Laboratoire de Physique Théorique de la Matière Condensée

Hélène BERTHOUMIEUX

Chargée de recherche au LPTMC et visiteuse au laboratoire Gulliver

Postdoc position open, please apply! 

 

Thèmes de recherche

Electrolytes at the nanoscale

Properties of electrolytes at the nanoscale differ drastically from ones of macroscopic systems. We build field theory to describe properties of electrolytes nanoconfined. We use both classical and quantum simulations as inputs to extract essential ingredients of the theory and to parametrize them.


Active biological membranes

Many cellular organelles are membrane-bound structures with complex membrane composition and shape. Their shapes have been observed to depend on the metabolic state of the organelle. We model these coupled systems using reaction-diffusion equations and generalized Helfrich models. We apply these models to the description of mitochondria.

 

Publications

  • T. Mendes, J. Ranft,  H. Berthoumieux, A model for membrane deformations driven by a surface pH gradient, ArXiv,arXiv:2209.15080 (2022)
  • A. Robert, H. Berthoumieux, M.-L. Bocquet, Coupled interactions at the ionic graphene/water interface, ArXiv,arXiv:2204.08779, (2022)
  • G. Monet, F. Bresme, A. Kornyshev, H. Berthoumieux*, Nonlocal dielectric response of water in nanoconfinement, Phys. Rev. Lett. 126 216001, (2021).
  • H. Berthoumieux, G. Monet, R. Blossey, Dipolar Poisson models in a dual view, J. Chem Phys. 155,  024112 (2021). 

  •  M. Vatin, A. Porro, N. Sator, JF. Dufrêche, H. Berthoumieux*, Electrostatic interactions in water: nonlocal electrostatic approach, Mol. Phys. e1825849, (2020).

  •  N. Patil, S. Bonneau, F. Joubert, AF Bitbol, H. Berthoumieux*, Mitochondrial cristae modeled as an out-of-equilibrium membrane driven by a proton field,  Phys. Rev. E, 102 022401, (2020).

  • F. Paillusson, H. Berthoumieux, Dielectric response in the vicinity of an ion: A nonlocal and nonlinear model of the dielectric properties of water, J. Chem. Phys. (2019), 150, 094507.
  • H Berthoumieux,Gaussian field model for polar fluids as a function of density and polarization: toward a model for water, J. Chem. Phys. (2018), 148, 104504.
  • H. Berthoumieux, Fluctuations in reactive networks subject to extrinsic noise studied in the framework of the chemical Langevin equation, Phys. Rev. E, (2016), 94, 012310.
  • H. Berthoumieux and A. C. Maggs, Fluctuation-induced forces governed by the dielectric properties of water, a contribution to hydrophobic interactions , J Chem Phys., (2015), 143, 104501.
  • H. Berthoumieux, J-L. Maître, C-P. Heisenberg, E. K. Paluch, F. Jülicher and G.Salbreux,Active elastic thin shell theory for cellular deformation, New Journal of Physics (2014), 16, 065005.
  • J-L. Maître, H. Berthoumieux, S. F. G. Krens, G. Salbreux, F. Jülicher, E. Paluch, C-P. Heisenberg, La mécanique de l'adhésion cellulaire dans la gastrulation du poisson zèbre, Médecine sciences (2013), 29, 147-150.
  • J-L. Maître, H. Berthoumieux, S. F. G. Krens, G. Salbreux, F. Jülicher, E. Paluch, C-P. Heisenberg, Adhesion function in cell sorting by mechanically coupling the cortices of adhering cells, Science (2012), 338, 253-256.
  • A. Lemarchand, H. Berthoumieux, L. Jullien, C . Gosse, Chemical mechanism identification from frequency responce to small temperature modulation, J. Chem. Phys,116, 8455-8463, (2012).
  • K. Zrelli, T. Barilero, E. Cavatore, H. Berthoumieux, T. Le Saux, V. Croquette, A. Lemarchand, C Gosse, L. Jullien, Temperature modulation and quadrature detection for selective titration of two-state exchanging reactants, Anal. Chem, 83, 2476-2484 (2011).
  • K. Zrelli, T. Barilero, H. Berthoumieux, T. Le Saux, C. Gosse, A. Lemarchand and L. Jullien, Kinetic and Thermodynamic Characterisation by Heating in a Microfluidic Cell, Sensor Lett. 9, 2332 (2011).
  • H. Berthoumieux, A. C. Maggs, Collective dispersion forces in the fluid state, Europhys Lett., 91, 56006 (2010).
  • H. Berthoumieux, C. Antoine, A. Lemarchand, Determination of the six rate constants of a three-state enzymatic network and a noninvasive test of detailed balance, J. Chem. Phys., 131, 084106 (2009). Selected by the Virtual Journal of Biological Physics Research, Sep. 1, Vol. 18(5), 2009.
  • H. Berthoumieux, C. Antoine, A. Lemarchand, L. Jullien, Resonant response to temperature modulation for enzymatic dynamics characterization, Phys. Rev. E, 79, 021906 (2009). Selected by the Virtual Journal of Biological Physics Research, Feb. 15, Vol. 17(4), 2009.
  • H. Berthoumieux, A. Lemarchand, L. Jullien, Response to a temperature modulation as a signature of chemical mechanisms, Phys. Rev. E, 76, 056112 (2007). Selected by the Virtual Journal of Biological Physics Research, Nov. 15, Vol. 14(10), 2007.
  • A. Estévez-Torres, C. Gosse, T. Le Saux, J.-F. Allemand, V. Croquette, H. Berthoumieux, A. Lemarchand, and L. Jullien, Fourier analysis to measure diffusion coefficients and resolve mixtures on a continuous electrophoresis chip, Anal. Chem., 79, 8222 (2007).
  • H. Berthoumieux, A. Lemarchand, L. Jullien, Temporal modulation of a spatially periodic potential for kinetically governed oriented motion, J. Phys. Chem. B, 111, 2045 (2007).
  • J. Pilme, H. Berthoumieux, V. Robert, P. Fleurat-Lessard, Unusual bond formation in aspartic protease inhibitors : A theoretical study, Chemistry, 13, 5388, (2007).

Book chapter

  • A. Senoussi, Y. Vyborna, H. Berthoumieux, J-C Galas J-C, A. Estevez-Torres, Learning from embryo development to engineer self-organizing materials, in Out-of-equilibrium supramolecular systems and materials, eds N. Giuseppone and A. Walther (Wiley-VCH), 2021.

 

 

Proceedings

  • K. Zrelly, T. Barilero, E. Cavatore, H. Berthoumieux, V. Croquette, A. Lemarchand, L. Jullien, T. Le Saux, C. Gosse, Temperature modulation and phase sensitive imaging to detect point mutations, Proceddings of the 14th International conference on miniaturized systems for chemistry and life sciences (2010).
  • K. Zrelli, T. Barilero, T. Le Saux, L. Jullien, H. Berthoumieux, A. Lemarchand, and C. Gosse, Thermal modulation and filtered video acquisition to image reactive species among non reactive ones, Proceedings of the 13th International conference on miniaturized systems for chemistry and life sciences. T. S. Kim, Y.-S. Lee, T.-D. Chung, N. L. Jeon, S.-H. Lee, K.-Y. Suh, J. Choo, Y.-K. Kim, eds., 1, 948 (2009).
  • A. Estevez-Torres, T. Le Saux, H. Berthoumieux, A. Georges, S. Fernandez, J.-F. Allemand, V. Croquette, A. Lemarchand, L. Jullien, and C. Gosse, Point mutation detection by on- chip diffusion coefficient measurement, Proceedings of the 11th International conference on miniaturized systems for chemistry and life sciences, J.-L. Viovy, P. Tabeling, S. Descroix, and L. Malaquin, eds., 1, 236 (2008).