Prof. Ryan Hayward
Ryan Hayward is a Professor of Polymer Science and Engineering at the University of Massachusetts Amherst. He received degrees in Chemical Engineering from Princeton University (B.S.E, 1999) and the University of California, Santa Barbara (Ph.D., 2004), and was a post-doctoral fellow in Engineering and Applied Sciences at Harvard University from 2004-2005. His group’s research covers a variety of topics in polymers and soft materials, with a focus on thin films and interfaces. Recent areas of interest include swelling-induced deformation of constrained and micro-patterned stimuli-responsive gels, and solution state self-assembly of polymer and particle-based nanostructures.
Title: Continuous reconfiguration of elastic plates and shells
Abstract: Geometrically-programmed buckling transitions of thin elastic structures driven by spatially non-uniform stresses or material characteristics provide almost unlimited opportunities to control the shapes, properties, and motion of materials. However, most work to date on such shape-programmable materials has focused on systems capable of morphing between two, or at most several, distinct states. Our group has recently been interested in structures that allow continuous reconfiguration between a wide variety of shapes. In one example, we focus on photo-responsive swelling of thin hydrogel plates, and in particular, how photothermally addressable nanocomposite gels enable rapid and highly reversible shape changes and motion. In a second example, we study the multi-stability of elastic shells patterned with creases, with a special interest in the remarkable shape-reconfigurability offered by `bendy straws' and related architectures.
A317, Conte Research Center
120 Governors Drive
Amherst, MA 01003