1. School of Mechanical
and Aerospace Engineering, Nanyang Technological University, 50 Nanyang
Avenue, 639798 Singapore, Singapore
2. Institute of Soft Matter Mechanics, College
of Mechanics and Materials, Hohai University, Nanjing, Jiangsu 210098, PR China
3. School
of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore
4. Department
of Diagnostic Radiology, Singapore General Hospital, Singapore 169608, Singapore
5. School
of Physical and Mathematical Sciences, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore