1. School of Mechatronics Engineering Harbin Institute of Technology Harbin Heilongjiang P. R. China
2. School of Microelectronics Northwestern Polytechnical University Xi'an P. R. China
3. Research & Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen P. R. China
4. Yangtze River Delta Research Institute of NPU Taicang P. R. China