Dr. Xudong Wang is an assistant professor in the department of Materials Science and Engineering at University of Wisconsin -- Madison. He received his PhD degree from the school of Materials Science and Engineering at Georgia Institute of Technology in 2005. His current research interests include studying the nanometer scale piezoelectric properties; understanding the coupling effect between piezoelectric polarization and semiconductor functionalities; and investigating the growth mechanisms and developing assembly techniques of oxide nanostructures for mechanical and solar energy harvesting.