Wrinkling Polymers for Surface Structure Control and Functionality

Abstract

Surface wrinkling offers a unique, novel, and robust approach to define the topography of polymer surfaces. Not only can structure be defined with discrete, predictable length scales, but the direct control of surface properties can be achieved. Significant efforts have been demonstrated, but this field is only emerging in the broad context of a new design paradigm for polymer surfaces and many challenges remain. In this chapter, we present a brief overview of the general mechanics that govern surface wrinkling and an experimental discussion on strategies that use swelling of a constrained elastomer to generate wrinkled surfaces. We discuss factors that dictate the length scale, alignment, and general morphology of wrinkled surfaces, and we end with an overview of potential applications for surfaces defined by this strategy.