1. Key Laboratory of Materials Modification by Laser Ion and Electron Beams Dalian University of Technology Ministry of Education Dalian 116024 P. R. China
2. Institute of Applied Physics and Computational Mathematics Beijing 100088 P. R. China
3. Institute of High Performance Computing A*STAR Singapore 138632 Singapore
4. State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology Dalian 116024 P. R. China