1. Department of Electrical
and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, 117576, Singapore
2. Data Storage Institute, (A*STAR) Agency for Science Technology and Research, 2 Fusionopolis Way, 138634, Singapore
3. College of Materials Science and Engineering, Hunan University, Changsha, 410082, China
4. Department of Biomaterials,
College of Materials, Xiamen University, Xiamen, 361005, China
5. Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore