1. Center for Precision Engineering, Harbin Institute of Technology, P.O. Box 413, Harbin,
Heilongjiang 150001, China
2. Department of Chemical & Material Engineering, University of Dayton, 300 College Park, Dayton, Ohio 45469, United States
3. Department of Chemical & Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235-1604, United States
4. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee
37831-6494, United States