1. Engineering Product DevelopmentSingapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
2. Division of Physics and Applied PhysicsSchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
3. Institute of Materials Research and EngineeringA*STAR #08‐03, 2 Fusionopolis Way, Innovis Singapore 138634 Singapore