source:eurekalertMicrolasers with multiple lasing bands are crucial components in various applications, such as full-color display, optical communications, and computing. Rare earth (RE) elements offer abundant long-lived intermediate energy levels and intraconfigurational transitions necessary for emissions over a wide range of lightwave bands.It’s possible to generate deep-ultraviolet to mid-infrared light by pumping photons through lasing processes known as “downshifting,” to lower the frequency — and 'upconversion,' to increase the energy. Upconversion offers unique advantages, inc...
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Cage with Caps: Selective confinement of rare-earth-metal hydrates in host molecules Rare-earth metals are indispensable for many technical source:miragenewsRare-earth metals are indispensable for many technical products, from smartphones, laptops, batteries, electromotors, and wind turbines, to catalysts. In the journal Angewandte Chemie, a Japanese team has now introduced a molecular “cage” with “caps” that can be used to selectively “confine” certain rare-earth-metal ions for isolation or recycling. © Wiley-VCH, re-use with credit to ‘Angewandte Chemie’ and a link to the ori...
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source:azomRenewable Energy Generation and StorageThe environmental damage caused by fossil fuel use has become apparent over recent decades, facilitating the urgent need to develop reliable and efficient alternative energy solutions. To address the current challenges with climate change and generate renewable energy, several technologies such as solar, wind, biomass, hydroelectric, and geothermal energy generation have been developed.Efficient energy generation requires efficient energy storage to provide optimal performance. Batteries, fuel cells, and supercapacitors have been widely explore...
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source:psu.eduUNIVERSITY PARK, Pa. — What do corncobs and tomato peels have to do with electronics? They both can be used to salvage valuable rare earth elements, like neodymium, from electronic waste. Penn State researchers used micro- and nanoparticles created from the organic materials to capture rare earth elements from aqueous solutions.Their findings, available online now, will also be published in the November issue of Chemical Engineering Journal. “Waste products like corncobs, wood pulp, cotton and tomato peels often end up in landfills or in compost,” said corresponding au...
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