Sonoporation at small and large length scales: Effect of cavitation bubble collapse on membranes. Ultrasound has emerged as a promising means to effect controlled delivery of therapeutic agents through cell membranes. One possible mechanism that explains the enhanced permeability of lipid bilayers is the fast contraction of cavitation bubbles produced on the membrane surface, thereby generating large impulses, which, in turn, enhance the permeability of the bilayer to small molecules. In the present contribution, we investigate the collapse of bubbles of different diameters, using atomistic and coarse-grained molecular dynamics simulations to calculate the force exerted on the membrane. The total impulse can be computed rigorously in numerical simulations, revealing a superlinear dependence of the impulse on the radius of the bubble. The collapse affects the structure of a nearby immobilized membrane, and leads to partial membrane invagination and increased water permeation. The results of the present study are envisioned to help optimize the use of ultrasound, notably for the delivery of drugs. Journal of Physical Chemistry Letters, 2015.

Recent publications

Bignon, E.; Gattuso, H.; Morell, C.; Dehez, F.; Georgakilas, A. G.; Monari, A. & Dumont, E.
Correlation of bistranded clustered abasic DNA lesion processing with structural and dynamic DNA helix distortion.
Nucleic Acids Res.

2016,  (44), 8588-8599.

Wang, S.; Zhao, T.; Shao, X.; Chipot, C.; Cai, W.
Complex movements in rotaxanes: Shuttling coupled with conformational transition of cyclodextrins
J. Phys. Chem. C

2016,  (120), 19479-19486.

Gattuso, H.; Durand, E.; Bignon, E.; Morell, C.; Georgakilas, A. G.; Dumont, E.; Chipot, C.; Dehez, F.; Monari, A.
Repair rate of clustered abasic DNA lesions by human endonuclease: Molecular bases of sequence specificity
J. Phys. Chem. Lett

2016,  (19), 3760-3765.


- Renewal of the Laboratoire International Associé CNRS-University of Illinois at Urbana-Champaign on November 2016
- An update of ParseFEP is available in the latest version of VMD.
- 新的分子动力学讲义 (Dissemination).


Laboratoire International Associé
Unité mixte de recherche n°7565
Université de Lorraine, B.P. 70239
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