Affiliation: | 1. Technology Research Institute of Osaka Prefecture, 2‐7‐1 Ayumino, Izumi, Osaka 594‐1157, JapanTechnology Research Institute of Osaka Prefecture, 2‐7‐1 Ayumino, Izumi, Osaka 594‐1157, Japan. Fax: +81 725 51 2699;2. Technology Research Institute of Osaka Prefecture, 2‐7‐1 Ayumino, Izumi, Osaka 594‐1157, Japan |