New studies explain insulator-to-metal transition of vanadium dioxide
When heated to just above room temperature, the electrical conductivity of vanadium dioxide (VO2) abruptly increases by a factor of 10,000. Experiments coupled with high-performance computation reveal how ...
Clean interfaces: Research could usher in next generation of batteries, fuel cells
Scientists from South Carolina's leading public universities—the University of South Carolina and Clemson University—have made a discovery that could dramatically improve the efficiency of batteries and fuel cells.
Researchers discover N-type polymer for fast organic battery
Researchers at the University of Houston have reported developing an efficient conductive electron-transporting polymer, a long-missing puzzle piece that will allow ultrafast battery applications.
Small electric voltage alters conductivity in key materials
Modern research has found no simple, inexpensive way to alter a material's thermal conductivity at room temperature.
An efficient path from carbon to renewable fuel production
Earth-abundant materials based primarily on carbon, nitrogen and transition metal oxides can be combined into highly efficient energy conversion devices. These devices can be used in fuel cells as well as ...
Calculations reveal how mixtures of different elements can control the thermal properties of nanowires
A mathematical model of heat flow through miniature wires could help develop thermoelectric devices that efficiently convert heat—even their own waste heat—into electricity.
Huge reduction of heat conduction observed in flat silicon channels
Combining state-of-the-art realistic atomistic modelling and experiments, a new paper describes how thermal conductivity of an ultrathin silicon membrane is controlled to a large extent by the structure and ...