1. College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
2. Key Laboratory of on Site Processing Equipment for Agricultural Products, Ministry of Agriculture and Rural Affairs, Zhejiang University, Hangzhou 310058, China
3. Electrical and Computer Engineering Department, The University of Utah, Salt Lake City, Utah 84112, United States
4. Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77251-1892, United States
5. Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77251-1892, United States
6. The Smalley-Curl Institute, Rice University, Houston, Texas 77251-1892, United States
7. Department of Physics and Astronomy, Rice University, Houston, Texas 77251-1892, United States
8. Zhejiang A&F University, Hangzhou 311300, China