent samples such as cells... spatially structured dielectric diffractive layers, each comprising hundreds of thousands deep learning-optimized diffractive transmissive features... monochrome optoelectronic sensor array integration... compact, high-performance multispectral phase imaging systems for biomedical imaging, material science, and environmental monitoring" Related: Synergy of traditional techniques and deep learning enables single-frame high-precision fringe pattern analysis https://phys.org/news/2023-09-synergy-traditional-techniques-deep-enables.html

Flexible solar cell achieves major power conversion efficiency gains

https://techxplore.com/news/2023-09-flexible-solar-cell-major-power.html "ternary organic solar cells... LA1 (modified with phenylalkyl side chain improves crystallinity and alignment) tweaks cell's internal energy flows (improving conversion of light into power), broadens spectrum absorbed, blends film morphology, improves exciton dissociation, charge generation and transport... crystalline size fine-tuned for improved electric charge transport and suppressed charge recombination... PCE gains >15%, and with Y6 acceptors as host component, >19%" Related: Ductile oligomeric acceptor enables highly efficient and mechanically robust flexible organic solar cells https://phys.org/news/2023-09-ductile-oligomeric-acceptor-enables-highly.html Toronto Engineers Unveil Game-Changing Solar Device, EcoSun https://www.westislandblog.com/toronto-engineers-unveil-game-changing-solar-device-ecosun/ How organic solar cells could become significantly more efficient https://www.tum.de

New York To Paris In 90 Minutes. Can This Startup Make It Happen?

https://www.forbes.com/sites/jeremybogaisky/2023/08/22/new-york-to-paris-in-90-minutes-can-this-startup-make-it-happen/?sh=5fe075f72ec6 "hypersonic drones (Quarterhorse and Darkhorse) and 20 passenger Mach 5 plane (Halcyon) 4,000 mile range costing >$10,000... 2024 first flight... air-breathing aircraft, which use the oxygen around them for fuel combustion instead of carrying it onboard as rockets do, leaving less room for payload like passengers" Related: U.S. Naval research laboratory developing incredible morphing hypersonic engine https://thedebrief.org/u-s-naval-research-laboratory-developing-incredible-morphing-hypersonic-engine/

New scalable, etching-based technique for precise tuning of microdisk lasers

https://phys.org/news/2023-09-scalable-etching-based-technique-precise-tuning.html "photoelectrochemical etching in diluted sulfuric acid... SiO2-capped indium gallium arsenide phosphide microdisks on indium phosphide pillar structures onto polydimethylsiloxane substrate producing laser particles... on-chip photonic communications, on-chip bioimaging, biochemical sensing, quantum photonic information processing, physical optical barcodes for heterogeneous biological samples enabling tagging specific cell types and specific molecules multiplexed assays, flow cytometry, and multi-omics analyses"

New droplet battery could pave the way for miniature bio-integrated devices

https://www.chem.ox.ac.uk/article/new-droplet-battery-could-pave-the-way-for-miniature-bio-integrated-devices "electric eels generate electricity... 2V 65nW 30 min... calcium signalling neurons communicate neurotransmitter release, neuronal firing, synaptic plasticity, and gene transcription... ionic gradient across a chain of droplets inspired by electric eel electricity... 4°C to turn on power... enables neurotransmitter release, neuronal firing, synaptic plasticity, and gene transcription... bio-hybrid interfaces, implants, microrobots, wearable devices, synthetic tissues, targeted drug therapies and accelerated wound healing"

Ionovoltaics in energy harvesting and applications: A journey from early development to current state-of-the-art

https://onlinelibrary.wiley.com/doi/full/10.1002/eom2.12408 "Ionovoltaics energy conversion harnesses water motion with ion dynamics generate electricity... interaction between nanoscopic ionic semiconductor electron flow... solid–liquid interface... bio/chemical sensors... high-efficiency ionovoltaic device powered by small water droplets... solid–liquid interfaces, semiconductor properties, and natural water motion-driven ionovoltaic phenomena"

Graphene not quite perfect but stable enough for technological applications

https://www.tuwien.at/en/tu-wien/news/news-articles/news/graphen-perfektion-ist-unnoetig "destructive interference". "The fact that the current flow decreases dramatically at very specific energy values for quantum physical reasons is a highly desirable effect technologically," explains Florian Libisch. "This can be used, for example, to process information on a tiny size scale, similar to what electronic components do in computer chips... quantum information technology, quantum sensing"

A new protocol to reliably demonstrate quantum computational advantage

https://phys.org/news/2023-08-protocol-reliably-quantum-advantage.html "mid-circuit measurements and cryptographic... qubits segments arranged according functions... split target segments apart from rest of qubits and shuttle away to perform readout, interactively checked against quantum computations performed to validate... implemented with 1 order magnitude fewer quantum gate operations... random number generation, remote state preparation, verifying arbitrary quantum computations, entanglement phase transitions, coherent feedback protocols including quantum error correction" Related: New spin-squeezing techniques let atoms work together for better quantum measurements https://phys.org/news/2023-09-spin-squeezing-techniques-atoms-quantum.html

Researchers discover tin hydride with properties of strange metal

https://phys.org/news/2023-08-tin-hydride-properties-strange-metal.html "chemical interaction between tin and hydrogen through electric transport measurements and synchrotron X-ray single crystal and powder diffraction... high-pressure diamond anvil cells with 2 diamond anvils that forcefully press to each other. Inserted SnH4 between them, when pressed, area 50 µm experiences pressure 2–2.5 million atm... SnH4 becomes semiconductor, then metal, then superconductor... bridge between cuprate and hydride (room temperaturee for later) superconductivity at high pressures" Related: Study reveals the origin of high superconducting critical temperatures in trilayer cuprates https://phys.org/news/2023-11-reveals-high-superconducting-critical-temperatures.html

A particular way of creating quantum entanglement may improve accuracy of advanced quantum sensors

https://phys.org/news/2023-08-quantum-entanglement-accuracy-advanced-sensors.html "lasers tune entanglement interaction of ions in vacuum producing squeezed quantum state... interaction between neighboring particles decreases with distance between particles, spin-exchange interactions more collective behavior... measurement errors halved by entangling 51 ions in relation to individual particles... quantum entanglement makes sensors even more sensitive... satellite-based navigation or data transfer... search for dark matter or determination of time-variation fundamental constants... atomic clocks" Related: Researchers calculate theoretical extension of parametric amplification to improve sensor functionality https://techxplore.com/news/2023-09-theoretical-extension-parametric-amplification-sensor.html What is quantum squeezing? https://phys.org/news/2023-09-quantum.html Exploring exotic spin interactions at microscale using solid-state spin quantum sensors https://phys.org/new

Semiconductor photocatalyst helps to realize borylation reaction

https://phys.org/news/2023-08-semiconductor-photocatalyst-borylation-reaction.html "borylation reactions N-heterocyclic carbene boranes with heterogeneous photocatalyst... synthesis: high-value transformations including hydroboration and boron substitution products... borylation reaction alkenes, alkynes, imines, aromatic (hetero) rings, and bioactive molecules under room temperature and light... gram-scale scale-up, maintain stable yield after multiple cycles... organoboranes obtained synthesize synthetic building blocks containing hydroxyl, borate and difluoroborane" Related: Electron transfer kineties of CdS/Zn(impim) dots-on-rods designed for efficient visible-light reduced C-X bond https://phys.org/news/2023-09-electron-kineties-cdsznimpim-dots-on-rods-efficient.html Researchers construct a highly efficient photocatalytic system based on titanium dioxide nanomaterials https://phys.org/news/2023-09-highly-efficient-photocatalytic-based-titanium.html Syngas photocatalysis

A smart color-changing flexible battery with ultra-high efficiency

https://techxplore.com/news/2023-09-smart-color-changing-flexible-battery-ultra-high.html "flexible smart electrochromic Zn-ion battery visually represent charging and discharging processes using electrochromic polymer anode... π-bridge spacer increases electron and ion mobility efficiency... maximize efficiency electron and ion mobility... π-bridge spacer-incorporated polymer anode... improved energy storage, and zinc-ion discharging capacity of 110 mAh/g 40% greater than previous and 30% increased electrochromic function... fast charging... smart windows replace curtains, wearable technologies" Related: How zinc-ion batteries may solve our renewable energy storage problem https://techxplore.com/news/2023-09-zinc-ion-batteries-renewable-energy-storage.html A revolutionary technology for renewable energy that will facilitate the generalization of the electric car https://ev-riders.com/news/a-revolutionary-technology-for-renewable-energy-that-will-facilitate-the-generalization

Developing silicones that are friendlier toward health and the environment

https://phys.org/news/2023-09-silicones-friendlier-health-environment.html "toxic cyclic oligosolixanes, endocrine disruptor forms during their synthesis... new process for synthesizing silicones in a cleaner and more environmentally-friendly manner by preventing the formation of these small cyclic oligosolixanes"