KrF Excimer Laser Micromachining of Silicon for Micro-Cantilever Applications

Ahmad Fitri Anuar Mahayudin, Yufridin Wahab, Fazmir Hamzah, Mazlee Mazalan
2014 Proceedings of International Electronic Conference on Sensors and Applications   unpublished
The conventional photolithography of crystalline silicon techniques is limited to two-dimensional and structure scaling. This can be overcome by using laser micromachine, a technique capable of producing three-dimensional structure and simultaneously avoiding the needs for photomasks. In this paper, we report on the use of RapidX-250 excimer laser micromachine with 248 nm KrF to create in-time mask design and assisting in the fabrication of micro-cantilever structures. Three parameters of the
more » ... ser micromachine used to aid the fabrication of the micro-cantilever have been investigated; namely the pulse rate (i.e. number of laser pulses per second), laser energy and laser beam size. Preliminary results show that the 35 um beam size and 15 mJ of energy level is the most effective parameter to structure the desired pattern. The parallel lines spacing of the structure can be reached up to 10 um while cutting, holes drilling and structuring the cantilever using the laser beam can be accomplished to as low as 50 um in dimension.
doi:10.3390/ecsa-1-e005 fatcat:wkmu5vrqsva43e5bxn7fm3mknm