Minerals form the building blocks of almost everything on Earth. They are made up of crystals—regular, repeating atomic ...

Abstract: This paper presents a folded waveguide slow wave structure for high power traveling wave tube (TWT). The folded waveguide is a rectangular waveguide by bending the groove along the ...

Abstract: The two-frequency tunable resonance effect for electron beam diffraction radiation flowing over a large finite grating made of circular graphene nanotubes is considered. The excitation field ...

Chemistry textbooks explain how reactions start and end, but they rarely show what happens in between. Seeing these hidden moments matters because chemistry is ultimately governed by quantum rules. By ...