O
Olivier Diat
Researcher at Centre national de la recherche scientifique
Publications - 191
Citations - 8298
Olivier Diat is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Scattering & Small-angle X-ray scattering. The author has an hindex of 45, co-authored 178 publications receiving 7559 citations. Previous affiliations of Olivier Diat include University of Montpellier & Hokkaido University.
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Journal ArticleDOI
Evidence of elongated polymeric aggregates in Nafion
TL;DR: In this paper, a new structural model of Nafion in the hydrated state is proposed based on aggregation of the ionomer chains into elongated polymeric bundles with a diameter on the order of 40 A and a length larger than 1000 A.
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How coenzyme B12 radicals are generated: the crystal structure of methylmalonyl-coenzyme A mutase at 2 A resolution.
Filippo Mancia,Nicholas H. Keep,Atsushi Nakagawa,Peter F. Leadlay,Sean McSweeney,Bjarne F. Rasmussen,Peter Bö secke,Olivier Diat,Philip R. Evans +8 more
TL;DR: The histidine-cobalt distance is very long, suggesting that the enzyme positions the histidine in order to weaken the metal-carbon bond of the cofactor and favour the formation of the initial radical species.
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Fibrillar structure of Nafion: Matching fourier and real space studies of corresponding films and solutions
TL;DR: In this article, the complex Nafion structure over a large range of length scales was characterized using both scattering and microscopy techniques, and it was shown that fibrils correspond to elongated polymeric aggregates surrounded with the ionic charges.
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Short-side-chain proton conducting perfluorosulfonic acid ionomers: Why they perform better in PEM fuel cells
Klaus-Dieter Kreuer,M. Schuster,B. Obliers,Olivier Diat,U. Traub,Annette Fuchs,U. Klock,Stephen J. Paddison,Joachim Maier +8 more
TL;DR: In this article, short-side-chain (SSC) perfluorosulfonic acid ionomers of different ion exchange capacity, IEC, (Dow 840 and Dow 1150) are characterized with respect to water sorption, transport (proton conductivity, electroosmotic water drag and water diffusion), microstructure and visco-elastic properties as a function of temperature and degree of hydration.
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Effect of shear on a lyotropic lamellar phase
TL;DR: In this paper, the orientation of lyotropic lamellar phases under shear was determined using different techniques such as light scattering, conoscopy, neutron scattering and microscopic observations.