Science news articles about 'bandgap'

... uncontrolled and not compatible with device applications. "Creating and especially controlling a bandgap in bilayer graphene has been an outstanding goal," says Wang. "Unfortunately chemical doping ...

... travel at near light speed. But without a bandgap, graphene's promise for electronics and photonics can't ... realized. Now researchers can precisely tune a bandgap in bilayer graphene from zero to 0.25 ...

... structure prevents the propagation of light of a certain range of wavelengths. Materials with such bandgaps are necessary if researchers are to engineer optical circuits that can manipulate visible ...

... to biomedical applications, the new nanoparticles could also have applications in the production of photonic bandgap devices with high optical contrast, contrast agents for ultrasonic microscopy or ...

... around the world are making copolymers with alternating donor and acceptors to attain low bandgaps. Most of them are having trouble attaining adequate molecular weight, so this new synthetic method ...

... history of research into both photonic and phononic crystals, which use tiny energy traps called bandgaps to capture quanta of light or sound within their structures. What hadn't been done before ...