Radiation absorbing surfaces

Details Radiation absorbing surfaces Radiation absorbing surfaces

1981-06-29

1983-08-02

Hoffman, James R.

Coating processes

Coating has x-ray, ultraviolet, or infrared properties

204192SP, 2505151, 126449, B05D 502, B05D 714

Patent

active

043966438

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.

REFERENCES:
patent: 2891879 (1959-06-01), Rohrer
patent: 3666527 (1972-05-01), Feldstein et al.
patent: 3690944 (1972-09-01), Feldstein et al.
patent: 4138262 (1979-02-01), Wacks et al.
patent: 4148294 (1979-04-01), Scherber et al.
patent: 4190321 (1980-02-01), Dorer et al.
patent: 4252843 (1981-02-01), Dorer et al.

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