1. College of General Education, Xi’an Eurasia University, Xi’an, PR China
2. School of Medical Engineering, Haojing College of Shaanxi University of Science and Technology, Xianyang, PR China
3. Frontiers Science Center for Flexible Electronics (FSCFE), Xi’an Institute of Flexible Electronics (IFE) and Xi’an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi’an, PR China