#Sustainable water quality sensor made from human hair-derived carbon dots

“#Sustainable water quality sensor made from human hair-derived carbon dots” Credit: CC0 Public Domain Griffith University researchers have used human hair waste to develop sustainable organic hi-tech devices for water quality testing of contaminants. Professor Qin Li and a team of researchers from the School of Engineering and Built Environment and Queensland University of Technology…

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#Researchers report 3-D printed latex rubber breakthrough

“#Researchers report 3-D printed latex rubber breakthrough” An interdisciplinary group of chemistry and mechanical engineering researchers developed a novel process to 3D print latex rubber. Latex rubber parts, such as this impeller printed at 100 micron resolution, allow nondestructive reuse of complex molds because the parts exhibit a unique combination of flexibility and toughness. Credit:…

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#Solar cell material performs better under pressure

“#Solar cell material performs better under pressure” Segregation of bromide and iodide in perovskites results in an inhomogeneous energy landscape, depicted as hills and valleys. At high pressure, the iodide and bromide remain homogeneously distributed, so that the perovskites maintain their favorable properties for solar cells. Image credit: THISillustrations.com Solar cells produced from a combination…

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#A new strategy to synthesize 2-D inorganic materials used in capacitors, batteries, and composites

“#A new strategy to synthesize 2-D inorganic materials used in capacitors, batteries, and composites” Surface reactions of MXenes in molten inorganic salts. (A) Schematics for etching of MAX phases in Lewis acidic molten salts. (B) Atomic resolution high-angle annnular dark-field (HAADF) image of Ti3C2Br2 MXene sheets synthesized by etching Ti3AlC2 MAX phase in CdBr2 molten…

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#Imaging of sequential potential distribution changes in electrodes during charge/discharge

“#Imaging of sequential potential distribution changes in electrodes during charge/discharge” Changes in electrical potential distribution across a composite cathode during charge (a–f) and discharge (g–l) processes. Credit: National Institute for Materials Science NIMS has succeeded for the first time in visualizing sequential changes in electrical potential distribution across a composite electrode during charge/discharge reactions in…

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#Tale of the tape: Sticky bits make better batteries

“#Tale of the tape: Sticky bits make better batteries” At left, a copper current collector with a laser-induced silicon oxide coating created at Rice University. At right, a scanning electron microscope image of the coating created by lasing adhesive tape on the copper collector. Credit: Tour Group/Rice University Where things get sticky happens to be…

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#Producing spoke wheels automatically and flexibly from composite materials

“#Producing spoke wheels automatically and flexibly from composite materials” Dr.-Ing. Marcel Bücker stands in front of the running production plant, a rotating tooling plate. Credit: Technische Universität Kaiserslautern Even frescos of ancient Egypt depict them: spoke wheels—and their basic form hasn’t changed at all. They can be found on bicycles, cars, and in industry. In…

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#Molecularly thin interface between polymers for efficient carbon dioxide capture membrane

“#Molecularly thin interface between polymers for efficient carbon dioxide capture membrane” Freestanding and mechanically strong nanomembranes composed of two polymeric layers demonstrated superior carbon dioxide separation from nitrogen. As revealed by the study the surface of the composite membrane played a crucial role to achieve the CO2 selectivity. The interface layer composed of the interpenetrated…

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