1. Department of Materials Science and EngineeringMonash University Clayton VIC 3800 Australia
2. Department of Mechanical EngineeringThe University of Western Australia Crawley WA 6009 Australia
3. Donetsk Institute for Physics and Engineering named after A.A. GalkinNational Academy of Sciences of Ukraine Kyiv 03680 Ukraine
4. Institute of NanotechnologyKarlsruhe Institute of Technology Eggenstein-Leopoldshafen 76344 Germany