1. Center of NanotechnologyKing Abdulaziz University P.O. Box: 80200 Jeddah 21589 Saudi Arabia
2. Department of Chemical EngineeringNortheastern University Boston MA 02115‐5000 USA
3. Harvard John A. Paulson School of Engineering and Applied SciencesHarvard University Cambridge MA 02138 USA
4. Department of BioengineeringNortheastern University Boston MA 02115‐5000 USA
5. Sorbonne UniversityUTC CNRS UMR 7338Biomechanics and Bioengineering (BMBI)University of Technology of Compiègne Compiègne cedex 60203 France