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UNEXPECTED DISCOVERY SEEMINGLY DEFIES LONG-HELD EXPERIMENTAL LAW OF PHYSICS, RESEARCH TEAM CLAIMS source:thedebriefA discovery involving variance in friction at different speeds between two different kinds of surfaces seemingly defies an experimental law of physics, according to newly published research.An international team of researchers with the University of Basel and Tel Aviv University report that friction between graphene structures against platinum surfaces appears to vary with speed, an observation which they say seemingly defies Coulomb’s law.Named after French physicist Charles...
Release time: 2023 - 02 - 06
Rare earth minerals could help in climate change fight, but mining raises environmental concerns: expert source:cbc.caWhile rare earth minerals are now being touted as a key part of efforts to reduce greenhouse gases, there are environmental concerns in extracting these minerals from the ground, says an expert in environmental considerations around mining.Demand is growing for rare earth elements — a group of metals and minerals that includes lithium, graphite, nickel, cobalt and copper that are used in batteries for everything from vehicles to smartphones.Rare earth elements are being pr...
Release time: 2023 - 02 - 02
source:phys.orgResearchers at Oak Ridge National Laboratory have zoomed in on molecules designed to recover critical materials via liquid-liquid extraction, or LLE—a method used by industry to separate chemically similar elements.The team had previously designed a novel ligand, or collector molecule, to grab select lanthanides from rare-earth mineral solutions.Lanthanides are rare-earth metals critical to energy and national security technologies for magnets, electronics and catalysts. They occur together naturally in mineral ore deposits, but their chemical similarities make separating indivi...
Release time: 2023 - 02 - 01
source:phys.orgCritical Materials Institute researchers at Oak Ridge National Laboratory and Arizona State University have studied the mineral monazite, an important source of rare-earth elements, to enhance methods of recovering critical materials for energy, defense and manufacturing applications.Rare-earth elements occur together naturally in mineral ores such as monazite but are economically challenging to recover. New approaches to separate the valuable ore from unwanted materials are needed.The research team combined theory and experiment to gain atom-level insights on monazite, providin...
Release time: 2023 - 02 - 01
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