Polymer Microfabrication: Techniques and Applications

This lecture covers various micromoulding technologies such as casting, injection molding, and hot embossing used in polymer microfabrication. It explains the process of replica molding or casting of PDMS, emphasizing the fabrication steps and applications. The instructor discusses the challenges and advantages of each technique, highlighting the importance of precise control over parameters like temperature and pressure. Additionally, the lecture delves into surface treatments for enhancing bonding between polymers, including plasma treatment and solvent softening. The presentation also explores advanced topics like chaotic mixing using source-sink microfluidic flows and localized bonding methods like microwave welding, ultrasonic welding, and laser welding.