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Showing posts from May, 2022

Nanoparticles that mimic plant pigment to deliver better solar panels

"synthesized nanoparticles that mimic what chlorophyll (the green pigment in most plants) does in nature—absorb light and convert it to usable energy with high efficiency... Mother Nature can teach us so much as we all think of ways to nurse our planet back to health. In this study, we looked at how light is absorbed, enhanced and utilized in biological systems, and we have incorporated those mechanisms into our own hybrid devices... nanoparticles platform... light absorbers... enhanced efficiency"

Light instead of electricity: A new kind of 'green hydrogen'

https://phys.org/news/2022-05-electricity-kind-green-hydrogen.html "Tiny inorganic clusters... small number of atoms anchored on surface light-absorbing... titanium oxide... deposit clusters on titanium oxide, where they can act as catalysts for water splitting. Titanium oxide is sensitive to light... energy of the absorbed light leads to the creation of free-moving electrons and free-moving positive charges in the titanium oxide. These charges then allow the clusters of atoms sitting on this surface to facilitate the splitting of water into oxygen and hydrogen"

NREL creates highest efficiency 1-sun solar cell

https://www.nrel.gov/news/press/2022/nrel-creates-highest-efficiency-1-sun-solar-cell.html "quantum wells in middle layer extend bandgap GaAs cell and increase amount light that cell absorb... optically thick quantum well devices without major voltage loss... anneal GaInP top cell during growth process... drastically reducing cost of III-V cells... communications satellites... 34.2% for a beginning-of-life measurement. The present design of the cell is suitable for low-radiation environments, and higher-radiation applications may be enabled by further development of the cell structure"

New metasurface-based device creates different images depending on light and environmental conditions

https://phys.org/news/2022-05-metasurface-based-device-images-environmental-conditions.html "photonic metasurfaces that operate visible range biomedical applications... deliver complex information... images immediately interpreted... integrating different photonic into one device... holographic metasurfaces encode more than one image... meta-atoms act like pixels... reflects light of specific wavelength in dry conditions... high reflectivity when different wavelength used in wet conditions... refractive index of the surrounding medium as an additional degree of freedom" Related: Bringing angular momentum to holograms and metasurfaces https://phys.org/news/2023-03-angular-momentum-holograms-metasurfaces.html Optically controlled metasurfaces for dynamic dual-mode modulation https://phys.org/news/2023-04-optically-metasurfaces-dynamic-dual-mode-modulation.html Dynamic interactive bitwise meta-holography with ultra-high computational and display frame rates https://phys.org/news

Lasers and ultrasound combine to pulverize arterial plaque

https://newatlas.com/medical/lasers-ultrasound-combine-pulverize-arterial-plaque/?jr=on "lases inserted into artery with catheter, thermal energy it generates turns water... to bubble... low-power lasers... mix of lasers and ultrasound tackle abnormal microvessels in the eye that cause blindness and blood clots in veins... explode tiny bubbles in cancer wiping out cancerous cells within tumor. Because it destroys rather than compresses plaque... lower risk of artery re-narrowing as compared to balloon angioplasty and stenting" Related: Liver cancer research: Iron-dependent cell death could be key to novel combination therapies https://medicalxpress.com/news/2023-02-liver-cancer-iron-dependent-cell-death.html Scientists propose using carbon-coated magnetite nanoclusters for synergistic cancer therapy https://phys.org/news/2023-02-scientists-carbon-coated-magnetite-nanoclusters-synergistic.html Researchers make major advance with cancer-killing antibody-drug conjugates https://