1. College of Chemistry and Materials Science Hunan Agricultural University Changsha P.R. China
2. Hunan Optical Agriculture Engineering Technology Research Center Changsha P. R. China
3. State Key Laboratory of Powder Metallurgy Central South University Changsha P.R. China
4. Jiangsu Bree Optronics Co., Ltd Nanjing P.R. China
5. College of Architecture & Urban Planning Hunan City University Yiyang China