Experimental micromachining of silicon with Nd-YAG laser

Mon, Thet Thet and Khairul Fikri, Muhammad and Asnul Hadi, Ahmad and Zazuli, Mohid (2011) Experimental micromachining of silicon with Nd-YAG laser. In: International Conference on Experimental Mechanics (ICEM 2010), 29 November - 1 December 2010 , Kuala Lumpur. pp. 244-248., 83. ISSN 16609336 ISBN 978-303785221-7

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This research centers on experimental laser-micromachining of silicon using solid state pulsed Nd:YAG laser. The laser is equipped with 3-axis controllers with resolution of 1 μm. The main objective is to find out the possibility of using this laser machining system to fabricate a micro feature on silicon. Simple straight lines were generated on silicon surface. The two process parameters – the laser traverse speed and pulse energy- were considered in the experimental design. Two forms of experiments were carried out: (1) processing with air assist gas and (2) processing without the assist gas using the same experimental design. Standard full factorial design of 3k was used to design the experiments. Repeatability of the machine and nonlinearity were taken into account in the design by adding center points. Sequence of experiments was also randomized. Statistical analysis of experimental results could not show any significant factor. However, the surface plot did provide general information on desirable regions for the response line width, which was consistent with the published results. Micrograph study of the featured lines revealed that the laser processing without the assist gas produced preferable results.

Item Type: Conference or Workshop Item (Keynote)
Additional Information: Indexed by Scopus, WOS
Uncontrolled Keywords: Experimental design; Laser processing; Micro machining; Nd-YAG; Silicon
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 06 Feb 2020 08:27
Last Modified: 06 Feb 2020 08:27
URI: http://umpir.ump.edu.my/id/eprint/26175
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