1. School of Mechanics and Engineering Science, Zhengzhou University, Zhengzhou 450001, P. R. China
2. National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, P. R. China
3. School of Material Science & Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
4. Henan NANONEW Materials Technology Co., Ltd, Zhengzhou 450001, P. R. China