1. CEA, DES, ISEC, DPME, Univ. Montpellier, F-30207 Bagnols-sur-Cèze, France
2. CEA, DES, ISEC, DMRC, Univ. Montpellier, F-30207 Bagnols-sur-Cèze, France
3. Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, USA
4. Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA
5. Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA