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Showing posts with the label lead

Inexpensive lead iodide can support phonon-polaritons, compressing/ confining light at nanoscale, enabling THz photonic microcircuits

https://www.eurekalert.org/news-releases/1126815 "6G needs THz, but wavelengths too long for compact microchips... overcome: dissolve salt in water creating supersaturated solution, crystallize heating to 80°C, couple light/ phonons within lead iodide lattice confinement compressing THz into <1 μm regions (original wavelength 100s of μm)... lead iodide light-vibration oscillations persist for long time before dissipating, stabilizing data transmission... photonic microcircuits faster/ generate less heat... waveguides, resonators, beam splitters/ modulators"

Removing lead or other heavy-metal contaminants from water in a process far more energy-efficient than any other currently in use

https://news.mit.edu/2021/removing-lead-water-electrodialysis-0922 "first such method that might be applicable for treating household water supplies, as well as industrial uses... uses a process called shock electrodialysis, in which an electric field is used to produce a shockwave inside an electrically charged porous material carrying the contaminated water... costs are mostly for the ongoing energy input, which is very small... We do have a reasonable idea of how to scale this up" Related: Zapping Untreated Water Gets Rid Of More Waterborne Viruses https://today.tamu.edu/2021/10/20/zapping-untreated-water-gets-rid-of-more-waterborne-viruses/ Microwave-assisted synthesis of biomass-derived N-doped carbon dots for metal ion sensing https://www.eurekalert.org/news-releases/1097204