Soft polymer materials show both liquid-like and solid-like surface properties. When the crosslinking density is low, the material becomes compliant and can heal spontaneously from fractures. However, it is experimentally challenging to image such dynamic processes in-situ. In this project, the student will study self-healing process at soft interfaces by using laser confocal microscopy. The study will quantitatively the unique mechanical features of soft materials and benefit the future design of functional soft interfaces.