1. Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao 266071, China
2. Electronic Ceramics Center, Dong-Eui University, Busan 614-714, Korea
3. Department of Energy and Materials Engineering, Dongguk University, Seoul 100-715, Korea
4. Department of Materials Science/CENIMAT-I3N, Faculty of Sciences and Technology, New University of Lisbon and CEMOP-UNINOVA, Campus de Caparica, Caparica 2829-516, Portugal