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Micromachines 2017, 8(2), 48;

Laser Fabrication of Miniature Internal Thread in Glass Substrate

Department of Mechanical Engineering, Shibaura Institute of Technology, Tokyo 135-8548, Japan
Author to whom correspondence should be addressed.
Received: 21 December 2016 / Revised: 1 February 2017 / Accepted: 3 February 2017 / Published: 8 February 2017
(This article belongs to the Special Issue Ultrafast Laser Fabrication for Lab-on-a-Chip)
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Miniature internal threads (tapped holes) of S0.5 were fabricated in a glass substrate. Water-assisted laser drilling was applied for fabrication of the threads of S0.5 standard using a subnanosecond laser as a light source. The landscape of the inner surface of the threads was measured by a laser microscope, and showed reasonable agreement with the desired standard. As a proof of concept, a commercial external screw was fitted to the fabricated internal thread. View Full-Text
Keywords: subnanosecond laser; miniature thread; glass; water-assisted laser drilling subnanosecond laser; miniature thread; glass; water-assisted laser drilling

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Degawa, H.; Urano, N.; Matsuo, S. Laser Fabrication of Miniature Internal Thread in Glass Substrate. Micromachines 2017, 8, 48.

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