1. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
2. School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA
3. Woodruff School of Mechanical Engineering and the Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
4. Woodruff School of Mechanical Engineering and the School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA