Radiation absorbing surfaces
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United States of America Patent
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-
Apr 15, 1986
Issued Date -
N/A
app pub date -
Mar 10, 1983
filing date -
Jun 29, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A substantially radiation absorbing layer of metal having a microstructured surface characterized by a plurality of randomly positioned discrete protuberances of varying heights and shapes, which protuberances have a height of not less than 20 nanometers nor more than 1500 nm, and the bases of which contact the bases of substantially all adjacent protuberances is disclosed. The metal layer, which may be a coating on a variety of substrates, is useful as a radiation absorber (particularly solar). A method is disclosed for producing such layers.
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