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Micromachined metal thin-film pressure sensor suitable for batch process

Micromachined metal thin-film pressure sensor suitable for batch process

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Description of the fabrication and characteristics of a micromachined metal thin-film pressure sensor for working at high temperatures is presented. The proposed pressure sensor consists of a Cr thin-film, patterned on a Wheatstone bridge configuration, sputter-deposited onto thermally oxidised Si membranes with an Al interconnection layer. This sensor has the advantages of high sensitivity, high temperature operation and is suitable for batch process.

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