Polymer and Organic Materials Commons^™

Microscale Contact And Friction Of Low Modulus, Lightly Crosslinked Polydimethylsiloxane, Justin Glover

Theses and Dissertations--Chemical and Materials Engineering

Friction and adhesion of soft materials are important for pressure sensitive adhesives, biomaterials, and soft robotics; however, the behavior on the microscale is not fully understood. When two objects come into contact, their interactions are usually mediated by small contact points due to surface roughness. At the microscale size, surface forces can deform soft materials to minimize energy by increasing the contact area, which is balanced by the elastic deformation of the polymer network. However, for soft, crosslinked materials with a modulus below ~100 kPa, it is challenging to predict the behavior with prior contact and friction models. Additionally, lightly …