Today's Tech News: Notable or Not?

https://phys.org/news/2024-06-scientists-behavior-membranes-unprecedented.html "separate out different size solutes... isoporous membranes: all pores same size... hindered transport: fluid medium's internal resistance as solute attempts to go through pore... pores approximately 10 nm diameter, separate solutes with as little as a 5% size difference... solutes get multiple attempts to get through membrane... given longer time, or more likely an improved process design, we believe we will see a clear, sharp separation right where the pore size matched the solute size"

https://phys.org/news/2023-10-nonlinear-optical-crystals-unusual-cationic.html "2 non-centrosymmetric chalcogenides as excellent nonlinear optical crystals... cationic substitution resulting in salt-inclusion chalcogenides with diamond-like anionic frameworks... mixed cations introduced in GaS4 anionic frameworks resulted in wide band gaps and improved high laser-induced damage threshold (LIDT)... strong 2nd-harmonic generation intensities... wide transmittance range, impressive LIDT, sufficient birefringence index, bulk single-crystal form, and physicochemical stability" Related: A 20 kW laser system for producing high-purity crystals https://techxplore.com/news/2024-02-kw-laser-high-purity-crystals.html Polarization metrology for linear birefringence https://www.eurekalert.org/news-releases/1142556

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

https://phys.org/news/2023-07-stick-to-itiveness-self-organization-sticky-micron-to-mesoscale-3d-1.html "fluid mechanics, chemo-mechanical... 2D polymeric sheets, sticky bonds added to specific points as hinges designed to precisely fit together... dropped into solution sink to bottom, reactant added instigates catalytic reaction generating fluid flows: horizontal first moves sheets together along chamber floor, and sticky bonds connect appropriate panel to base, vertical lifts sides upright where again panels connected via sticky bonds to complete structure... self-organized cube and closing its lid... medical, optical, electrical and biomedical"

https://phys.org/news/2023-07-raman-technique-years-frustration.html "low-concentration and low-dose screenings of protein-to-ligand interactions surfaces cooled down can poke with laser and output information I need... same-day turnaround... little sample preparation...clinicians and patients don't have to wait for days and weeks of analysis. You can get all these answers almost right away... smaller sample size with simplier preparation and lower protein concentration, cost-effective" Related: Raman amplification at 2.2 μm in silicon core fibers with prospects for extended mid-infrared source generation https://phys.org/news/2023-09-raman-amplification-silicon-core-fibers.html

https://www.sciencealert.com/study-confirms-experimental-blip-that-could-be-a-sign-of-the-most-ghostly-of-particles "work backwards to determine the number of direct collisions with neutrinos while they were oscillating through their electron flavor... fifth to quarter less germanium than expected... deficit in expected number of electron neutrinos... gaps in Standard Model which could lead to explanations for some of science's big remaining mysteries. If this is indeed the mark of the sterile neutrino... evidence of material that exists in tremendous quantities, yet makes only gravitational dimple in fabric of space" Related: The Dawn of Collider Neutrino Physics https://physics.aps.org/articles/v16/113 The Power of AI and Non-Visible Spectrums in Renewable Energy Solutions https://www.digitaljournal.com/pr/news/cdn-newswire/the-power-of-ai-and-non-visible-spectrums-in-renewable-energy-solutions Graphene power generation – achievements and prospects for widespread implem...

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

https://phys.org/news/2023-04-monolayer-hexagonal-boron-nitride-plasmonic.html "block electron tunneling and extend the ultimate plasmonic enhancement limits in a single-atom-layer gap,... high tunneling barrier formed by monolayer h-BN, actively blocking the electron tunneling effect... detecting intrinsic SERS intensity h-BN single particle cavity... monolayer h-BN blocks electron tunneling using hot electron tunneling quantum computation and layer-dependent scattering spectrum experiments"

https://phys.org/news/2023-04-membrane-near-frictionless-ion.html "CO2 electrolyzers, water electrolyzers, fuel cells, redox flow batteries and ion-capture electrodialysis... screen out specific substances to prevent crossover; efficiently conducting specific ions... triazine framework polymer membrane break conductivity-selectivity trade-off... anti-swelling and anti-aging, low swelling ratio water absorption, rigid channels ensured high selectivity from size-sieving enabling low permeability... neat area-specific resistance 0.17 Ω cm2, extreme densities from 200 to 500 mA cm-2" Related: Superlubricity coating could reduce economic losses from friction and wear https://phys.org/news/2023-06-superlubricity-coating-economic-losses-friction.html Pumping liquids in pulses like the heart reduces friction and energy consumption, shows study https://techxplore.com/news/2023-09-liquids-pulses-heart-friction-energy.html

https://phys.org/news/2023-04-versatile-high-speed-efficient-crystal-actuation.html "2,4-dinitroanisole β-phase crystals (1β) large-angle photothermally resonated high-speed bending induced pulsed UV irradiation...  large thermal expansion coefficient... cooled methanol anisole 1... hexagonal rod-shaped 1β single crystals... pulsed UV laser 375 nm... fast natural vibration 390 Hz photothermal bending 1° increased to 4° when irradiated with pulsed UV light 390 Hz... high response frequency 700 Hz, highest energy conversion efficiency... soft robots high-speed actuation capability" Related: Novel crystal compound melts under ultraviolet light https://phys.org/news/2023-05-crystal-compound-ultraviolet.html Light reveals internal motion in electron crystals and can trigger their melting https://phys.org/news/2026-08-reveals-internal-motion-electron-crystals.html

  https://techxplore.com/news/2023-03-metasurfaces-surface-propagation.html "controlling havoc from earthquakes and  explosions, and smaller scale surface wave filtering and manipulation could induce desirable properties in electronic devices and acoustics... topology optimizes patterned sheets with tunable properties, metasurfaces, control surface waves... resonating structures stop plate waves from propagating into specific area... resonators optimally shaped to have certain resonance and antiresonance"

https://phys.org/news/2023-02-discovery-molecules.html "synthesis of a complex alkaloid found in nature in three steps instead of the previous seven to twenty-xix... SYNTHIA Retrosynthesis Software uses logic based in graph theory providing database of pathways and formulas for millions of molecular structures... non-toxic production of medicines, agrichemicals or materials"

https://www.dgist.ac.kr/en/html/sub06/060202 "triboelectric nanogenerator, the physical energy generated through body movements... rectifier provides negative charge to the body... rate of decrease in body electric potential varies based on voltage, current, and charge triboelectric nanogenerator, and type and surface area of discharger... triboelectric nanogenerator applied to sole of shoe... increase in the electric potential of the body was prevented. This is significantly more efficient than existing wireless antistatic wristbands in the market"

https://phys.org/news/2022-11-semi-nonlinear-etchless-lithium-niobate-waveguide.html "efficient SHG harnessing BIC semi-nonlinear waveguide constructed by electron-beam resist waveguide and thin-film silicon nitride and LN... Low propagation losses for FF and SH waves... achievement of MPM... Large nonlinear modal overlap for FF TM00 and SH TM01 mode... propagation modes guided by patterned low-refractive-index waveguide but confined in high refractive SiN/LN... TM-like modes immersed in high-loss continuous TE-like modes... can decrease propagation losses of both FF and SH" Related: Strong-confinement low-index-rib-loaded waveguide structure for etchless thin-film integrated photonics https://www.eurekalert.org/news-releases/1098481

https://newatlas.com/electronics/tinytv-2-mini/ "sports Raspberry Pi RP2040 microprocessor... measures 1.9 x 1.4 x 1.0 in). 1-in IPS-boosted TFT color display resolution 216 x 135 pixels... sits above 0.6 x 0.4-in front-facing speaker. Power by 3.7V/150-mAh lithium-polymer battery... two hours video playback... even smaller TinyTV Mini 1.0 x 0.94 x 0.86 in... 64 x 64-pixel 0.6-in color OLED screen. It's reportedly good for one hour of playback per charge, but can store up to 40 hours of video on its 8GB card... start at US$49" Related: Researchers demonstrate second-generation digital display with perovskite light-emitting diodes https://techxplore.com/news/2024-07-generation-digital-display-perovskite-emitting.html

https://farsight.cifs.dk/are-we-at-the-end-of-moores-law/ "connection speeds are an issue... solution is edge computing, where devices access storage and processing power located near user... handle all processing and data storage, or function as gateway process data before sent to storage... 5G used mainly by IoT devices... cloud and edge computing, devices only need processing power to handle most common everyday tasks, with peaks of processing outsourced greater reliance on connection stability, and security weaker when data leaves building" Related: Spin-based chip offers new hope for IoT security https://www.eurekalert.org/news-releases/1078296

https://www.pppl.gov/news/2022/go-flow-new-findings-about-moving-electricity-could-improve-fusion-devices "resistive effects... causing ELMs we seeing... improved model... change profiles of plasma... get rid of ELMs... plasma as a fluid. In general, you can’t have a model that includes all of physics in it. It would be too hard to solve. You want a model that is simple enough to calculate but complete enough to capture the phenomenon you are interested in. Andreas found that resistivity is one of the physical effects that we should include in our models"

https://www.popularmechanics.com/science/a40432968/dead-cone-effect/ "large mass — along with beauty and top quarks ... large dead cone... isolate charm quark and reconstruct gluon emissions... Comparing this emission pattern to the emissions from lighter quarks and from gluons revealed the dead cone in the charm quark’s emissions. “Our technique found a way not only to isolate the charm quark but measure an effect that is directly sensitive to the mass it has before it binds into a hadron"

https://scitechdaily.com/our-reality-may-only-be-half-of-a-pair-of-interacting-worlds/ "two interacting worlds with large cosmological constants could override expected behavior from individual cosmological constants... interactions produce behaviors governed by shared effective cosmological constant that is much smaller than individual constants... Each of these worlds is complete world by our normal standards... suggests two worlds could explain small cosmological constant and provides details about how bi-world imprint distinct signature on cosmic background radiation"

https://scitechdaily.com/scientists-create-synthetic-dimensions-to-better-understand-the-fundamental-laws-of-the-universe/ "synthetic dimension on a silicon ring resonator, using the same approach used to build complementary metal-oxide-semiconductors (CMOS)... particular bandwidths... acquired a “comb-like” optical spectra... While the developed device comprises one ring, more could be stacked to cascade effects and quickly characterize optical frequency signals... smaller and compact than previous approaches, which employed optical fibers connected to various components"