1. Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA.
2. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
3. Key Laboratory of Microelectronic Devices and Circuits (MOE), School of Integrated Circuits, Peking University, Beijing 100871, P. R. China.
4. Applied Science and Technology Graduate Group, University of California, Berkeley, CA, 94720, USA.
5. The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
6. East Bay Innovation Academy, 3800 Mountain Blvd., Oakland, CA 94619, USA.
7. Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA 94720, USA.
8. Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA.
9. Heat Island Group, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.