Affiliation: | 1. School of Materials Science and Technology, China University of Geosciences, Beijing 100083, P.R. China;2. Shanghai Zhuolan Communication Engineering Co., Ltd., Shanghai 318000, P.R. China;3. Department of Physics and College of Geography and Environmental Sciences, Zhejiang Normal University, 321004 Jinhua, P.R. China;4. Shanghai Zhuolan Communication Engineering Co., Ltd., Shanghai 318000, P.R. ChinaPhone: +86 579 8229 8979, Fax: +86 579 8229 8188 |