1. School of Materials Science and Engineering; Nanyang Technological University; Singapore 639798
2. Department of Chemistry; Rice University; Houston Texas 77005 USA
3. Materials Science & Technology Division; Oak Ridge National Laboratory; Oak Ridge Tennessee 37831 USA
4. Department of Mechanical Engineering & Materials Science; Rice University; Houston Texas 77005 USA
5. NOVITAS, Nanoelectronics Centre of Excellence; School of Electrical and Electronic Engineering; Nanyang Technological University; Singapore 639798
6. CINTRA CNRS/NTU/THALES, UMI 3288; Research Techno Plaza; 50 Nanyang Drive, Border X Block, Level 6 Singapore 637553