1. Anhui Province Key Lab of Aerospace Structural Parts Forming Technology and Equipment, Institute of Industry and Equipment Technology Hefei University of Technology Hefei 230009 China
2. Caltech Optical Imaging Laboratory Andrew and Peggy Cherng Department of Medical Engineering California Institute of Technology Pasadena CA 91125 USA
3. CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230027 China