1. Department of Mechanical and Industrial
Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
2. Department of Mechanical and Process Engineering, Swiss Federal Institute of Technology, 8092 Zürich, Switzerland
3. Nanophysics, Instituto Italiano di Tecnologia, Via Morego
30, 16163 Genova, Italy
4. Corporate Research and Engineering, Kimberly-Clark Corporation, Neenah, Wisconsin 54956, United States
5. Corporate
Research and Engineering, Kimberly-Clark Corporation, Roswell, Georgia 30076, United States