1. Department of Mechanical Engineering University of California, Berkeley 6107 Etcheverry Hall, 2521 Hearst Avenue Berkeley CA 94720 USA
2. Intel Corporation Intel SC2, 3065 Bowers Avenue Santa Clara CA 95054 USA
3. Department of Mechanical and Aerospace Engineering University of California, San Diego 9500 Gilman Dr. La Jolla CA 92093 USA