LIGA, from the German Lithographische Galvano Abformung (galvanic structuring by lithography) is a process used for the fabrication of 3D nickel microstructures.
The principle: A photosensitive polymer layer is deposited on a substrate by spinning. This resin will be used to make a mould in which the nickel will be deposited.
This technology allows us to achieve precision in the micron range in terms of both shape and thickness. The aspect ratio is very interesting because it is possible, for example, to obtain a structure of 100 µm for a thickness of 300 µm.
It can be used in a wide range of applications such as watchmaking components, micromechanics, microelectronics and many other fields.