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source:news.yaleScientists have found a new, nanoscale link between superconductivity — the flow of electric current without a loss of energy — and a phenomenon known as charge density waves.The discovery, which is described in the journal Science, is a tantalizing step in the decades-long search for room-temperature superconductors that could unleash a new generation of electronics and computers.The vast majority of superconducting materials operate at intensely cold temperatures, typically below -320 degrees Fahrenheit, making them impractical to use without a cooling system. Developing supe...
Release time: 2022 - 05 - 26
source:natureAbstractAn optimized sol–gel protocol was carried out to produce an yttrium aluminum garnet (YAG) xerogel from aluminum alkoxide and an yttrium salt on a semi-pilot scale. This xerogel was successfully used without prior pyrolysis as a solid load with the aid of additives in the preparation of pastes. Thermal treatment of the green bodies, obtained by robocasting of the paste, led to cohesive single-phase YAG ceramics. Manufacturing ceramic pieces by additive methods will allow shaping complex forms, while the single step conversion/consolidation would simplify the technological p...
Release time: 2022 - 05 - 25
source:phys.orgResearchers at Northeastern have discovered a new quantum phenomenon in a specific class of materials, called antiferromagnetic insulators, that could yield new ways of powering 'spintronic' and other technological devices of the future.The discovery illuminates 'how heat flows in a magnetic insulator, [and] how [researchers] can detect that heat flow,' says Gregory Fiete, a physics professor at Northeastern and co-author of the research. The novel effects, published in Nature Physics this week and demonstrated experimentally, were observed by combining lanthanum...
Release time: 2022 - 05 - 24
source:azomBackgroundPhotocatalysis provides a long-term solution for converting solar energy into high-value chemical fuels. Over the last few decades, a lot of effort has gone into discovering and designing better photocatalysts. Despite this, they have poor light absorption and responsiveness, simple recombination of photogenerated carriers, and a slow surface catalytic reaction rate.To improve the performance of photocatalysts, a variety of solutions have been proposed including doping heteroatoms, adding cocatalysts, and creating heterojunctions. These enhancements frequently make catalys...
Release time: 2022 - 05 - 23
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