1. Institute of Materials Research and Engineering A*STAR 2 Fusionopolis Way Singapore 138634 Singapore
2. School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
3. Institute of High Performance Computing A*STAR 1 Fusionopolis Way Singapore 138632 Singapore
4. PGI-5 Forschungszentrum Julich GmbH, Helmholtz Association Julich 52425 Germany