1. Mechanical Engineering, Rice University – MS 321, 6100 Main Street, Houston, TX 77005, USA
2. Faculty of Science and Engineering, Waseda University, 3-4-1 Ookubo, Shinjuku-ku, Tokyo 169-8555, Japan
3. Department of Modern Mechanical Engineering, Waseda University, 3-4-1 Ookubo, Shinjuku-ku, Tokyo 169-8555, Japan
4. School of Engineering, Brown University, 184 Hope St, Providence, RI 02912, USA