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Spin coating

Surface coating operations in which a workpiece is rotated while liquid paint is dropped and spread over its surface to create a thin surface coating.

Beskrivning
Illustration of Spin coating

The process

The workpiece is clamped, and the surface coating agent is dropped into the center of rotation on its surface. The workpiece is then rotated drawing the paint by centrifugal force to the outer edge and makes the whole surface covered by the paint. The thickness of the final surface layer can be controlled by the viscosity of the liquid, the table rotational speed and the time that the rotation is in progress.