1. Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia
2. The Melbourne Centre for Nanofabrication, Clayton, Victoria 3800, Australia
3. Center
for Condensed Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin, Heilongjiang Province 150080, P.R. China
4. Advanced Computing and Simulation Laboratory (AχL), Department
of Electrical and Computer Systems Engineering, Monash University, Clayton, Victoria 3800, Australia