The Cotton Candy Effect
The cotton candy effect is a common issue in the semiconductor manufacturing process where dried material comes off the substrate in string-like filaments instead of droplets. To address this issue, process parameters and environmental factors should be adjusted. Optimization testing is required to fine-tune the process until the cotton candy effect is eliminated. The Cotton […]
Spin Chucks for Square Substrates
Spin-coating is a process used to evenly distribute material on a substrate by spinning it at a high speed. Round substrates are commonly used because their smooth edges create minimal turbulence, resulting in uniform evaporation rates. However, square and rectangular substrates create unique challenges due to increased air turbulence and can result in uneven coating […]