1. State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures; School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P. R. China
2. College of Electronics and Information, Qingdao University, Qingdao 266071, P. R. China
3. School of Physical Science and Technology, Guangxi University, Nanning 53004, P. R. China
4. State Key Laboratory for Chemo/Biosensing and Chemometrics College of Semiconductors (Integrated Circuits), Hunan University, Changsha 410082, P. R. China