The Daniel Guggenheim School of Aerospace Engineering
invites you to attend the talk
"Mechanics of Advanced Materials and Multifunctional Structures: From Energy Storage to Flexible Electronics"
Dr. Xueju “Sophie” Wang
Assistant Professor | Department of Mechanical and Aerospace Engineering
University of Missouri
Tuesday, January 21
11 am - 12 pm
About the Talk:
Lightweight, multifunctional materials and structures that can perform engineering functions (such as sensing, diagnosis, and on-demand shape reconfiguration) beyond load carrying are of increasing interest for aerospace vehicle applications. In addition, there is a growing interest for structural integration of power harvest/storage capabilities for self-sustaining systems in air transport and autonomous vehicles, where durable, high-performance energy storage solutions are essential. In this talk, I will focus on the mechanics of high-damage-tolerance rechargeable battery materials and multifunctional 3D structures for the development of autonomic, adaptive, and self-sustaining vehicles. I will first present the investigation of deformation and fracture in high-capacity electrode materials, silicon and germanium, for their use in next-generation lithium-ion batteries. Novel in situ and ex situ experiments using nanoindentation, Michaelson Interferometer, and high-resolution transmission electron microscopy were designed to study the mechanical deformation and failure in lithiated silicon and germanium composites. The fundamental findings of the work provide important insights for the multiphysics modeling and the design of high-performance lithium-ion batteries for vehicle electrification.
For the second part of my talk, I will discuss exploiting structural buckling to create previously inaccessible, flexible, multifunctional 3D mesoscale structures and electronics from thin-film materials, including polymers, metals, semiconductor silicon, and a heterogeneous combination of these materials. Both fundamental buckling mechanics and a wide range of assembled 3D functional structures, including shape-programmable 3D structures and structures with multimodal sensing capabilities, will be presented. The studies of multifunctional structures and energy-storage solutions provide important insights for the development of autonomic, adaptive, and self-sustaining vehicles. I will conclude my talk by briefly discussing new opportunities in the mechanics of multifunctional materials and structures for aerospace applications.
About the Speaker:
Dr. Xueju “Sophie” Wang is currently an assistant professor in the Department of Mechanical and Aerospace Engineering at the University of Missouri, Columbia (Mizzou). She obtained her Ph.D. degree in Mechanical Engineering at the Georgia Institute of Technology in 2016 and did her postdoc in Materials Science and Engineering at Northwestern University from 2016 to 2018. Her research group focuses on the mechanics of advanced materials and multifunctional structures for applications from energy storage to adaptive structures and flexible electronics. She is the recipient of the ASME Haythornthwaite Research Initiation Award, 1907 Women in Engineering Faculty Award, Coulter Program Award, Richard Wallace Faculty Incentive Grant Award, and Gary L. Cloud Scholarship Award (from Society for Experimental Mechanics) in recognition of her research. Her current research program is supported by the Office of Navy Research, Haythornthwaite Foundation, Wallace H. Coulter Foundation, Mizzou Alumni Association, and Mizzou Research Council.