Spin coaters are experimental devices used for film preparation and are widely applied in the fields of semiconductors, optoelectronics, and biomedicine. The working principle involves adding liquid samples onto a rotating substrate surface, using centrifugal force to evenly distribute the sample across the substrate, resulting in a uniform film. These devices typically consist of a rotating stage, control system, spray head, and motor, and can achieve uniform film coating at high speeds.

Different chamber materials have different characteristics and applications:

Stainless Steel: Known for its excellent corrosion resistance and aesthetic appeal, it is widely used in vacuum equipment and semiconductor device fabrication. Stainless steels, especially types 304 and 316, are favored for their strength and corrosion resistance. The surface finish of stainless steel plays a significant role in its corrosion resistance and appearance.

Acrylic: Acrylic is lightweight, cost-effective, and easy to mold. It has a wide range of applications in advertising, transportation, and medical fields due to its hardness and chemical resistance. Acrylic can be processed through casting, injection molding, extrusion, and thermoforming.

Polypropylene (PP): A linear polymer with high density, no side chains, and high crystallinity, known for its excellent overall performance. Common PP products include basins, buckets, furniture, films, etc. It has good chemical and oil resistance. PP material is microwave-safe for use in food containers, but caution is needed regarding temperature limits as substances may leach out at high temperatures.

PTFE (Polytetrafluoroethylene): Referred to as the "king of plastics," it has exceptional heat resistance, corrosion resistance, low friction coefficient, and excellent electrical insulation. PTFE is widely used in high-frequency radio, sliding bearings, sealing materials, and non-stick cookware coatings. While PTFE's processing performance is not as good as other materials, its physical and chemical properties are extremely superior.

Aluminum Alloy: Used for its lightweight and good thermal conductivity, making it ideal for vacuum chambers, especially in applications requiring good thermal performance and lightweight design.