Olivier Diat

Researcher CEA / Fondamental Research Division
Doctor of Philosophy in Physics

Deputy director of ICSM

Team leader "Ions at Active Interfaces Laboratory" (L2IA)


ICSM/L2IA (Bât. 426)
Site de Marcoule
BP 17171
F-30207 Bagnols-sur-Cèze Cedex
Tel : +33 4 66 33 92 09
e-mail : olivier.diat ad cea.fr



Education and Academic Career

Since 2019Deputy director of ICSM
Since 2014Team Leader (L2IA) and Research Director at ICSM 
2007 – 2013Team Leader (L2IA and LDD) at ICSM 
1999 – 2007Assistant director (2005 – 2007) and safety engineer of the UMR 5819 – SPrAM "Structure and properties of molecular architectures" (CEA Grenoble)
Scientist in the "Ionic Polymer" group (PCI)
June 2006HDR in physics: "Structure of self-assembled and multi-scaled system"
1997 – 1998Beamline responsible of the ID2 "high brilliance" at the European Synchrotron Radiation Facility (ESRF) at Grenoble
1993 – 1996Co-responsible of the ID2 "high brilliance" at the European Synchrotron Radiation Facility (ESRF) at Grenoble
In charge of SAXS experimental part under the supervision of Dr P. Bösecke
1992 – 1993Post-doc on ID13 microfocus beamline with Dr C. Riekel as a superviser
September 1992Ph.D. – Paul Pascal research center (CNRS / Bordeaux) under the supervision of Dr Didier Roux:
« Shear effect on lyotropic phases: Lamellar and sponge phases phases » 
Awarded from the "Société Française de Chimie d'Aquitaine" (June 1992, ENSCPB)
1990 – 1991Teaching – Optical courses (licence level)
1989DEA (Master) in fondamental physics (University of Bordeaux)



Scientific techniques applied to soft condensed matter: polymer, surfactant and lipids in solution, mixed colloidal systems:

  • Small and ultra- small angle X-ray scattering
  • Small angle neutron scattering
  • Static and dynamic light scattering
  • Birefringence, microscopy
  • Conductivity, impedencemetry
  • Rheophysics

Multiscaled properties of complex fluids, ionic polymeric membrane, ion transfer between fluids.



  • (co)Supervising of 10 thesis + numerous post-doc (>15) and university trainees
  • President of the selection committee of "Soft Matter" at Leon Brillouin Laboratory (ended in 2007). Member of the selection committee of NIST, SOLEIL, and of several Review panels
  • (co)Organisation of 4 workshops:
    • SONS-Eurocores program "Self-assembled structures of amphiphilic ionic copolymers in solutions and at interfaces" (May 10 – 14, 2005), Arcachon
    • SAXS/SANS’99 (March 11 – 12, 1999), Grenoble
    • SASFlow’98 (Mai 28 – 29, 1998), Grenoble
    • Current Frontiers in Liquid-Liquid Interfaces (Oct 21-23, 2015), ILL Grenoble
  • Participation to several ANR (French National Research Agency) projects: MEPHISTO, HYBRID, DVDAME, PAN’H and recently FANTASIC, CATASURF in CD2I, CELADYCT, and ILLA in "ANR Blanc Programme" DEMETERRES + LabCom "VECT'OLEO" with a small industrial company OLEOS.



More than 150 papers and 4 patents (+ 15 invited conferences) ; H-index 34

Switchable Self-assembly of Prussian Blue Analogs Nano-tiles Triggered by Salt Stimulus
D. Dedovets, P. Bauduin, J. Causse, L. Girard and O. Diat
Phys. Chem. Chem. Phys. 18 (2016) 3188 – 3196

Elucidation of the Structure of Organic Solutions in Solvent Extraction by Combining Molecular Dynamics and X-ray Scattering
G. Ferru, D. Gomes-Rodrigues, L. Berthon, O. Diat, P. Bauduin and Ph. Guilbaud
Angew. Chem. Int. Ed. 53(21) (2014) 5346 – 5350

Lyotropic lamellar phase made of monolayered θ-shaped amphiphiles
D. Brusselle, P. Bauduin, L. Girard, A. Zaulet, C. Viñas, F. Teixidor, I. Ly and O. Diat
Angew. Chem. Int. Ed. 52(46) (2013) 12114 – 12118

Structural evolution during geopolymerization, from early age to consolidated material
P. Steins, A. Poulesquen, O. Diat and F. Frizon
Langmuir 28(22) (2012) 8502 – 8510

A Theta-Shaped Amphiphilic Cobaltabisdicarbollide Anion: Transition From Monolayer Vesicles to Micelles
P. Bauduin, S. Prevost, P. Farràs, F. Teixidor, O. Diat and T. Zemb
Angew. Chem. Int. Ed. 50(23) (2011) 5298

Surfactin Self-Assembles into Direct and Reverse Aggregates in Equilibrium and Performs Selective Metal Cation Extraction
C. Dejugnat, T. Zemb and O. Diat
ChemPhysChem 12(11) (2011) 2138 – 2144

Fuel cells: Proton channels
O. Diat and G. Gebel
Nature Materials 7(1) (2007) 13 – 14

Block-ionomer for fuel cell application
O. Diat and G. Gebel
chapter 15 in Block Copolymers in Nanoscience, Edited by Lazzari, Liu & Lecommandoux, 2006, Published by WILEY-VCH

Structural study of proton-conducting fluorous block copolymer membranes
L. Rubatat, Z. Shi, O. Diat, S. Holdcroft, and B. Frisken
Macromolecules 39(2) (2006) 720 – 730

Review on Neutron and X-ray scattering : suitable tools for studying ionomer membranes
G. Gebel and O. Diat
Fuel Cells 5(2) (2005) 261 – 276

Fibrillar structure of Nafion: Matching Fourier and real space studies of Nafion Films and Solutions
L. Rubatat, G. Gebel and O. Diat
Macromolecules 37 (2004) 7772 – 7783

Influence of screw dislocation on the orientation of a sheared lamellar phase
O. Dhez, N. Nallet and O. Diat
Europhys. Lett. 55(6) (2001) 821 – 826

Small angle X-ray scattering from dynamic processes
O. Diat, T. Narayanan, D. L. Abernathy  and G. Grübel
Current Opinion in Colloid & Interface Science  3(3) (1998) 305-311

High angular resolution camera coupled with an undulator source at the ESRF high brilliance beamline
O. Diat, P. Bösecke and J. Lambard
J. Appl. Cryst. 30 (1997) 862 – 866

Structure of influenza virus haemagglutinin complexed with a neutralizing antibody
T. Bizebard, B. Gigant, P. Rigolet, B. Rasmussen, O. Diat, P. Bösecke, S. A. Wharton, J. J. Skehel and M. Knossow
Nature 376(6) (1995) 92 – 94

Preparation of monodisperse multilayer vesicles of controlled size and high encapsulation rate
O. Diat and D. Roux
J. Phys. II France 3 (1993) 9 – 14