Absorptive coating for the reduction of the reflective cross section of metallic surfaces and control capabilities therefor
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United States of America Patent
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Oct 5, 1982
Grant Date -
N/A
app pub date -
Sep 10, 1980
filing date -
Sep 10, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An absorptive coating for reduction of the reflective cross section of a metallic surface is provided which includes a layer of 'N' doped material adjacent the metal surface, the N doped material having a characteristic of increasing semiconductor conductivity from the outboard surface junction of the material to the boundary of the metallic surface, a second layer of 'P' doped material having a characteristic of increasing semiconductor conductivity from its outboard surface boundary to its junction with the N doped material inboard of it. In the preferred embodiment, a third layer of P material is placed outboard of the second layer. The first and second layers further have electrical connections operatively associated with them, so that an applied voltage may be utilized to vary the electrical characteristics of the coating.
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