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    Category Chemistry/Nanotechnology

    Solar Power: ‘Wonder material’ Phosphorene Nanoribbons live up to hype in first demonstration

    December 22, 2021, Categories  Chemistry/Nanotechnology

    Researchers have incorporated phosphorene nanoribbons into new types of solar cells, dramatically improving their efficiency.

    Phosphorene nanoribbons (PNRs) are ribbon-like strands of the 2D material phosphorus, which, similar to graphene, are made of single-atom-thick layers of atoms. PNRs were first produced in 2019, and hundreds of theoretical studies have predicted how their properties could enhance all kinds of devices, including batteries, biomedical sensors, and quantum computers.

    However, none of these predicted exciting properties have so far been demonstrated in actual devices...

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    Engineers produce the World’s Longest Flexible Fiber Battery

    December 21, 2021, Categories  Chemistry/Nanotechnology

    The fiber battery continues to power an LED even after partial cutting indicating that the fiber battery system is free from electrolyte loss and from short-circuiting.

    Researchers have developed a rechargeable lithium-ion battery in the form of an ultra-long fiber that could be woven into fabrics. The battery could enable a wide variety of wearable electronic devices, and might even be used to make 3D-printed batteries in virtually any shape.

    The researchers envision new possibilities for self-powered communications, sensing, and computational devices that could be worn like ordinary clothing, as well as devices whose batteries could also double as structural parts.

    In a proof of concept, the team behind the new battery technology has produced the world’s longest flexible fiber ...

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    New Smart-Roof Coating enables Year-Round Energy Savings

    December 17, 2021, Categories  Physics, Chemistry/Nanotechnology

    Samples of an all-season smart-roof coating designed to keep homes warm during the winter and cool during the summer – without consuming natural gas or electricity. The device looks like Scotch tape, and can be affixed to solid surfaces such as a rooftop. Research findings by scientists at the Department of Energy’s Lawrence Berkeley National Laboratory point to a groundbreaking technology that outperforms commercial cool-roof systems in energy savings. Credit: Junqiao Wu, Lawrence Berkeley National Laboratory

    Scientists have developed an all-season smart-roof coating that keeps homes warm during the winter and cool during the summer—without consuming natural gas or electricity. Research findings reported in the Dec...

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    Scientists Develop Biodegradable Printed Paper Batteries

    December 16, 2021, Categories  Chemistry/Nanotechnology

    Fabrication and characterizations of hydrogel cellulose paper (HCP). a) Schematic of original CP and HCP. b) Optical image of HCP (top) and original CP (bottom) with printed circuit patterns. c) One piece of HCP under mechanical deformation. SEM images of d) CP and e) HCP. f) Stress–strain curves of HCP and CP. g) The biodegradability tests of CP (left) and HCP (right) under moist soil. Yellow dash circles show outline of the samples. h) Photograph of a dry HCP (left) and a swollen HCP (right) with printed patterns. Blue dash squares with the same size of 30 mm × 30 mm show the boundaries of HCP. i) Galvanostatic plating/stripping curves of zinc symmetrical cells at a current density of 5 mA cm−2 and a cut-off capacity of 1 mAh cm−2. Credit: DOI: 10.1002/advs.202103894

    Scienti...

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