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Ultrasonics and Optics Would Control Shot SizeFeedback system assures production of silicon shot of uniform size. Breakup of silicon stream into drops is controlled, in part, by varying frequency of vibrations imparted to stream by ultrasonic transducer. Drop size monitored by photodetector. Control method particularly advantageous in that constant size is maintained even while other process variables are changed deliberately or inadvertently. Applicable to materials other than silicon.
Document ID
19830000107
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Morrison, A. D.
(CALTECH)
Date Acquired
August 11, 2013
Publication Date
August 1, 1983
Publication Information
Publication: NASA Tech Briefs
Volume: 7
Issue: 3
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
NPO-15608
Accession Number
83B10107
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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