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Ryan C. Hayward


Assembly of polymer and particle-based nanostructures; mechanics and instabilities of soft active materials

Current Research
Our work focuses on tailored nanoscale assemblies of polymers and nanoparticles, and on stimuli-responsive materials that can be dynamically reconfigured to change their structures and properties. With regards to personalized health monitoring, we have developed a variety of new approaches to nano- and micro-scale sensors for chemical, biomolecular, and mechanical cues, for example, based on photonic multilayers based on photo-crosslinkable copolymers, and on mechanical buckling instabilities of soft polymer films. We are interested in developing fundamentally new sensing modalities, and on integrating them with other micro-scale platforms, including microfluidic systems and microelectromecanical (MEMS) devices.

Learn more at www.pse.umass.edu/rhayward/

Academic Background

  • BSE Princeton University, 1999
  • PhD UC Santa Barbara, 2004
W. Huang, R.C. Hayward, “Orthogonal Ambipolar Semiconductors with Inherently Multi-Dimensional Response for the Discriminative Sensing of Chemical Vapors”, ACS Applied Materials & Interfaces, 10, 33353–33359 (2018)
T. Ouchi, J. Yang, Z. Suo, R.C. Hayward, "Effects of stiff film pattern geometry on surface buckling instabilities of elastic bilayers", ACS Applied Materials & Interfaces, 10, 23406–23413 (2018).
S. Sundaram, D.S. Kim, M.A. Baldo, R.C. Hayward ,W. Matusik, "3D-Printed Self-Folding Electronics" ACS Applied Materials and Interfaces, 9, 32290 - 32298 (2017)
S.-J. Jeon, A.W. Hauser, R.C. Hayward, “Shape Morphing Materials from Stimuli-Responsive Hydrogel Hybrids”, Accounts of Chemical Research, 50, 161-169 (2017)
W. Huang, J.C. Markwart, A.L. Briseno, R.C. Hayward, “Orthogonal Ambipolar Semiconductor Nanostructures for Complementary Logic Gates”, ACS Nano, 10, 8610-8619 (2016).
B. Xu, D. Chen, R.C. Hayward, “Mechanically Gated Electrical Switches by Creasing of Patterned Metal/Elastomer Bilayer Films” Advanced Materials, DOI: 10.1002/adma.201400992 (2014).
D. Chen, L. Jin, Z. Suo, R.C. Hayward, "Controlled formation and disappearance of creases", Materials Horizons, 1, 207-213 (2014).
B. Xu, R.C. Hayward, "Low voltage switching of crease patterns on hydrogel surfaces", Advanced Materials, 25, 5555-5559 (2013).
K. Heo, C. Miesch, T. Emrick, R.C. Hayward, "Thermally reversible aggregation of gold nanoparticles in polymer nanocomposites through hydrogen bonding", Nano Letters, 13, 5297-5302 (2013).
J.Kim, J.A. Hanna, M. Byun, C.D. Santangelo, R.C. Hayward, “Designing responsive buckled surfaces by halftone gel lithography”, Science, 335, 1201-1205 (2012).
M.C. Chiappelli, R.C. Hayward, "Photonic multilayer sensors from photo-crosslinkable polymer films", Advanced Materials, 24, 6100-6104 (2012).
Contact Info

Polymer Science & Engineering
A314 Conte Research Center
120 Governors Drive
Amherst, MA 01003

(413) 577-1317