1. Materials Science & Engineering Department, The University of Texas at Dallas, Richardson, Texas 75080, United States
2. Department
of Chemical Engineering, Dong-A University, 37 Nakdong-Daero 550beon-gil, Saha-gu, Busan 604-714, Republic of Korea
3. L&F Material Co., Ltd., 120, Dalseo-daero 91-gil, Dalseo-gu, Daegu 704-948, Republic of Korea