etch

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etch

[ech]
(graphic arts)
To incise lines on a plate of metal, glass, or other material by covering it with an acid-resistant coating, scratching through the coating, and then permitting an acid bath to erode exposed parts of the plate.
(metallurgy)
To corrode the surface of a metal in order to reveal its composition and structure.

etch

1. To cut away the surface of glass or metal with a strong acid or by abrasive action, usually in a decorative pattern.
2. To remove the surface of cast stone with acid to expose the aggregate.
3. To alter the surface texture of porcelain enamel by chemical attack.

etch

To create a design in a material by digging out the material. The circuit designs on printed circuit boards and chips are etched by acid. See chip and printed circuit board.
References in periodicals archive ?
This membrane then needs to be etched from the wafer frontside to define active areas for its release.
Etched to one thickness, the porous silicon cancels all but green light.
Figure 6b shows a higher magnification of a specimen etched with 4% nital.
To mass produce more complex, precisely etched chips, companies need a better understanding of plasmas.