Surface roughness induced electric field enhancement and triboluminescence

Details Surface roughness induced electric field enhancement and triboluminescence Surface roughness induced electric field enhancement and triboluminescence

2010-07-12

arxiv.org/abs/1007.1862v1

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 6 figures

Scientific paper

The separation of solids in adhesive contact, or the fracture of solid bodies, often results in the emission of high energy photons, e.g., visible light and X-rays. This is believed to be related to charge separation. We propose that the emission of high energy photons involves surface roughness and surface diffusion of ions or electrons, resulting in the concentration of charge at the tips of high asperities, and to electric field enhancement, which facilitate the discharging process which result in the high energy photons. If the surface diffusion is too fast, or the separation of the solid surfaces too slow, discharging start at small interfacial separation resulting in low energy photons.

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