Fabrication and bonding of single crystal silicon
Roger A. Paquin, Douglas R. McCarter and Eloise McCarter
McCarter Machine, Inc., P.O. Box 520, Deer Park, TX 77536
Single Crystal Silicon (SCSi) is a versatile material and is seeing increased use for mirrors and telescopes. In the past, small boule size and the brittle nature of the material have restricted its applications, but that is no longer the case. After much development and testing, we can now fabricate SCSi with near zero surface damage/residual stress and utilize the in-house developed bonding methods to fabricate much larger substrates than available SCSi boules. More importantly, these bonding techniques enable us to bond-in threaded metal inserts for attachments, thereby eliminating the risk of putting threads directly into SCSi components.
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