1. Department of Materials Processing,
Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
2. Graduate School of Science and
Technology, Nihon University, 1-8-14 Kanda-surugadai,
Chiyoda-ku, Tokyo 101-8308, Japan
3. Institute of Biomaterials and
Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
4. Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette,
Indiana 47907-2084, United States
5. Department of Polymer Chemistry,
Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan