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Proceedings Paper

Laser surface cleaning and real-time monitoring
Author(s): Yongfeng Lu; Wen Dong Song; H. M. Hong; Yuan Wei Zheng
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Paper Abstract

Laser cleaning has emerged as an effective cleaning technique for removing contaminants from solid surfaces. Dry laser cleaning and steam laser cleaning have been developed recently, relying on pulsed laser heating of the heating of the surface without and with the presence of a thin liquid coating. Two cleaning models for the viewpoint of force and energy for dry laser cleaning and a cleaning model for steam laser cleaning were established for removal of particles from solid surfaces by taking Van der Waals force, capillary force and cleaning force into account. The models not only explain the influence of laser fluence on cleaning efficiency, but also predict the cleaning thresholds. Laser- induced removal of film-type contaminants has been studied and the surface cleanliness has been studied and the surface cleanliness can be monitored in real time by acoustic and electric means.

Paper Details

Date Published: 25 February 2000
PDF: 7 pages
Proc. SPIE 4070, ALT '99 International Conference on Advanced Laser Technologies, (25 February 2000); doi: 10.1117/12.378176
Show Author Affiliations
Yongfeng Lu, National Univ. of Singapore (United States)
Wen Dong Song, National Univ. of Singapore (Singapore)
H. M. Hong, National Univ. of Singapore (Singapore)
Yuan Wei Zheng, National Univ. of Singapore (Singapore)

Published in SPIE Proceedings Vol. 4070:
ALT '99 International Conference on Advanced Laser Technologies
Vladimir I. Pustovoy; Vitali I. Konov, Editor(s)

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