Spinbeläggning

Spinbeläggning, also known as spin coating or centrifugal coating, is a widely used method for applying thin, uniform films of liquid materials onto flat substrates. The process involves dispensing a small amount of the liquid onto the center of a rotating substrate. As the substrate spins at high speed, centrifugal force causes the liquid to spread outwards, thinning it into a uniform layer. The final thickness of the film is determined by a combination of factors, including the viscosity and surface tension of the liquid, the rotational speed, and the duration of the spin.

This technique is particularly valuable in research and industrial settings for creating precisely controlled thin films. It is commonly employed in the fabrication of microelectronic devices, where uniform layers of photoresist or dielectric materials are essential. In the field of optics, spin coating is used to produce antireflective coatings and optical filters. It also finds applications in the creation of sensors, solar cells, and for surface modification in various scientific disciplines. The simplicity, cost-effectiveness, and ability to achieve high uniformity make spinbeläggning a popular choice for many thin film deposition needs. The process typically involves a spin coater machine, which provides precise control over rotational speed and acceleration. After the spin cycle, the coated substrate may undergo further processing steps, such as drying or curing, to solidify the film.