Charge Density Fluctuations on a Dielectric Surface Exposed to Plasma or UV Radiation

Dust particles on a nonconductive surface are known to acquire electric charge and detach from the under plasma conditions and/or when affected by ultraviolet radiation. Similar phenomena occur as result of electrostatic cleaning (shedding) well in nature, e.g., observing levitation dust above lunar surface. A detachment should forces their repulsion Fc exceed sum gravitation Fg adhesive van der Waals FvdW acting particle nonconducting However, paradoxical situation usually arises: three primary different nature Fc, Fg, FvdW, speck with characteristic size order hundreds or thousands nanometers, completely incomparable magnitude, herewith << FvdW. In last decade, numerous attempts have been made explain how can sufficient for that arise approach forces’ values. despite some successes, many questions remain unanswered. This article presents brief analysis appearance process solitary lying To caused accumulation those levitation, one take into account density fluctuations