1. Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link 637371 Singapore
2. Centre for Optical and Lasers in Engineering (COLE); School of Mechanical and Aerospace Engineering; Nanyang Technological University; 50 Nanyang Avenue 639798 Singapore
3. School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue 639798 Singapore