1. Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano-shi 380-8553, Japan
2. Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda 386-8567, Japan
3. Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 133-8656, Japan
4. Advanced Materials Department, IPICYT, Camino a la Presa San José 2055, Col. Lomas 4. Sección, San Luis Potosí 78216, México
5. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307