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황경현,윤경구,이성국,Hwang, Gyeong-Hyeon,Yun, Gyeong-Gu,Lee, Seong-Guk,Kuzmichov, A.V. 한국기계연구원 1995 硏究論文集 Vol.25 No.-
The aim of this project is the development of technology of production of micro mechanical parts. Materials are Cr, pt or film (thickness $1000-3000\AA$) on glass substrate. Method of manufacturing is resistless direct laser ablation based on the projection technology. A source of radiation is KrF excimer laser(248nm), Experiments of threshold energy are carried out and the results are analyzed by SEM.
황경현,이성국 한국광학회 1990 한국광학회지 Vol.1 No.1
Lasers are used increasingly for specialized engineering applications such as drilling, profile cutting, welding and surface heat-treatment(hardening, alloying, annealing0 of metals and non-metals. The most important characteristics of lasers used for these materials-processing applications are reviewed, with special emphasis on the importance of the controlled heating process. In addition to these processes, some optical devices and supplementary equipment used in laser processing are introduced. Finally, some examples shows the wide variety of laser capability for substitution of traditional materials processing.