Wen Li, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singgapore, Singapore, Samarasinghe Arachchige Sulashi Chathushka Samarasinghe, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore and Tae-Hyun Bae, Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore