1. Department of Mechanical Engineering, The University of Arkansas, Fayetteville, AR 72701, USA
2. College of Science, Northeast Forestry University, Harbin 150040, Heilongjiang, China
3. The Center for Advanced Surface Engineering, The University of Arkansas, Fayetteville, AR 72701, USA
4. Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
5. National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA