A new study evaluates the impact of polyvinylpyrrolidone coated silver nanoparticles on the composting of municipal solid waste. The findings suggest that at relatively low concentrations, the organically rich waste management systems' functionality may not be influenced by the presence of silver nanoparticles.
ASTM E2864, Test Method for Measurement of Airborne Metal and Metal Oxide Nanoparticle Surface Area Concentration in Inhalation Exposure Chambers Using Krypton Gas Adsorption, was developed by Subcommittee E56.02 on Physical and Chemical Characterization, part of ASTM International Committee E56 on Nanotechnology.
Originally predicted in the 1920s by Satyendranath Bose and Albert Einstein, applications could include energy-efficient lasers and optical switches, critical components for future computer systems processing Big Data.
By relentlessly miniaturizing a pre-World War II computer technology, and combining this with a new and durable material, researchers at Case Western Reserve University have built nanoscale switches and logic gates that operate more energy-efficiently than those now used by the billions in computers, tablets and smart phones.
Researchers may be one step closer to tapping into the full potential of solar cells. The team found a way to create large sheets of nanotextured, silicon micro-cell arrays that hold the promise of making solar cells lightweight, more efficient, bendable and easy to mass produce.