Affiliation: | ZHAO SuFen1,SUN Qian1,WANG RongMing1* & HAN YuNan2*1 Key Laboratory of Micro-nano Measurement-Manipulation and Physics(Ministry of Education) and Department of Physics,Beijing University of Aeronautics and Astronautics,Beijing 100191,China,2 School of Physics,Hunan University of Science and Technology,Xiangtan 411201 |