Biocompatible Piezoelectric Materials and Composites for Biomedical Applications

21st March 2024

Timing : 1 pm EST

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For a list of all talks at the NanoBio seminar Series Spring'24, see here


Nanogenerator (NG) has been considered as a promising solution to biomechanical energy harvesting inside human body. So far, many technology innovations have advanced the NG technology toward a broad range of biomedical applications. Fundamentally, materials design and engineering draw the boundary where this technology may advance. In this talk, I introduce our most recent development of piezoelectric materials and composites that are particularly designed for implantable NG applications. First, I present our wafer-scale approach to creating piezoelectric biomaterial thin films based on γ glycine crystals. The self-assembled sandwich film structure enabled both strong piezoelectricity and largely improved flexibility. Then, new ferroelectric composites are presented as a new material used in 3D printing for directly manufacturing of piezoelectric architectures with tunable piezoelectric and mechanical properties. Toward the end, novel applications of implantable piezoelectric materials are introduced, which enable self-sustainable electrical energy generation and closed-loop electrostimulations for a variety of biomedical devices.



Snow
Dr. Xudong Wang
Grainger Institute for Engineering Professor
Department of Materials Science and Engineering
University of Wisconsin-Madison

Prof. Xudong Wang is the Grainger Institute for Engineering Professor in the department of Materials Science and Engineering at University of Wisconsin – Madison. Dr. Wang received his PhD degree in Materials Science and Engineering from Georgia Tech in 2005. His current research interests include studying the growth mechanisms and developing assembly techniques of functional biomaterials; developing advanced nanomaterials and nanodevices for mechanical energy harvesting from human activities for biomedical applications; and understanding the coupling effect between piezoelectric polarization and semiconductor functionalities. He has won number of prestigious national and international awards, including PECASE, NSF CAREER Award, DARPA Young Faculty Award, etc. He has published more than 170 papers on peer-reviewed journals, including Science, Nature, Nature Energy, etc. His current h-index is 85.