Zhengguo Xiao1,2†, Yongbo Yuan1,2†, Yuchuan Shao1,2†, QiWang1,2, Qingfeng Dong1,2, Cheng Bi1,2, Pankaj Sharma2,3, Alexei Gruverman2,3 and Jinsong Huang1,2*
1 Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0656, USA.
2 Nebraska Center for Materials, Nanoscience, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0298, USA.
3 Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0299, USA.
† These authors contributed equally to this work.