作者机构:[1]Faculty of Science, Ningbo University, Ningbo 315211, China, [2]Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
相关基金:This work was supported by the Natural Nature Science Foundation of China (No. 11474173), the Natural Science Foundation of Zhejiang province (Nos. Y14A040006 and LQ14F040002), Ningbo Natural Science Foundation (Nos. 2014A610202 and 2014A610149) and the K. C. Wong Magna Fund of Ningbo University.