Today's Tech News: Notable or Not?

https://www.eurekalert.org/news-releases/1061664 "conductive interface of 2 correlated insulators has rich phase diagram even covering insulating/ metallic states by itself... d irac semimetal 5d  iridate CaIrO3,  robust half-metal  manganite La0.67Sr0.33MnO3 heterostructure... layered deposition with varying thicknesses of CIO and LSMO... under tensile strain, both metals stabilized into insulating states, electrical properties varied depending on CIO layer thickness... high saturation field >30 Tesla at 20 K... formed conductive path when subjected to high magnetic field"

https://www.eurekalert.org/news-releases/1061659 "grown wafer-scale uniform green GaN epilayer on 4 and 6" Si (111) substrate... accurate color reproduction/ quality image, high energy conversion efficiency, balanced color spectrum, considerable brightness (>107 cd/m² nits)/ resolution (up to 1080×780)... epilayer with low 5.25×108 cm-2 dislocation density, low 16.7 μm wafer bowing, high STDEV<1 nm wavelength uniformity... high-definition movie/ image playback... seamless integration of Micro-LED displays with Si-based CMOS drivers"

https://www.actualidadmotor.com/en/baterias-de-flujo-para-coches-electricos-2000-km-de-autonomia/ "bi-ION metallic, non-metallic treated salt water redox reaction, non-toxic, non-flammable... NanoFlowcell QUANTiNO twentyfive leading tech... 2 electrolyte liquids, 1 positive/ 1 negative, separated by membrane... high energy capacity...  does not require high pressures... currently, only NanoFlowcell provides liquid solution, so creating a network of refueling stations requires high initial costs... 350.000 km charging cycles... future: organic flow: more sustainable, economic"

https://techxplore.com/news/2024-10-chalcogenide-perovskite-generates-electricity-stressed.html "environmentally friendly (does not contain lead): polymer film infused with 0.3 mm thick chalcogenide perovskite... deforms causing positive/ negative ions within (dipole)... contains barium, zirconium, sulfur..., powerd LED's... use in machines, infrastructure, bio-medical, tires charging vehicle as it drives, streetlights powered by traffic rumble, skyscrapers generating electricity as buildings sway, devices worn by runners or bikers that light up their shoes or helmets"

https://www.anl.gov/article/new-lightinduced-material-shows-powerful-potential-for-quantum-applications "control atomic spins in spintronics... light detecting spin state in methylammonium lead iodide perovskites... modulating neodymium concentration to that of excitons, neodymium probes for spins in excitons... extend exciton’s lifetime >10X adding neodymium... neodymium a quantum sensor under relatively low magnetic field... adjusting neodymium concentration, can detect excitons' spins, allowing entangling up to 10 electron spins, as qubit material for quantum computing... memory devices, quantum sensors"

https://www.newscientist.com/article/2451769-6g-phone-networks-could-be-9000-times-faster-than-5g/ "938 Gb/s, downloading >20 movies/ second, record for multiplex data... wider range: 5 to 150 GHz using radio waves and light... digital-to-analogue converters for lower range portion, lasers at higher end... in talks with smartphone-makers and network operators with rollout expected in 3 o 5 years, but other approaches under development are also vying for position"

https://news.kaist.ac.kr/newsen/html/news/?mode=V&mng_no=40370 "overcomes metasurface limitations using thin, light Janus metasurface precisely controlling asymmetric light transmission through nanometer-sized artificial structures... enhances security by only decoding information under specific conditions... performing different functions in both directions: lens or hologram depending on incidence direction, selectively controlling intensity, phase, polarization... AR, holographic displays, LiDAR, quantum communication"

https://spie.org/news/enhanced-wavelength-conversion-to-advance-quantum-information-networks "due to dispersion-designed structural geometry, interacting lights group-velocity mismatch 100% smoothed... qubit information transferred between different wavelengths without losing coherence, entanglement... nonlinear optical X-cut thin film lithium niobate... broadband 2nd-harmonic up to 13 nm usings mode hybridization allowing precise control in micro-racetrack resonator... enhanced quantum light sources, larger capacity multiplexing, more effective multichannel optical information processing"

https://news.mit.edu/2024/mit-team-takes-major-step-toward-fully-3d-printed-active-electronics-1015 "1 step few hundred µm extrusion printed resettable fuses from inexpensive biodegradables, for basic control operations like regulating electric motor. speed... passed large electric current into polymer filament doped with copper nanoparticles exhibits huge resistance spike,  returning to original level after current stopped, enabling operation as switch... intersecting conductive regions enable resistance regulation controlling voltage fed into switch turning motor on/ off, >4K cycles... fabication uses less energy, waste"

https://www.nanowerk.com/news2/gadget/newsid=65921.php "inorganic silicon-rich glass featuring self-forming nanograting hierarchical structures... ultrashort laser pulse 3D printing enables more electrode surface area, nanoscale channels facilitating rapid ion transport... induces 2 simultaneous reactions in glass-like precursor hydrogen silsesquioxane, resulting in self-organized nanoplates, and precursor converts into silicon-rich glass... optical communication, self-sustaining sensors, wearables, 5D optical data storage, energy storage, more compact/ efficient micro-supercapacitors"

https://www.curtin.edu.au/news/media-release/let-there-be-light-bright-future-for-solar-panels-tv-screens-and-more/ "'flatter, more even (nanoplatelet) zinc sulfide nanocrystals allow more ligands to attach to them more tightly, making various optoelectronics more efficient: brighter TV screens and LED lights, more detailed medical imaging, more efficient solar panels, photodetectors that sense light and convert it into an electrical signal, such as in cameras and sensors, plus laser diodes used in fibre-optic communication that convert electrical signals into light for data transmission"

https://www.nanowerk.com/nanotechnology-news3/newsid=65920.php "entangle photon qubits in computer chip by producing linked pairs using 1.2 μm thick material without needing additional optical gear maintaining link... paired photons vibrating in sync at room temperature... niobium oxide dichloride produces photon pairs efficiently despite its thinness... thicken stacking 2 crystal flakes together positioning grains perpendicular to each other, synchronizing maintaining link... compact, scalable. efficient, secure quantum computers instant quantum communications"

https://phys.org/news/2024-10-visible-communication-encryption-technology-chiral.html "fast, no electromagnetic interference, carries vast information via spatiotemporal polarized superposition quantum communication... chiral nanomaterials adjust polarization axis rotational tilt... twisting crystal using proteins/ DNA possessing chirality whose optical properties cannot be replicated without complete sequence information... combines quantum nanorods with nanowire providing rotational properties to the light, 3D printed 100's µm spatial resolution ns of temporal resolution... local communication, military"

https://energy.umd.edu/news/story/speedy-secure-sustainablemdashthatrsquos-the-future-of-telecom "consumes 100X less energy, 1/10th to 1 femtojoules... non-linear response, enabling quantum communication... Quantum Material Press automated tool including an exfoliator, cataloger, and stacker synthesizing high-quality, optimized exfoliated quantum 2D flakes"  

https://phys.org/news/2024-10-laser-strongest-ultra-short-pulses.html "more reliable 550 W average (peak 100 MW) power, 5.5 MHz... lasts < ps, exit laser in regular sequence 5 million pulses p/sec... 100 μm thin ytterbium disk... mirrors send light inside laser through disk several times before it leaves through outcoupling mirror, amplifying light maintaining stability...Semiconductor Saturable Absorber Mirror, reflectivity depending on strength of light hitting it, coaxing into sending out short pulses (higher intensity) rather than continuous beam... machining, high harmonic frequencies, X-rays"

https://phys.org/news/2024-10-powerful-compact-optical-frequency-unique.html "ultra low-loss silicon nitride waveguides... improved efficiency through coupled micro-resonators' better energy flow, broader pumping, improved temporal overlap between pump/ soliton... even power across comb lines enables consistent signal strength across multiple channels... methods: continuous-wave laser pumping, pulsed, parametrically-pumped microcombs... spectroscopy, optical frequency synthesis, astronomical calibration, compact atomic clocks, optical communications, LiDAR, microwave photonics" See also: Interdisciplinary advances in microcombs: Bridging physics and information technology https://phys.org/news/2024-10-interdisciplinary-advances-microcombs-bridging-physics.html

https://techxplore.com/news/2024-10-dragonfly-wing-pattern-vaults-domes.html "patterns stiffening ribs enabling withstanding both evenly distributed (topologically optimized best)/ asymmetric (turtle shells and dragonfly wings best) loads... ribs: more rigid counteract twisting, thinner ensures overall integrity... overall best: topological optimization with tight constraint on material expenditure allocating 70% of rib material to primary ribs, followed by parametric algorithm using up remaining filling in thinner secondary ribs (Voronoi pattern)... material conserved, greater creative architectural freedom"

https://en.physics.ustc.edu.cn/_t285/2024/0920/c7856a654003/page.htm "demonstrated Hardy’s nonlocality, closes detection efficiency loophole (optical losses), locality loophole (measurement choices could affect outcomes)... quantum mechanics prediction that where 3 Hardy events have 0 probability, non-0 probability for 4th, contradicting local realism... significance level of up to 5 standard deviations across 4.32 billion trials... deepens quantum mechanics understanding/ developing quantum technologies (quantum key distribution, quantum random number certification)"

https://techxplore.com/news/2024-10-ai-physics-meta-antennas.html "wide scanning angle, compact, high transmission gain... algorithm particles' optimization direction guided by extremum conditions derived from variational method, reducing computation time/ decreasing likelihood of suboptimal designs... 94.62806 relative strength, comparable but at significantly lower computational cost... optimal state after only 650 iterations, 1/6th computation time... 22 mm focal length, 1.524 mm thickness... complex multivariate/ multi-objective optimizations, satellite communication, radar, 5G, IoT" 

https://phys.org/news/2024-10-harnessing-quantum-principles-phased-arrays.html "overcomes limited bandwidth, signal congestion... IR delivers robust, interference-free signals... parallels quantum superposition principle in its execution... operates through arrays of smaller, complex optical antennas aligned on flat surface nested within larger arrays... collective behavior amplifies/ sharpens IR (can be adapted for other wavelengths)... dual wavelength clusters for redundancy... energy efficient selectively deactivating idle clusters... health care environments,  industrial/ office spaces"

https://techxplore.com/news/2024-10-solar-cell-fabrication-energy.html "improved stability, reliability, efficiency, affordability, sustainability, lifetime... 2 innovations: (1) hole-selective materials/ perovskite layers integration, simplifying manufacture... (2) inorganic electron transport layer, tin oxide for excellent thermal stability... does not require organic transfer layer... >25% power conversion efficiency optimizing oxygen vacancy defects within tin oxide layer, retaining >95% efficiency after 2,000 hours continuous operation... future: applying to larger perovskite solar modules" Related: Computer simulations reveal stability factors in 2D perovskites for better solar cells https://techxplore.com/news/2024-10-simulations-reveal-stability-factors-2d.html

https://techxplore.com/news/2024-10-defects-solution-deposited-semiconductors-enabling.html "production at lower temperatures, ambient pressure, forming high-speed logic circuits operating in MHz (with delay down to 75 ns) and 508 pixels/ inch micro-displays... requiring fewer transistors drive bright, durable inorganic micro-LED displays and high-speed printable electronics for health care, smart packaging, IoT... processing more efficient, lower cost, better substrate compatibility... copper-indium-selenium ratio 1:5:8 yields 500X greater. mobility... future: find a more eco-friendly caalyst than hydrazine"

https://phys.org/news/2024-10-photonics-approach-quantum-efficiency.html "faster, fault-tolerant, capable of handling complex problems, scalable, resource-efficient using high-dimensional spatial encoding generating large cluster states... encoding multiple qubits within each photon through spatial encoding... cluster states with >9 qubits at 100 Hz... substantially reduces computation time by enabling instantaneous feedforward between qubits encoded within the same photon... quantum computing through photonics"

https://techxplore.com/news/2024-10-generator-offshore-renewables.html "extend installation's lifespan... each module can be added, replaced, moved individually without long downtimes... 10 to 15% reduced cost of energy produced, 30 to 40% increased operational life, 50 to 70% reduced lifetime operating and maintenance costs"

https://techxplore.com/news/2024-10-electrified-reactor-emissions-key-industries.html "alternative to high-temperature... 96% efficiency converting methane into usable energy (75% conversion for traditional)... compact, modular enabling easy integration into existing infrastructure, scalable... 3D-printed monoliths and a precise catalyst coating technique, we were able to optimize surface area and performance, pushing the boundaries of what's possible in methane reforming... chemical (methanol, ammonia, synthetic fuel) manufacturing, fertilizer production, hydrogen generation"

https://phys.org/news/2024-10-scientists-bulk-high-temperature-superconductivity.html "Tc ≈ 80K, pressures above 14GPa, in La3-xPrxNi2O7-δ... can be prepared in a relatively large quantity with better controlled quality and reproducibility via the wet-chemistry sol-gel method... ideal Ruddlesden-Popper structure, but intergrowths of 327/4310 and 327/214 phases detrimental factors... diamagnetic response with 97% superconducting shielding volume fraction"

https://news.northwestern.edu/stories/2024/10/nature-and-plastics-inspire-breakthrough-in-soft-sustainable-materials/ "bio- compatible/ degradable, sustainably sourced, flexible, soft, formed by peptide amphiphiles/ piezoelectric fluoride plastic drives molecular self-assembly when placed in water... tunable peptide sequence tunes ferroelectricity... low external voltage switches multiaxial polarity in multiple directions around circle... ferroelectrics: biomedical devices/ implants, ultralight smart fabrics, human-computer interface, microscopic memory chips, sensors, catalytic processes in renewable energy storage”

https://techxplore.com/news/2024-10-holographic-3d-potential-revolutionize-multiple.html "tiny cavitation bubbles create extremely high temperatures/ pressure for trillionths of second quickly harden resin into complex acoustic holograms containing cross-sectional images... robotic arm movement based on algorithm-designed pattern... improve printing speed up to 20X, using less energy... can change image during printing... printing behind opaque objects: wall, inside tube, already approved for medical applications: print complex tissues (skin grafts), localized targeted drug/ cell delivery"

https://phys.org/news/2024-10-insights-electrode.html "bubbles block parts of electrode surface reducing electrode performance 10 to 25% by area where bubble contacts surface... AI-based open-source software tool automatically recognizes/ quantifies bubbles formed on surface enable control of electrodes' morphology/ chemistry... reduces amount of platinum/ iridium wasted by reaction-blocking bubbles... hydrogen production, carbon-capture, aluminum production,  chemical production using the chlor-alkali process"

https://phys.org/news/2024-10-energy-loss-metal-nanostructures-geometrical.html "called inverse square root law , shifts resonance from high-loss localized surface plasmon resonances to low-loss surface plasmon polaritons, resulting in 2-order-magnitude greater metal arrays' resonance quality... stronger nanoscale light-matter interactions... more powerful, efficient nanoscale optics: sensing, imaging, solar energy"

https://phys.org/news/2024-10-sustainable-material-cellulose-mxene-composites.html "photothermal, electrothermal, biocidal, piezoelectric... pressure sensitivity, electromagnetic interference shielding, antibacterial... zeolitic imidazolate framework-8 in-situ growth on cellulose nanofiber surface, enhancing biocidal activity/ electromagnetic interference shielding... wound dressings, solar desalination, pressure sensors monitoring human movements"

https://phys.org/news/2024-10-nanoscale-method-boosts-materials-advanced.html "on-demand modification of specific topological polarization structure orientation of atoms/ dipoles' internal permanent electric field... switches polarization guided by electrical stylus composed of lead, strontium, titanium, oxygen... data retention without power... devices operating at high frequencies due to intrinsic sub-THz resonances... enabled by intermediate out-of-plane state... memory storage, neuromorphic computing, low-power nanoelectronics, high-speed broadband, tunable optoelectronics"

https://uk.finance.yahoo.com/news/wattage-wine-food-waste-offers-134717434.html "cheap, sustainable, increased energy storage capability... fruit, winemaking compounds (malic, tartaric acid) from food waste streams replace graphite electrode... food acids produce water-soluble metal dicarboxylate electrode materials"

https://techxplore.com/news/2024-09-energy-harvester-generates-electricity-seawater.html "multi-walled carbon nanotubes/ graphene oxide films with different oxygen functional groups as cathode and anode respectively, seawater electrolyte... more cations in electrolyte gather closer to anode, creating potential difference as result of ion rearrangement between 2 electrodes... high energy conversion efficiency, 24.6mW/cm3 power density, 4.2X higher... initial open circuit voltage restored without external energy... ocean sensors (temperature, dissolved oxygen, inorganic nitrogen) where device retrieval challenging"

https://www.earth.com/news/spaceship-thruster-technology-fueled-by-any-type-of-metal-could-fly-indefinitely/ "silicate minerals like olivine and pyroxene also come in handy for spacecraft landing on a moon or comet rich in these burnable metals, where they extract what they need to refuel... ensures enough fuel for extended missions, for: (1) mining and returning to Earth with iron and nickel, precious metals like platinum, gold, silver, (2) future missions where deep-space travel isn’t restricted by the limited availability of fuel... titled: Super Magdrive system"

https://phys.org/news/2024-09-physicists-ultrafast-quantum-entangled-electrons.html "photon emission direction relative to remaining bound electron in cleaved neutral hydrogen atom can be controlled by time interval between 2 laser flashes on scale of few hundred attoseconds... >100,000X faster entangled quantum state control, from nanoseconds to femto- or even attoseconds... electrons' emission direction with respect to protons can be modified by delaying attosecond pulses with respect to maxima and minima of laser light on time-scale of <1 femtosecond"

https://news.mit.edu/2024/ultracold-atoms-edge-state-0906 "cloud of about 1 million sodium atoms in corralled spin in laser-controlled trap at nano-kelvin temperature, crawling over microns in milliseconds, essentially forever, like marbles circling a bowl but without friction or slowing down, along edge of exotic material... flowing only in 1 direction along ring of laser light forming circular wall (edge-state)... analog for studying how 2D confined electrons under magnetic field exhibit Quantum Hall effect, but since atoms are larger, researchers were able to image"

https://phys.org/news/2024-10-harness-liquid-crystal-simple-versatile.html "2 foci, intensities adjustable (not limited to confined area) applying external voltage... lenses use 2 liquid crystal cell/ polymer layers... polarization imaging enhancing image contrast... edge imaging highlighting object outlines making easier to see fine details/ spot shapes...  inspired by multi-functional holographic devices... split left-handed circularly polarized light into 2 focused light beams: left-handed/ right-handed circular polarization... optical interconnections, biological imaging, AR, VR, optical computing"

https://techxplore.com/news/2024-10-coherent-optical-fiber-communication-tbs.html "with optical comb generation/ frequency reference distribution, replacing 100's built-in light sources within transponder modules... 650 carrier/ local oscillator pairs generated over most of S, C, and L bands (16 THz frequency band) without need for compact S-band light sources... transmitter/ receiver same oscillation frequency so no need of independent stabilization... 39-core multicore fiber with 38 cores supporting three-mode propagation, 1 core supporting single-mode...  transmission capacity 336 Tb/s, almost 200X greater"

https://phys.org/news/2024-10-quantum-communication-microwaves-efficiently-diamond.html "diamonds' tin vacancies (where diamond atoms replaced by tin) have optical/ magnetic properties, can be used as qubits when precisely controlled using microwaves... extending qubit coherence time to as long as 10 ms using dynamical decoupling largely suppresses interference... diamond qubits are solid phase so easier to work with... controlled with superconducting waveguides efficiently directing microwaves to defects without generating heat (temperature near absolute zero)... transfers qubit quantum states to photons"

https://phys.org/news/2024-10-hexagonal-magnetic-defects-energy-efficient.html "tailors system's behavior by causing stochastic topological excitations, controlling neural network's dynamics... collective stochastically-controlled artificial neural networks' behavior realized... controllably create topological states associated with ASI defects and demonstrate stochastic but statistically predictable behaviors within the ASI lattice... hardware realizations of low-energy future computing systems: magnetic memory devices, reconfigurable spin-waveguides/ logic"

https://phys.org/news/2024-10-scientists-unprecedented.html "trapping 3D active nematic liquid crystals (elongated molecules aligned in the same direction) within cell-sized spherical droplets... controlling molecule orientation... spontaneous deformation/ flow without external forces... stop moving when confinement is strong... control over active chaos... mix microtubule (biopolymer) bundles crucial for cell division, along with motor proteins/ oil creating emulsion... biological cell alignment, cell division mitotic spindle organization, soft robotics, artificial cells, self-healing materials" Related: Uncrackable: Scorpions and sponges inspire sustainable design https://phys.org/news/2024-10-uncrackable-scorpions-sponges-sustainable.html

https://phys.org/news/2024-10-physicists-strong-coupling-andreev-qubits.html "qubits formed at metal/ superconductor interface (Andreev reflection)... electron from metal enters superconductor becoming part of Cooper pair... hole behaving like positive particle reflects back into metal,  basis states readily controlled/ incorporated into circuits... 2 modes: (1) qubit's quantum state read via resonator, (2) couple 2 qubits allowing them to communicate without losing microwave photons, sharing new quantum state... combined 3 quantum systems... suitable as compact/ scalable solid-state qubits"

https://phys.org/news/2024-10-logic-diffraction-optical-based-parallel.html "based light's properties, resulting in more spatially/ power -efficient, functionally flexible, cooler, massively parallel, high-speed optics... 16 X 16 pixel black-and-white source image combined with series of images representing stages in logic operations, layers placed on top which obscure, manipulate or transmit something from layer beneath... light passed through casting output top layer on sensor, becoming digital storage or presentation... so far: 16 basic logic operations, future:  quantum computing"

https://pv-magazine-usa.com/2024/10/02/storing-solar-power-through-aluminum-rock-composite/ "recycled aluminum/ volcanic rock/ proprietary material preventing  radiative loss, composite stores heat up to 500°C, producing up to 210°C hot water/ steam... enclosed in vacuum-insulated (prevents heat conduction/ convection loss) chamber heated using electric elements... produces steam through small amount of water passed through coil within core, extracting stored energy... varying water volume controls power output... being modular allows storage capacity up to 100 MWh... built 4 MWh first demonstrator"

https://techxplore.com/news/2024-10-key-barrier-safer-efficient-ev.html "safer, more efficient... overcoming resistance where ceramic electrolyte meets electrodes making battery less efficient/ reducing how much energydelivered... creating porous ceramic membrane instead of dense plate, filling it with small amount of polymer, allows lithium ions to move freely and eliminate the interfacial resistance between the solid electrolyte and the electrodes... improves the battery's performance but also creates a stable interface for high-voltage operation, one of the industry's key goals" Related: Solid electrolyte composed of nanoparticles shows promise for all-solid-state batteries https://phys.org/news/2024-10-solid-electrolyte-nanoparticles-state-batteries.html

https://phys.org/news/2024-10-quantum-paves-efficient-ultra-high.html "durable, fast, energy-efficient... narrow band emitters transfer optical data from rare earth embedded within solid material using slightly different wavelengths (multiplexing), to nearby quantum defect... overcomes light diffraction limit, boosting optical storage bit density... near-field energy transfer... quantum defects become excited from ground state/ flip spin state which is hard to reverse enabling long term storage... smaller wavelengths/ tiny defects enable denser data storage... future: how to read out the data"

https://phys.org/news/2024-10-materials-techniques-microelectronics-quantum-technologies.html "increase memory/ logic processing capability, reducing power consumption/ production costs... 2D organic metal halide hybrids... assemble into crystalline structures with different dimensionalities... powering spintronics exploiting electron's spin interaction with chirality... flipping electron spin in transit by forcing electron to go through chiral structure, becoming spin polarized flipping electron to spin in alignment with other electrons... solar cells, light-emitting diodes, photodetectors, quantum technologies"

https://phys.org/news/2024-10-based-microcapillary-biotechnology.html "evanescent light projected into 0.1 to 0.000010 mm diameter glass tube 3D printing nozzle... light transmitted to object, bright scattering light observed, disappearing when object touched.. light scattering overcomes diffraction-limited  resolution... improved stability, yield... glass microcapillary does not break, and target object is not damaged... biotechnology, manipulating cells, micro-electroplating, nano-3D printing, displays, microelectronics"

https://techxplore.com/news/2024-10-illuminate-age-soft-semiconductors.html "organic mixed ionic-electronic conductors are soft, flexible polymer semiconductors... Swells 300% when immersed in liquid electrolyte, yet maintain electronic functionality... soft gel-like crystal polymer structure stretches/ bends forming continuous electronic path around electrolyte bubbles forming between folded polymer ribbons... more efficient ion exchange with minimal strain on material, exhibiting impressive resilience to the physical changes and ion insertion... batteries, electronic devices"

https://phys.org/news/2024-10-solar-cells-2d-molecular-triptycene.html "1,8,13-substituted tripodal triptycene assembled into 2D hexagon stacked 1D, creating 2D + 1D structure... sandwiching pentacene and anthracene chromophores in space between, organizing planar acene chromophores, forming 2 distinct 2D self-assembling structures... single high-energy photon converted into 2 lower-energy triplet excitons, enhancing solar cell efficiency by increasing charge carriers... singlet fission occur with 88% quantum yield for generating pair of triplets and 130% for producing 2 free triplets

https://phys.org/news/2024-09-scientists-uncover-absorbing-properties-achiral.html "dichroism exists in achiral structures: absorbs light differently depending light's wavefront handedness, due to interactions between different parts of light/ material... special kind of twisted light controls/ tunes absorption up to 50%... special twisted light improves light absorption efficiency,,, achiral structures are simpler to make, which could lead to better and more functional optical devices... plasmonic-based spectroscopy and sensing via enhanced optical metrology, optical switches"

https://phys.org/news/2024-09-molecular-method-metal-ions-mimic.html "control chemical reactions using metal ions... sequence of complex chemical reactions a form of information processing requiring far less energy than digital computers... linear equations, parabolas, logical Boolean programmed as chemical reactions, also remembering previous events by adding substance slowing conversion... controlled autocatalytic reactions' rates enabling lingering in 2 states, temporarily storing information...artificial intelligence, smart materials, nanobiotechnology, chemical origins of life"

https://techxplore.com/news/2024-09-cooling-gravity-electricity.html "extracts water from air using cheap, readily available materials... keeps solar cells/ semiconductors cool, repurposed for irrigation, washing, cooling buildings... adding lubricant coating, polymer/ silicon oil, collects more water using gravity... coating eliminates pinning, enabling passive water collection driven by water... passive radiative cooling... vertical double-sided architecture... almost double water collection rate... no mechanical parts like compressors, fans, reducing maintenance" Related: KIMM Achieves Milestone in Cryogenic Technology with New Turbo Expander https://www.businesskorea.co.kr/news/articleView.html?idxno=226913

https://www.pv-magazine.com/2024/09/11/increasing-potential-of-silicon-clathrate-films-for-photovoltaics/ "Type II silicon clathrate bandgap is direct, energy about 1.8 eV, ideal for silicon tandem solar cells... excellent film quality due to thermal press annealing process enables Atomic Force Microscopy image recording on silicon clathrate films... silicon clathrates have silicon cages with removable sodium atom inside... chemical treatment with iodine.enables film with much less Na, enhancing semiconductor/ PV properties... prototype p-n heterojunction devices with metal oxides based on silicon clathrate films"

https://phys.org/news/2024-09-range-interacting-topological-photonic-lattices.html "noise-resistant topologically protected light... trade-off relation between number of signal channels/ channel bandwidth determined by lattice bandgap, prohibits increasing total information capacity... overcome using long-range interactions enabling overlapping lattice structures within 2D plane, tailoring Chern number topological invariants while preserving original lattice band-gap/ topologically-protected edge modes... models higher-dimensional physics on 2D plane, enabling topological phenomena in complex networks"

https://techxplore.com/news/2024-09-revolutionizing-3d-microwave-technology.html "unlike light-based, cures opaque/ resin/ ceramic/ composite materials... more complex, functional, larger parts... rapid prototyping... curing times as little as 6 seconds at 1 KW... print features ranging from few to 20 mm, with potential to scale up to meter-scale... fine-tune for properties of each material... antenna array/ beamforming algorithms instead of light projector... 1 KW pulsed microwave amplifier system could cost $50,000 to $100,000 but in-house design and/ or build might significantly reduce cost"

https://techxplore.com/news/2024-09-fluoride-free-batteries-safeguarding-environment.html "lithium perchlorate based electrolyte replaces fluorinated LP electrolytes along with non-fluorinated aromatic polyamide binder using Hansol Chemical's proprietary technology... reinforces bonding between cathode's active material and aluminum current collector, preventing electrode, significantly extending battery life... lithium chloride/ lithium oxide enrichment lowers interface energy barrier promoting ion migration, speeding lithium diffusion improving output... high-capacity retention, outstanding stability"

https://techxplore.com/news/2024-09-turing-patterns-soft-pneumatic-technology.html "low cost, flexible, soft, deform/ move when inflating/ deflating... 2 interacting gradient-based orientation optimized surface membrane substances, 1 promotes both reaction/ diffusion, 2nd suppresses/ inhibits first, resulting in stable/ repeating patterns... finite element method orients material... generated anisotropic Turing pattern textures corresponding to the original material anisotropy... methods: heat bonding,  embeded embroidery... wearable and assistive devices, adaptive shelters, robotic grippers"

https://techxplore.com/news/2024-09-radiant-convective-terminal-potential-indoor.html "energy efficient switchable convective-radiant heating regulation/ terminal... initially heat up space within 20–40 min., stabilize within 18–22 ℃... better heating capacity, flexibility, thermal response... rapid/ comfortable steady-state heating in low-heating-load areas... single type of radiant-convective terminal can replace the combined use of two conventional heating terminals, reducing cost and simplifying the system. This finding can serve as a guide for low-load intermittent heating"

https://techxplore.com/news/2024-09-supramolecular-crystals-high-hydrogen-storage.html "volumetric more crucial than gravimetric capacity... recyclable... point-contact catenation strategy that utilizes point-contact interactions involving hydrogen bonding to minimize surface loss during catenation. This design strategy endows these supramolecular crystals with balanced high volumetric and gravimetric surface areas, high stability, and ideal pore sizes for hydrogen storage...  onboard hydrogen storage " Related: From Cars to Kitchens: Toyota’s Hydrogen Cartridges Transform Energy Use https://www.hydrogenfuelnews.com/cars-toyotas-hydrogen-cartridges/8567558/

https://techxplore.com/news/2024-09-scientists-digital-encoding-fluorescent-pixels.html "pixel system using microcapsules containing a mixture of fluorescent dyes and phase change paraffins, which absorb/ emitting heat in response to change in temperature or voltage, changing the color of the light they emit... three dimensions would be determined by the position (2D, like in QR codes) and colors (3D) of the pixels, while the fourth dimension is regulated by the material's response to temperature... 3D cybersecurity/ anti-counterfeiting encryption, 4D high-density data storage"

https://phys.org/news/2024-09-team-succeeds-ultra-fast-tiny.html "cryogenic 2D molybdenum diselenide short laser pulsed generating excitons, then trions, then material THz pulsed quickly tuning trions back into excitons, and cycle repeated... bond broken within few ps, rapid switching, almost 1,000x faster... even comparatively low intensity can trigger... extremely compact: optical data processing, flexible THz cameras/ detectors featuring numerous pixels"

https://phys.org/news/2024-09-semimetal-covalency-high-efficiency-electrocatalysis.html "have both metallic/ covalent bonds... 300°C high oxygen reduction avoiding ~600°C causing uneven size, morphology, composition, structure, limiting catalyst performance... in p orbitals' partial filling, d-p π feedback bond formed between platinum/ semimetal atoms as strong covalent interaction, promoting ordering arrangement... 0.794 A mg−1 at 0.9 V mass activity, 5.1% attenuation under CO toxicity, 11X that of commercial Pt/C catalysts... PEM fuel cells"

https://techxplore.com/news/2024-09-semiconductor-functionality-teseo-materials-future.html "holes, positively charged carriers in inorganic semiconductors... combining intrinsic p-type inorganic materials into adaptable/ reliable tellurium-selenium-oxygen... thin-film transistors and flexible photodetectors surpassing metal oxide, metal halide, organic p-type semiconductors... high-performance, cost-effective, air-stable, high-mobility, durable... 0.7 to 2.2 eV. tunable bandgaps... inorganic blending engineered band structure... high-mobility p-channel transistors, solar cells, wideband photodetectors"

https://phys.org/news/2024-09-alternating-currents-alternative-magnets.html "short wavelength spin waves reduces magnonic device footprint... lateral alternating current geometry in synthetic ferrimagnetic vortex pairs achieves spin-wave emission with  several orders magnitude better efficiency...  opposite magnetization patterns in ferrimagnets enables efficient excitation of magnetization pattern using magnetic fields generated by the alternating currents... strain changes their magnetization, spin wave direction steered adjusting amount of current... micromagnetic simulation software, magnum.np"

https://techxplore.com/news/2024-09-quantum-wireless-chip-scale-communication.html "multiple chiplets in 1 system, instead of a large chip, increases computing power without overheating... faster, more energy efficiency, scalable data transfer. going wireless THz using tiny antennas... high noise-sensitivity of THz mitigated, even during high noise, using: (1) controlling electron behavior of high-frequency exposed signals improving response to certain frequencies, 2D semiconductor quantum well enhancing signal detection ... (2) 2 receivers adjusting reference voltage based on noise levels detected"

https://techxplore.com/news/2024-09-unique-straining-affects-phase-silicon.html "pressed/ sheared with large and plastic, or permanent, deformations... silicon 100 billionths of a meter, 0.3 GPa, plastic deformations: transformed silicon's Si-I crystal phase to Si-II (without stress needs >=16.2 GPa... goal isn't to change shape/ size, but nanostructured pure phases/ mixture of phases (nanocomposites) with optimal electronic, optical, mechanical properties... industrial applications"

https://techxplore.com/news/2024-09-sides-semiconductor-simultaneous-functions.html "combines: (1) nitrogen side: high-frequency, power (electronics). (2) gallium side: energy-efficient LED lighting (photonics), (3) potentially acoustics), enabling smaller, cheaper, more energy efficient devices... large electronic polarization along its crystal axis, so different physical/ chemical properties per surface... grow transparent GaN substrates on single crystal wafer 400 µm thick... devices do not degrade... driving a large LED, turning it on and off at kilohertz frequencies—plenty for a working LED display"

https://techxplore.com/news/2024-08-battery.html "factory first charge at unusually high currents depletes lithium 30% but prolongs battery’s life 50%, decreases initial charging time from 10 hours to 20 minutes... lost lithium forms layer on negative electrode protecting from side reactions that would accelerate lithium loss/ degrade the battery faster over time... also creates additional headspace in both electrodes, allowing electrodes to cycle in a more efficient way further improving performance/ lifespan"

https://phys.org/news/2024-09-quantum-error-technology-outperforms-world.html "encoded-fusion-based quantum computing fault-tolerance threshold up to 14% (PsiQuantum's: only 2.7%)... much more resource-efficient with same photon consumption... Korean computers: photon-based and superconducting qubits, ion traps, neutral atoms... patents applied for"

https://techxplore.com/news/2024-09-metal-deposition-technique-enables-fabrication.html "polymer patterns block metal vapor condensation allowing vapor deposition/ patterning at same time without need for separate shadow/ photo masks, enabling patterns with line widths ranging from μm to mm on large scale... polymer pattern's stretchability/ mechanical durability enables deposition on multi-curvature/ elastic substrates... wireless power transmission, curvilinear OLEDs, stretchable LED arrays... future: porous transparent structures in OLEDs' electrodes, camera/ face recognition sensors"

https://techxplore.com/news/2024-09-efficiency-small-electric-fans.html "brushless integrated drives consuming less energy, quieter, lighter,  improved magnetic flux, 50% fewer capacitors... reduced cogging torques of claw pole motor drive by skewing/ slotting claws, with no added cost, minimizing claws' momentary engagement when motor turned, reducing vibrations 70%... aimplified control reduces switching losses, simplified current flow regulation... only switch drives on/ off once per desired rectangle... 3D printed circuit board windings generating ferrite core magnetic field"

https://phys.org/news/2024-09-free-approach-advance-2d-electronics.html "prevents oxidation in 2D semiconductors... evenly coat with amorphous boron nitride: high thermal stability, insulate components, prevent unwanted electrical currents, improve device performance, high dielectric strength... 2-step low-temperature atomic deposition of seed layer before heating to between 250 - 300°C... 30 to 100% improved transistor performance... electrons can go faster through the 2D material than they could if they were between other dielectric materials"

https://techxplore.com/news/2024-09-battery-cathode-material-revolutionize-ev.html "FeCl3 costs 1%–2% of typical cathode/ stores same electricity amount... with lithium metal anode, solid-state electrolyte, battery costs 60%–70%, where battery is 50% of EV cost... no nickel/ cobalt... higher operational voltage than LFP... <5 years from commercial viability in EVs"

https://techxplore.com/news/2024-09-reconfigurable-mimo-based-powered-battery.html "simultaneously decodes lightwave information (photodiodes configured to track light beams)/ harvests energy... mitigates beam wandering/ misalignment... toggles between: (1) single-input single-output prioritizing efficient energy harvesting: 25.7 Mbps maximum gross data rate, (2) multiple-input multiple-output prioritizing high-speed communication: 85.2 Mbps net data rate... powering IoT devices using the energy harvested"

https://phys.org/news/2024-09-antiferromagnetic-diode-effect-layered-mnbite.html "superconducting diode effect: single direction electrical flow in antiferromagnetic topological insulator MnBi2Te4... nonlinear intrinsic diodes... 2 different electrode configurations... (1) having longitudinal electrodes passing current/ transverse electrodes measuring Hall effect, (2) having electrodes arranged in circular pattern around central point... large 2nd-harmonic transport... in-plane field-effect transistors, microwave-energy-harvesters, antiferromagnetic logic circuits, microwave harvesters, spintronics"

https://qazaqgreen.com/en/news/world/2210/ "sustainable alternative to nickel/ cobalt anodes, high-energy density, cost-effective... monoclinic layered domain (type of group symmetry of solid crystal) plus high surface area activates in simple solid-state reaction, LiMnO2 structural transition to spinel-like phase (calcination process), improving electrode material’s performance... voltage output maintained over time... overcomes manganese dissolution using highly concentrated electrolyte solution/ lithium phosphate coating"

https://www.asce-si.ch/onyc/2024/09/i312UHDc589282DYB.html/ "chemical and electrochemical pre-intercalation methods introduce special ions into the electrode materials before the battery even starts working. This helps increase the spaces between the layers in the electrodes, making it easier for ions to move in and out. The technique also improves how well these materials conduct electricity, leading to faster charging and discharging, significantly improved stability/ lifetime, lower costs, and increased energy storage capacity"

https://techxplore.com/news/2024-09-scientists-high-polymer-based-electrode.html "densely functionalized water-soluble poly(ionic liquid), poly(oxycarbonylmethylene 1-allyl-3-methyimidazolium)... graphite anode binder (LIB), hard carbon anode binder (SIB)... high capacities: 297 (LIB) 250 mAhg-1 (SIB), 80% capacity retention after 750 cycles (LIB) 96% capacity retention after 200 cycles (SIB), fast charge-discharge, improved ion diffusion coefficient, lower resistance/ activation energy... also for: biochemical, sensing, catalytic applications" Related: New PVDF alternative battery binder surpasses EU environmental regulations https://techxplore.com/news/2024-09-pvdf-alternative-battery-binder-surpasses.html

https://phys.org/news/2024-09-topological-quantum-closer-method-electrons.html "quantum interference between electrons in nano-scale electronic circuits enable split-electrons as topological qubits... electrons going down different nearby paths destructively interfere, blocking current flow, electrons collectively behaving as if electron split (Majorana fermion)... quantum interference explained by double-slit experiment in quantum mechanics... key ingredient for topological quantum computers"

https://phys.org/news/2024-09-analysis-heterostructures-spintronics-desired-quantum.html "at graphene/ heavy metal interface, strong spin-orbit coupling develops... spin canting effect stabilizes skyrmions, vortex-like spin textures, significantly mediated/ enhanced when a few ferromagnetic cobalt monolayers inserted between graphene/ heavy metal iridium, grown on insulating substrates, enhancing splitting of energy levels... spin-canting effect best with 3 monolayers... graphene-based heterostructures have great potential for the next generation of spintronic devices"

https://interestingengineering.com/energy/solar-roof-tile-heat-pump "Paxos Solar glass roof tiles glued to rails, much lighter, half installation time... connected to heat pump... 25% increased heat pump’s performance coefficient, 20% less energy 1 year need compared to device not getting additional heat from solar tiles... back-contact/ matte surface cells enable angled light capture, 190 W in about 10 X 10' roof space, tiles can be made to any size... sun heats air under modules, rises toward roof ridge, collected in pipe... 1.8°F increase in air temperature switches pipe fan on, air pushed into heat pump"

https://phys.org/news/2024-09-momentum-pure-silicon-indirect-bandgap.html "confined photons to <few nm-scale, widening momentum distribution to that of electron momenta... photon, phonon, electron interacting at same place/ time changing electrons' energy/ momentum, enabling diagonal (in addition to vertical) transitions, improving light absorption/ emmission by 4 orders of magnitude... can reduce silicon layer thickness by same factor... outperform current technologies at fraction of cost... can be integrated into existing fabrication... silicon-based thin-film PV, optoelectronics"

https://techxplore.com/news/2024-09-alloy-production-ores-sustainable-metals.html "saving vast amount of energy, integrating metal extraction, alloying, thermomechanical processing... near-optimized microstructure-property combination directly converts ores or oxides to products... oxides with similar reducibility, mixability at around 700°C... hydrogen reducing agent: water only byproduct (no CO2 emission or product contamination)... avoids frequent cooling/ reheating (no reheating at all)... superior mechanical strength due to refined grain size... future: make scalable, adapt for high-entropy alloys"

https://techxplore.com/news/2024-09-thermoelectric-device-harvest-energy-room.html "no need for 1 side hot/ other side cool... lower cost, higher energy efficiency, no need for hazardous radioisotope thermoelectric generators... many organic compounds easily transfer energy between each other (electron charge transfer interfaces): 180 nm copper phthalocyanine layer, 180 nm copper hexadecafluoro phthalocyanine layer... also, 20 nm each of fullerenes and bathocuproine, facilitating electron transport,,, . open-circuit 384 mV, short-circuit current density 1.1 μA/cm2, maximum output 94 nW/cm2"

https://phys.org/news/2024-09-2d-silk-protein-layers-graphene.html "silk's elasticity, durability, strength, but sable, orderly instead of its naturally disordered state, by way of precision laboratory conditions... biocompatible: nontoxic, water-based... sensitive, tunable transistor... protein layer packed in precise parallel β-sheets... field effect: switch flips on/ off in response to signal... adding antibody to it when target protein binds causes transistor to switch states... microelectronics (wearable, implantable health sensors), computing (memristors in neural networks)"

https://techxplore.com/news/2024-09-device-2d-materials-twistronics.html "replaces one by one twisting by controlling electron density, twist angle... 2 hexagonal boron nitride pieces... tune the nonlinear response of the resulting device opens the door to a whole new class of devices in optics and photonics... transistors, solar cells, quantum computers, low-loss optical communication light sources" Related: New material with wavy layers of atoms exhibits unusual superconducting properties https://phys.org/news/2024-09-material-wavy-layers-atoms-unusual.html

https://phys.org/news/2024-09-antiferromagnetic-spintronics-advance-door-gen.html "B-doping boron into magnetoelectric chromium oxide controls magnetic fields, quantum material whose magnetic states altered above-room temperature by electronic means alone... antiferromagnetism: alternating columns of atoms whose poles point in opposite directions and effectively cancel each other out, yielding virtually no magnetic field... overcomes need for room-temperatures and symmetry-breaking applied magnetic field... faster, energy efficient digital memory and processors"

https://phys.org/news/2024-09-qubit-architecture-enable-easier-quantum.html "coherence linked to qubit junction quality... 2 superconducting layers separated by insulator... overcomes increased current flow, linearity... constriction junction nonlinearity tuned through superconducting transition metal silicides' junction's size, shape... tradeoff between conductivity/ nonlinearity... aligns with current electronics manufacturing capabilities"

https://techxplore.com/news/2024-09-semiconductor-refined-algorithm-wafer-defects.html "automated detection, deep learning, SPD-Conv specialized convolutional neural network identifies minute irregularities... balances accuracy against detection speed...  Convolutional Block Attention Module added to model, sharpening focus on smaller defects that are often missed in manual inspection or by other algorithms... achieved a mean average precision of 92.5% and had a recall rate of 94.1%. It did this quickly, at a rate of 136 images per second, which is faster than earlier systems"

https://phys.org/news/2024-09-synthetic-mini-motor-chemical-energy.html "peptide ribbons few μm long, few nm wide... with addition of fuel ribbons curl up into small tubes, causing them to begin to rotate. ... fuel amount added controls rotation speed, rotation direction influenced by ribbons' molecular building block structure... can move micrometer-sized objects... micro-walkers: several rotating ribbons brought together at central point can crawl along surfaces... future: swim through blood vessels detecting tumor cells, transporting drugs (after harmless fuel developed)"

https://techxplore.com/news/2024-09-squids-octopi-screen-displays-encrypted.html "mechanical materials use magnetic fields, not electronics, for system-level encryption, information processing, computing... clothing, stickers, ID badges, barcodes, e-book readers, wrist bands... encode using magnets with different strengths/ orientations selectively changed polarization... reveals image when near standard magnet, or private image using complex magnet encryption (no code/ electronics to be hacked)... could also be used color-changing surfaces (camouflage)... shaking screen erases until magnetized again"

https://phys.org/news/2024-09-proton-barrier-pore-free-graphene.html "graphene oxide known for high ionic conductivity making it challenging as ion barrier, but eliminating internal pores improved hydrogen ion barrier properties... up to 100,000X better barrier performance... protected lithium foil from water droplets, preventing any reaction between them... protective coatings, rust prevention, hydrogen infrastructure" Related: An electron beam irradiation-assisted coating method for the regulation of hydrophilicity and hydrophobicity https://pubs.rsc.org/en/content/articlehtml/2024/im/d4im00015c Controlling hydrophilicity and hydrophobicity via electron beam-assisted coating technology https://phys.org/news/2024-10-hydrophilicity-hydrophobicity-electron-coating-technology.html

https://phys.org/news/2024-09-energy-magnetic.html "better than using energy-intensive neural networks... recorded swipe left/ right hand gestures with Range-Doppler radar employing 2 Infineon Technologies radar sensors, converted into corresponding voltages... reservoir of multilayered triangular thin film stack with contacts at each corner. 2 contacts supply voltage, causing skyrmion chiral magnetic whirls to move within triangle from which detect complex motions... read-out process uses magneto-optical Kerr-effect microscope (future: magnetic tunnel junction)" Related: Spin-wave reservoir chips can enhance edge computing https://phys.org/news/2024-10-reservoir-chips-edge.html

https://phys.org/news/2024-09-tunable-nonlinear-hall-effect-room.html "generates second-harmonic output up to 2.8 mV (at 300°K), without introducing external magnetic field, order of magnitude higher than previously... tellurium thin flakes work well, inherently breaking inversion symmetry... Hall voltage outputs modulated by external gate voltages.,, primarily driven by extrinsic scattering, with surface symmetry breaking of thin flake structure... replaced AC current with RF signals, realizing wireless RF stable rectified voltage output over a broad frequency range of 0.3 to 4.5 GHz"

https://phys.org/news/2024-09-generating-currents-ultrashort-laser-pulses.html "generate electrons with same orientation, no longer mixed that required filtering...  20 alternating layered platinum/ cobalt target block, each layer 1 nm thick, placed in vessel, directing magnetic field at it from bottom to top, strong enough to align electron spins in both layered materials... fired short pulsed polarized laser, and circularly polarized probe laser, shifting electron spins between layers within few fs, changing magnetic ordering, altering degree of magnetism... faster, more efficient, energy saving electronic devices"

https://phys.org/news/2024-09-stress-dynamic-metal-framework-membrane.html "spatiotemporal mismatch between dynamic crack formation/ point-by-point healing accuracy causes large healing zone, increased membrane thickness, mass transfer resistance... adaptive healing by creating patiotemporal harmony between crack generation/ healing... in situ formed nanoparticles immediately fill crack gaps... retained satisfactory separation performances for azeotropic mixtures... 85% energy consumption saved... separation durability improved >2 orders of magnitude"

https://techxplore.com/news/2024-09-method-decrease-satellites-global-coverage.html "split transmissions from single antenna array into multiple beams precisely where needed, without additional hardware... huge reduction in cost, power consumption... satellite network of 75 covering US reduced to maybe 16... can put in existing satellites but better if new, simpler satellite... less space congestion, debris"

https://phys.org/news/2024-09-simulate-metal-filtered-vcsel-modal.html "metal-dielectric film mode filter flexibly regulates transverse modes... decreased series resistances, higher output power operating in single mode... modal control performance influenced by number of P-Distributed Bragg Reflector pairs, metal-/ oxide- aperture sizes... transverse optical field strongly confined within metal aperture when low number of P-DBRs, but confinement weakened as number of P-DBRs increased... optical gain characterizes change in threshold gain of different transverse modes due to optical scattering"