THIN FILM SENSOR EXHIBITING ENHANCED SENSITIVITY
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United States of America
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Mar 13, 2025
app pub date -
Jul 15, 2022
filing date -
Jul 15, 2022
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Abstract
This invention relates to a coating system to be used as thin film sensor, comprising a piezoresistive sensor element, wherein the piezoresistive sensor element is a layer embedded in the coating system, wherein the coating system is deposited on a surface of a substrate, preferably the substrate being a component or a tool or a part of a component or a part of a tool, wherein the piezoresistive sensor element comprises at least one hydrogen free tetrahedral amorphous carbon coating doped with X, i.e. a ta-C:X coating layer, where X is one or more chemical elements selected from the elements groups 13 and 15 of the periodic table of elements, preferably X is one or more from B, Al, Ga, In, Tl, N and P, wherein the ta-C:X coating layer exhibits an anisotropic gage factor.
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