Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/80654
Title: Laser cleaning of IC mould and its real-time monitoring
Authors: Lu, Y.-F. 
Song, W.-D. 
Hong, M.-H. 
Ren, Z.-M.
Chen, Q.
Chong, T.-C. 
Issue Date: Aug-2000
Citation: Lu, Y.-F.,Song, W.-D.,Hong, M.-H.,Ren, Z.-M.,Chen, Q.,Chong, T.-C. (2000-08). Laser cleaning of IC mould and its real-time monitoring. Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers 39 (8) : 4811-4813. ScholarBank@NUS Repository.
Abstract: Laser-induced removal of organic contaminants on IC mould surfaces was studied both experimentally and theoretically. The mould surfaces before and after cleaning were observed under an optical microscope and analyzed by Auger electron spectroscopy (AES). It was found that the contaminants in the irradiated area were effectively removed by pulsed laser irradiation at a laser fluence greater than the cleaning threshold of 100 mJ/cm2. The cleaning efficiency increases with increasing laser fluence and the damage threshold of the mould surfaces is about 1.05 J/cm2, which is in good agreement with the theoretical damage threshold. We also demonstrated that the acoustic wave detection in real-time can be used to both monitor the surface cleanness during the laser cleaning process and determine the cleaning threshold and cleaning efficiency.
Source Title: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
URI: http://scholarbank.nus.edu.sg/handle/10635/80654
ISSN: 00214922
Appears in Collections:Staff Publications

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