1. Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106, USA
2. Department of Mechanical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106, USA
3. Department of Applied Mechanics, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Müegyetem rkp. 3., H-1111 Budapest, Hungary
4. Materials Department, University of California Santa Barbara, Santa Barbara, CA 93106, USA