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Abstract: We demonstrate cold field electron emission from graphene and metallic surfaces driven by the electric field of lightwaves at terahertz frequencies. Electron energy, emission threshold, and ...

Abstract: In this paper, we present the results of development of slow-wave structures (SWSs) for miniature W-band traveling-wave tube (TWT) amplifiers with multiple sheet electron beams. Two designs ...

A researcher at the Department of Physics at Tohoku University has uncovered a surprising quantum phenomenon hidden inside ordinary crystals: the strength of interactions between electrons and lattice ...

Boron, a chemical element next to carbon in the periodic table, is known for its unique ability to form complex bond networks. Unlike carbon, which typically bonds with two or three neighboring atoms, ...