Laser removal of particles from solid surfaces
نویسندگان
چکیده
Laser removal of particles from solid surfaces was investigated both theoretically and experimentally. A cleaning model was established for laser-induced removal of particles from solid surfaces by taking Van der Waals force, capillary force and cleaning force into account. Laser cleaning forces are induced by fast thermal expansion of particles and/or solid surfaces irradiated by laser for dry laser cleaning and evaporating liquid film heated by laser irradiation for steam laser cleaning, respectively. It was found that cleaning efficiency depends on laser fluence, pulse number, wavelength, incident direction and liquid properties. Cleaning thresholds can be obtained by comparing cleaning force and adhesion force. The experimental results are good consistent with theoretical analysis.
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