etch undercutting
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Etching (microfabrication) — Etching tanks used to perform Piranha, Hydrofluoric acid or RCA clean on 4 inch wafer batches at LAAS technological facility in Toulouse, France Etching is used in microfabrication to chemically remove layers from the surface of a wafer during… … Wikipedia
Microelectromechanical systems — (MEMS) (also written as micro electro mechanical, MicroElectroMechanical or microelectronic and microelectromechanical systems) is the technology of very small mechanical devices driven by electricity; it merges at the nano scale into… … Wikipedia
photoengraving — /foh toh en gray ving/, n. 1. a photographic process of preparing printing plates for letterpress printing. 2. a plate so produced. 3. a print made from it. [1870 75; PHOTO + ENGRAVING] * * * Any of several processes for producing printing plates … Universalium
Photolithography — For earlier uses of photolithography in printing, see Lithography. For the same process applied to metal, see Photochemical machining. Photolithography (or optical lithography ) is a process used in microfabrication to selectively remove parts of … Wikipedia
Mechanical filter — Figure 1. A mechanical filter made by the Kokusai Electric Company intended for selecting the narrow 2 kHz bandwidth signals in SSB radio receivers. It operates at 455 kHz, a common IF for these receivers, and is dimensioned 45×15×15 mm ( … Wikipedia
