X-ray scattering in the vorticity direction and rheometry from confined fluids

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PFLEIDERER, Patrick, Seung Jae BAIK, Zhenkun ZHAMG, Giovanni VLEMINCKX, Minnie Paul LETTINGA, Eric GRELET, Jan VERMANT, Christian CLASEN, 2014. X-ray scattering in the vorticity direction and rheometry from confined fluids. In: Review of Scientific Instruments. 85, 065108. ISSN 0034-6748. eISSN 1089-7623

@article{Pfleiderer2014X-ray-29868, title={X-ray scattering in the vorticity direction and rheometry from confined fluids}, year={2014}, doi={10.1063/1.4881796}, volume={85}, issn={0034-6748}, journal={Review of Scientific Instruments}, author={Pfleiderer, Patrick and Baik, Seung Jae and Zhamg, Zhenkun and Vleminckx, Giovanni and Lettinga, Minnie Paul and Grelet, Eric and Vermant, Jan and Clasen, Christian}, note={Article Number: 065108} }

Clasen, Christian 2015-02-18T19:51:13Z Baik, Seung Jae Pfleiderer, Patrick Baik, Seung Jae Vermant, Jan 2014 Grelet, Eric An X-ray flexure-based microgap rheometer (X-FMR) has been designed for combining rheology and in situ small-angle X-ray scattering from the vorticity plane. The gap distance can be varied continuously from 500 μm down to several μm, which provides the unique possibility to generate a strong confinement for many complex fluids. A singular advantage of this setup is the possibility to directly probe the vorticity direction of the flow field with a microfocus X-ray beam and to probe the structural response of the fluid to combined shear and confinement in the vorticity plane. The sliding-plate setup operates over a wide range of shear rates of γ̇ = 10<sup>−3</sup>–10<sup>3</sup> s<sup>−1 </sup>and strains in the range of 10<sup>−4</sup>–10<sup>2</sup>. The flexure-based bearing maintains the plate parallelism within 10<sup>−5</sup> rad. The X-FMR requires very small sample volumes on the order of 10 μl. The applicability of the device is demonstrated here with limited examples of a nematic suspension of fd virus (rods), and a crystalline suspension containing sterically stabilized polystyrene-butylacrylate latex particles. eng Lettinga, Minnie Paul Clasen, Christian Grelet, Eric X-ray scattering in the vorticity direction and rheometry from confined fluids Vleminckx, Giovanni Pfleiderer, Patrick Zhamg, Zhenkun 2015-02-18T19:51:13Z Vermant, Jan Lettinga, Minnie Paul Vleminckx, Giovanni Zhamg, Zhenkun

Dateiabrufe seit 18.02.2015 (Informationen über die Zugriffsstatistik)

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