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What is LIGA ?Lithographie، Gablvanoformung، Abformung
Liga (LIGA stands for the German words indicative of different stages of the building process, i.e. Lithographie, etc. Gablvanoformung, etc. Abformung (lithography, water, Curry and theming). Liga a method for the production of fragments with the structure of the . The smallest dimension of the structure produced by this method can be up to 0/2 micrometers in length and a height of up to 3 mm and aspect ratios up to 50. With this method, can be fragments of plastic, metal or ceramic construction. LIGA technology, in micro, especially micro-optics, and mostly in the event that the aspect ratio of high need. used.
This method in the early 80's, was at the center of nuclear research of the former Karlsruhe in a team to manage, Wolfgang and Erwin Willy Becker, for the production of fragments with the application in a method of enriching uranium was created.
the most important stages of construction with the method of Liga include:
the design and construction of the mask, the primary, an absorbent layer of gold to a height of approximately 2 μm, with the help of layout and plated with gold.
transcription mask, the primary mask, the absorbent layer of gold with a height of about 25 micrometers, with the help of layout journalism deep beam and plated with gold.
transcription mask, on a layer of 100 to 3000 plastic design method of journalism, deep beam and dissolve the parts of the light seen in the chemical solution.
plating such as gold, nickel or copper in the inside of the plastic mold to create the structure of the micro-or an embossed seal of the desired structure.
the mass production of the structure of the micro with the transfer of the structures on the stamp on the plastic or other material at high temperature....