| Affiliation: | 1. Department of Engineering Mechanics and Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China;2. NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science & Technology (NTNU), Trondheim 7491, Norway;3. Department of Chemistry, Tsinghua University, Beijing 100084, China;1. School of Physics Optoelectronic Engineering, Xidian University, Xi?an, Shaanxi 710071, China;2. School of Photoelectric Engineering, Xi?an Technological University, Xi?an 710021, China |
