Isabelle Bihannic

TL;DR: The presence of buoyant microplastics (PE, PP and PS) in sediment suggests the existence of physical and/or biological processes leading to vertical transfer of lightweight microplastic in the Bay of Brest, and it is suggested that the observed spatial MP distribution is related to proximity to urbanized areas and to hydrodynamics in the bay.

TL;DR: Small-angle x-ray scattering measurements of gel samples reveal strong positional and orientational orders of the particles, proving unambiguously the nematic character of the gel and, thus, clearly refuting the still prevalent “house of cards” model.

TL;DR: Interacting clay particles are amenable to generate, at rest and/or under shear, large anisotropic particle associations that are not directly related to an isotropic/nematic transition of individual clay particles.

TL;DR: An overview of the organization of colloidal charged clay particles in aqueous suspension is presented by studying different natural samples with different structural charges and charge locations through a detailed investigation of the structure factors of the various clay samples.

TL;DR: After size-selection and osmotic pressure measurements at fixed ionic strength, the behavior of aqueous colloidal suspensions of anisotropic disklike beidellite clay particles has been investigated by combining optical observations under polarized light, rheological, and small angle X-ray scattering (SAXS) experiments.