1. Singapore Centre for 3D Printing School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore 639798 Singapore
2. Faculty of Mechanical and Electrical Engineering Kunming University of Science and Technology Kunming 650500 China
3. Singapore Membrane Technology Centre Nanyang Environment & Water Research Institute (NEWRI) Nanyang Technological University Singapore 637141 Singapore
4. School of Civil and Environmental Engineering Nanyang Technological University Singapore 639798 Singapore