Ion beam modification of residual stress gradients in thin...

Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering

Reexamination Certificate

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C204S192320, C204S298360, C216S066000

Reexamination Certificate

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06929721

ABSTRACT:
Method and apparatus for reducing the curvature of a micromachined structure having lamella (12). Surface treatment by an ion beam (30) of the lamella (12) such as by sputtering removes regions of stress allowing the lamella (12) to return to a planar condition. The resulting outer surface is made suitable for use as a reflector and other purposes needing a substantially planar surface.

REFERENCES:
patent: 4756796 (1988-07-01), Saitou
patent: 5922212 (1999-07-01), Kano et al.
patent: 6529311 (2003-03-01), Bifano et al.
patent: 198 14 760 (1999-10-01), None
patent: 19814760 (1999-10-01), None
patent: 63-84114 (1988-04-01), None
patent: 3-103391 (1991-04-01), None

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