1. Research Laboratory of Electronics Massachusetts Institute of Technology Cambridge MA 02139 USA
2. Mechanical Engineering University of California Berkley Berkeley CA 94704 USA
3. State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai 200240 China
4. Tsinghua–Berkeley Shenzhen Institute Shenzhen 518055 China
5. The Molecular Foundry Lawrence Berkeley National Lab Berkeley CA 94704 USA
6. Advanced Light Source Lawrence Berkeley National Lab Berkeley CA 94704 USA
7. U.S. Army RDECOM AMRDEC Redstone Arsenal AL 35898 USA