1. Department of Materials Science and EngineeringNational University of Singapore 9 Engineering Drive 1 Singapore 117576 Singapore
2. Institute of Materials Research and EngineeringAgency for Science, Technology, and Research (A*STAR) 2 Fusionopolis Way, Innovis #08‐03 Singapore 138634 Singapore
3. Kenya Industrial Research and Development Institute P. O. Box 30650‐00100 Nairobi Kenya
4. Singapore Institute of Manufacturing TechnologyAgency for Science, Technology, and Research (A*STAR) 73 Nanyang Drive Singapore 637662 Singapore