Researchers at Purdue University have demonstrated an experimental transistor made from a beta gallium oxide semiconductor. The transistor — called a gallium-oxide-on-insulator field effect transistor, or GOOI FET — is interesting thanks to the ultra-wide bandgap inherent in gallium oxide. Beta gallium oxide (ß-Ga2O3) has a bandgap of 4.8 – 4.9 eV. In comparison, gallium […]
purdue university
Thermal metamaterials could help
use waste heat from factories
Researchers have found a way to control the thermal emissions of high-temperature radiation in a way that could lead to the efficient harvesting of waste heat from power plants and factories. The technique uses a thermal metamaterial – nanoscale layers of tungsten and hafnium oxide –to suppress thermal emissions in one portion of the spectrum […]