1. The Petroleum and Petrochemical College, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok 10330, Thailand, Department of Future Industry-Oriented Basic Science and Materials, Graduate School of Engineering, Toyota Technological Institute, Tempaku, Nagoya 468-8511, Japan, and Department of Material and Life Science, Graduate School of Engineering, Osaka University, Yamadaoka, Suita, Osaka 565-0871, Japan