Simon Gravelle

Postdoctoral research assistant at the Queen Mary University of London
with a PhD from the University Lyon 1.

The odd behavior of suspended graphene

Current theories predict that a plate-like particle rotates continuously in a shear flow. We instead show that even nanometric hydrodynamic slip may induce a thin plate-like particle to adopt a stable orientation, and discuss implications of this effect for flow processing of 2D nanomaterials.



Find more in Nature Communications.

Biomimetics of a desert rootless plant

We showed that the ability of the desert plant Tillandsia to absorb liquid water while also preventing its evaporation during drought results from a passive mechanism relying on a clever juxtaposition of material within its epidermis.



Find more in Nature Communications and J. Chem. Phys.

The origin of pink noise in nanopore

We showed that the low-frequency pink noise commonly measured in nanopore takes its origin in the reversible adsorption of ions at the pore surface combined with the excursions of the ions in the reservoirs.

Find more in Nano Letters.

The permeability of aquaporins

Our results show that a nanopore with conical entrances and suitable opening angles provides increased hydrodynamic permeability. Strikingly, optimal opening angles as predicted by our model compare well with the angles measured in a large variety of aquaporins.

Find more in PNAS and J. Chem. Phys.

List of publications

  • Effect of hydrodynamic slip on the rotational dynamics of a thin Brownian platelet in shear flow
    Catherine Kamal, Simon Gravelle, Lorenzo Botto
    Submitted

  • Adsorption Kinetics in Open Nanopores as a Source of Low-Frequency Noise
    Simon Gravelle, Roland R. Netz, Lydéric Bocquet
    Nano Letters, 19 (10), 2019

  • Anomalous capillary filling and wettability reversal in nanochannels
    Simon Gravelle, Christophe Ybert, Lydéric Bocquet, Laurent Joly
    Physical Review E, 93 (3), 2016

  • Nanofluidics: a theoretical and numerical investigation of fluid transport in nanochannels
    Simon Gravelle
    PhD thesis, tel-02375009v1

  • Perméabilité optimale des aquaporines : une histoire de forme?
    Simon Gravelle, Laurent Joly, François Detcheverry, Christophe Ybert, Cécile Cottin-Bizonne, Lydéric Bocquet
    Médecine/Sciences, 31 (2), 2015

  • Sub-additive ionic transport across arrays of solid-state nanopores
    Alessandro Gadaleta, Catherine Sempere, Simon Gravelle, Alessandro Siria, Rémy Fulcrand, Christophe Ybert, Lydéric Bocquet
    Physics of Fluids, 26 (1), 2014

Resume

Research interests

  • Porous medium
    Hygroscopic biomaterial, Inorganic membrane
  • Colloid
    Suspension in shear flow, Liquid phase exfoliation, Rheology, Hydrodynamic slip effects
  • Biomimetics
    Water capture, Thermoregulation
  • Mass transport
    Entrance effects, Continuum limit, Osmosis, Capillary effects
  • Electrohydrodynamics
    Surface charge fluctuations, Pink noise, Nanofluidic diode
  • Plant cell division
    Cytoskeleton dynamics, Self organisation, Collective effect

Skills

  • Molecular simulations
    Equilibrium and out-of-equilibrium molecular dynamics, Grand Canonical Monte-Carlo, Umbrella sampling
  • Continuum simulations
    Finite element calculations, Numerical resolution of equation
  • Experiments
    Fluorescence correlation spectroscopy, Mass flow characterisation
  • Other
    Python, C++, Matlab/Octave

Professional and academic career

  • 2019-today : Postdoctoral Research Assistant, Queen Mary University of London, London, United Kingdom
                     with Lorenzo Botto
  • 2016-2019 : Postdoctoral Research Assistant, Universidad Adolfo Ibáñez, Viña del Mar, Chile
                     with Jacques Dumais
  • 2012-2015 : Doctor of Philosophy (PhD), Université Claude Bernard, Lyon, France
                     with Lydéric Bocquet, Christophe Ybert, and Laurent Joly
                     Nanofluidics : a theoretical and numerical investigation of fluid transport in nanochannels
  • 2010-2012 : Master of Science (MSc), with a major in physics, ENS Lyon, Lyon, France
  • 2007-2010 : Bachelor of Science (BSc) with a major in physics, Université de Franche-Comté, Besançon, France

Contact

  • I am always willing to discuss science and simulations, please do not hesitate to contact me if you have any questions about my work.

  • Email

    s.gravelle at qmul.ac.uk

  • Social