1. Flexible Printed Electronic Technology CenterHarbin Institute of Technology Shenzhen 518055 P. R. China
2. School of ScienceHarbin Institute of Technology Shenzhen 518055 P. R. China
3. School of Materials Science and EngineeringHarbin Institute of Technology Shenzhen 518055 P. R. China
4. State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology Shenzhen 518055 P. R. China