etching compound

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• etching — /ech ing/, n. 1. the act or process of making designs or pictures on a metal plate, glass, etc., by the corrosive action of an acid instead of by a burin. 2. an impression, as on paper, taken from an etched plate. 3. the design so produced. 4. a… …   Universalium

• Photoengraving — also known as photo chemical milling is a process of engraving using photographic techniques. The most common type of photoengraving involves using a material that is photosensitive and resistant to acids or other etching compounds. This material …   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

• Ruthenium — (pronEng|ruːˈθiːniəm) is a chemical element that has the symbol Ru and atomic number 44. A rare transition metal of the platinum group of the periodic table, ruthenium is found associated with platinum ores and used as a catalyst in some platinum …   Wikipedia

• Wafer (electronics) — Polished 12 and 6 silicon wafers. The flat cut into the right wafer indicates its doping and crystallographic orientation (see below) …   Wikipedia

• Electroetching — is an etching process that involves the use of chemicals, along with the employment of direct electric current and is done by applying electrochemical etching solution to a material layer, preferably a metal layer, on a workpiece, in the presence …   Wikipedia

• Ohmic contact — An ohmic contact is a region on a semiconductor device that has been prepared so that the current voltage (I V) curve of the device is linear and symmetric. If the I V characteristic is non linear and asymmetric, the contact is not ohmic, but is… …   Wikipedia

• Pad printing — is a printing process that can transfer a 2 D image onto a 3 D object. This is accomplished using an indirect offset (gravure) printing process that involves an image being transferred from the printing plate (cliché) via a silicone pad onto a… …   Wikipedia

• Epitaxy — refers to the method of depositing a monocrystalline film on a monocrystalline substrate. The deposited film is denoted as epitaxial film or epitaxial layer. The term epitaxy comes from a Greek root ( epi above and taxis in ordered manner ) which …   Wikipedia

• Copper(II) sulfate — Crystal of CuSO4·5H2O Anhydrous CuSO4 powder …   Wikipedia

• Phosphoric acid — This article is about orthophosphoric acid. For other acids commonly called phosphoric acid , see Phosphoric acids and phosphates. Phosphoric acid …   Wikipedia