1. Centre
for Programmed Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
2. School
of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
3. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
4. NOVITAS,
Nanoelectronics Centre of Excellence, School of Electrical and Electronic
Engineering, Nanyang Technological University, 639798, Singapore