1. Institute for Materials Science and Max Bergmann Center of Biomaterials, Technische Universität Dresden, D-01062 Dresden, Germany
2. CNRS, CEMES (Centre d’Elaboration des Matériaux et d’Etudes Structurales) and MANA Satellite, BP 94347, 29 rue J. Marvig, F-31055 Toulouse, France
3. Division of IT Convergence Engineering, POSTECH, Pohang 790-784, Republic of Korea