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A new method for fabrication of diamond-dust blocking filtersThermal embedding of diamond dust onto a polyethylene-coated Al plate has been used to make a blocking filter for FIR applications. The Al plate is sandwiched between two Mylar 'blankets' and the air between the layers is removed by means of a small vacuum pump. After the polyethylene is heated and softened, the diamond dust is applied to the polyethylene coating using a brush. The optimum diamond dust grain sizes corresponding to polyethylene layer thicknesses of 9-12 microns are given in a table, and the application of the blocking filter to spectrometric measurements in the FIR is described. An exploded view diagram of the layered structure of the blocking filter is provided.
Document ID
19860041033
Document Type
Reprint (Version printed in journal)
Authors
Collard, H. R.
(NASA Ames Research Center Moffett Field, CA, United States)
Hogan, R. C.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Infrared Physics
Volume: 26
ISSN: 0020-0891
Subject Category
Mechanical Engineering
Accession Number
86A25771
Distribution Limits
Public
Copyright
Other

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