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Laser Machining Processes - Laser Etching
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Laser etching is a process used to permanently mark or engrave components made from a wide variety of materials with codes, serial numbers, logos and patterns. Material is removed very accurately and to a controlled depth with little or no heat affected area.
The most common application for laser etching is in product marking, but because of the accuracy and depth control, the process is well suited to producing intricate 2D cavities in moulding and stamping tools, and micro-fluidic channels.
A newer application for laser etching is in the field of selective etching to produce finely detailed cutouts in thin sheet metal. Laser etching also has application in fabrication of silicon wafers, mico fluidic channels, MEMS structures and nano fabrication. In these techniques, the laser etch process is used to etch away the metallic or silicon structure selectively in layers in a process similar to chemical etching with photo resist.
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