MSE Seminar: Kirgami: Programming, Cutting and Folding from Microscale to Meter Scale
Speaker: Shu Yang, Professor & Chair, MSE, University of Pennsylvania
Title: Kirgami: Programming, Cutting and Folding from Microscale to Meter Scale
Programmable shape-shifting materials can take different physical forms to achieve multifunctionality in a dynamic and controllable manner. By introducing holes and cuts in 2D sheets macroscopically, we demonstrate dramatic shape change and super-conformability via expanding or collapsing of the hole arrays without deforming individual lattice units. When choosing the cuts and geometry correctly, we show folding into the third dimension, known as kirigami. By programming the geometry of cuts and folding angles, we explore their potential applications in solar shading, water harvesting, super-stretchable and shape conformable medical devices.
Shu Yang is a Professor and Chair of the Department of Materials Science & Engineering, and Professor of Chemical & Biomolecular Engineering at University of Pennsylvania. Her group is interested in synthesis, fabrication, and assembly of soft materials including polymers, liquid crystals, and colloids and their composites, and use geometry to create highly flexible, stretchable, super-conformable, and foldable materials and devices. Her lab explores the potential applications of the smart and bioinspired materials, including self-cleaning coatings, dry adhesives, smart windows, sensors, actuators for robotics, and biomedical devices. Yang received her B.S. degree from Fudan University, and Ph. D. degree from Cornell University. She worked at Bell Laboratories, Lucent Technologies as a Member of Technical Staff before joining Penn. She received George H. Heilmeier Faculty Award for Excellence in Research from Penn Engineering. She is a Fellow of Materials Research Society (MRS), Division of Soft Matter (DSOFT) from American Physical Society (APS), Division of Polymeric Materials: Science and Engineering from American Chemical Society (ACS), and National Academy of Inventors. She was elected as Innovators under 35 by MIT's Technology Review.