MEMS AND NEMS STRUCTURES
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United States of America
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Issued Date -
Feb 6, 2025
app pub date -
Jun 7, 2024
filing date -
Jun 7, 2024
priority date (Note) -
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status (Latency Note)
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Abstract
An electromechanical systems structure including: providing a stack, including a structural layer extending in a plane, a sidewall layer including a first portion lying in a plane parallel to the structural layer plane and a second portion lying in a plane transverse to the structural layer plane, an etch-stop layer, positioned between the sidewall layer and the structural layer, including an etch-selectivity different from an etch-selectivity of the structural layer and an etch-selectivity of the sidewall layer, and a mold comprising a wall parallel to the sidewall layer's second portion; etching the sidewall layer's first portion to expose the etch-stop layer; removing the mold; etching the etch-stop layer such that the sidewall layer's second portion masks a portion of the etch-stop layer; removing the sidewall layer's second portion; and etching the structural layer such that the portion of the etch-stop layer masks a portion of the structural layer.
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