Fonction

Research Scientist, Expert Senior CEA

Research activities (2013...)

Nucleation growth and organization of nanoparticles (spheres, rods, tubes, multipods...)

The formation of nanoparticles and associated materials through wet processes is a fascinating problem where physics and chemistry really meet . Our goal is to develop a large panel of experimental and theoretical approaches to improve the global understanding. These are our recent news :

on nanogold

“Understanding of the Size Control of Biocompatible Gold Nanoparticles in Millifluidic Channels”
Hubert F., Testard F.,Thill A. Kong Q, Tache O, Spalla O., Langmuir 28(45) 15966-15974 (2012)

“Growth and Overgrowth of Concentrated Golf Nanorods: Time Resolved SAXS and XANES”
Hubert F., Testard F.,Thill A. Kong Q, Tache O, Spalla O., Crystal Growth and Design 12(3) 1548-1555 (2012)

“Surfactant (bi)Layers on Gold Nanorods”
Gómez-Graña S., Hubert F., Testard F., Guerrero-Martínez A., Grillo I., Liz-Marzán L.M., Spalla O.
Langmuir, 28, 1453-1459 (2012)

“Influence of Monomer Feeding on a Fast Gold Nanoparticles Synthesis: Time-Resolved XANES and SAXS Experiments”
Abécassis B., Testard F., Kong Q., Baudelet F., Spalla O., Langmuir 26, 13847-13854 (2010)

"Nanorods versus Nanospheres: A Bifurcation Mechanism Revealed by Principal Component TEM Analysis"
Hubert F., Testard F., Rizza G., Spalla O., Langmuir 26(10) 6887-6891 (2010)

"Cetyltrimethylammonium bromide complex as the capping agent of gold nanorods"
Hubert F., Testard F., Spalla O., Langmuir 24(17) 9219-9222 (2008)

"Gold superlattice crystallization probed in situ"
Abécassis B. Testard F., Spalla O. Phys. Rev. Lett. 100 (11), 115504 (2008)

"Probing in situ the Nucleation and Growth of Gold Nanoparticles by SAXS"
Abecassis B., Testard F., Spalla, O., Barboux P. Nanoletters 7 (6) 1723-1727 (2007)

PhDs: Benjamin Abécassis (2006) , Fabien Hubert (2009), Jun Han (2012).

on inorganic nanotubes

"Physico-Chemical control over single-double wall of aluminogermanate imogolite-like nanotube"
Thill A. et al, J. Am. Chem. Soc. 134 8 3780-3786 (2012)

"Growth kinetic of single and double-walled aluminogermanate imogolite-like nanotubes : and experimental and modeling approach"
Maillet P. et al, Phys. Chem. Chem. Phys. 13 7 2682-2689 (2011)

"Evidence of Double-Walled Al-Ge Imogolite-Like Nanotubes. A Cryo-TEM and SAXS Investigation"
Maillet P. et al, J. Am. Chem. Soc. 132 (4) 1208-1209 (2010)

"Formation and Growth Mechanisms of Imogolite-Like Aluminogermanate"
Levard C. et al, Chemistry of Materials 22 (6) 2466-2473 (2010)

PhDs: Perrine Maillet (2010)

on silica

"Nucleation of Silica Nanoparticles Measured in Situ during Controlled Supersaturation Increase. Restructuring toward a Monodisperse Nonspherical Shape"
Fouilloux S., Taché O., Spalla O., Thill A. Langmuir 27(20) 12304-12311(2011)

"SAXS exploration of the synthesis of ultramonodisperse silica nanoparticles and quantitative nucleation growth modeling"
Fouilloux, S. Desert A., Tache O. Spalla O. Thill A. J. Col. Int. Sci. 346 (1) 79-86 (2010)

Partner in a former ANR project 2007-2010 "Tocomo"
LIONS is leading theANR project 2011-2013 "Migrani"
LIONS is leading theANR project 2011-2013 "Himo2"

Toxicology and impacts of nanoparticles on environmental bacteria

The development of nanoscience and nanotechnology opened real scientific questions about their interactions with living organisms. We are developing a physico-chemical approach of this problem:

"Interaction between Escherichia coli and TiO2 nanoparticles in natural and artificial waters"
Planchon M.et al Colloids and Surfaces B (2012)

"Direct and indirect CeO₂ nanoparticles toxicity for Escherichia coli and Synechocystis"
Zeyons O., et al Nanotoxicology V3 (4) 284-295 (2009)

"CeO₂ nanoparticles induce DNA damage towards human dermal fibroblasts in vitro"
Auffan M. et al Nanotoxicology V3 (2) 161-165 (2009)

"Cytotoxixity of CeO₂ nanoparticles for E. coli"
Thill A., Zeyons O., Spalla, O. et al Environmental Science and Technology V40 (19) 6151-6156 (2006)

Leader of the CNano Project 2009 "EnSeine"
Partner in European Joint Action "Nanogenotox"
iCEINT Internatinal Consortium for the Environmental Implications of Nano Technology

PhDs: Ophélie Zeyons (2008) , Mariane Planchon (2012)

Collaborators: Camille Guiot (2010-2012)