1. Department of Mechanical Engineering Stanford University Stanford CA 94305 USA
2. Department of Mechanical Engineering University of California Merced Merced CA 95340 USA
3. School of Mechanical Engineering Chung‐Ang University Seoul 06974 South Korea
4. Department of Mechanical and Aerospace Engineering University of California Irvine Irvine CA 92697 USA
5. Department of Mechanical Engineering and Materials Science Washington University St. Louis MO 63130 USA
6. Electronics and Communication Engineering Department Suzhou Vocational Institute of Industrial Technology Suzhou 215021 China
7. Advanced Technology Programs Raytheon Integrated Defense Systems Sudbury MA 01776 USA