Contact electrification can arise when physical contact occurs between two materials. In a new report now published on Science Advances, Ding Li, and a team of scientists in nanoscience, nanoenergy and materials science in China and the U.S., detailed atomic-featured photon emission spectra between two solid materials. Electron transfer can take place at the interface from an atom in one material to another atom in another material, alongside photon emission, during contact electrification.
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Source: Phys.org