* Corresponding authors

^a Department of Mechanical Engineering, University of South Carolina, SC 29208, USA
E-mail: hu@sc.edu

^b National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China

^c Department of Computer Science and Engineering, University of South Carolina, Columbia, SC 29208, USA