Zobrazeno 1 - 10
of 253
pro vyhledávání: '"S, Urbach"'
Publikováno v:
Frontiers in Physics, Vol 12 (2024)
We introduce a method for precise and accurate measurements of particle speeds in dense suspensions flowing at high rates and demonstrate the utility of the approach for revealing complex flow fluctuations during shearing in a setup that combines ima
Externí odkaz:
https://doaj.org/article/0a156f53fecd4826a3a0e68e5d1aec69
Publikováno v:
Frontiers in Physics, Vol 10 (2022)
We introduce a novel approach to reveal ordering fluctuations in sheared dense suspensions, using line scanning in a combined rheometer and laser scanning confocal microscope. We validate the technique with a moderately dense suspension, observing mo
Externí odkaz:
https://doaj.org/article/d253b5b9e6ae4c0db70123ec2739ea28
Akademický článek
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Autor:
Justin-Aurel Ulbrich, Carla Fernández-Rico, Brian Rost, Jacopo Vialetto, Lucio Isa, Jeffrey S. Urbach, Roel P. A. Dullens
Publikováno v:
Physical Review E, 107, 4, pp. 1-5
Physical Review E, 107, 1-5
Physical Review E, 107, 1-5
Anisotropic colloidal particles exhibit complex dynamics which play a crucial role in their functionality, transport and phase behaviour. In this work, we investigate the two-dimensional diffusion of smoothly curved colloidal rods -- also known as co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91c48935fda73acc85f7680722449aef
https://repository.ubn.ru.nl/handle/2066/293020
https://repository.ubn.ru.nl/handle/2066/293020
Autor:
W J Weigand, A Messmore, J Tu, A Morales-Sanz, D L Blair, D D Deheyn, J S Urbach, R M Robertson-Anderson
Publikováno v:
PLoS ONE, Vol 13, Iss 8, p e0203102 (2018)
[This corrects the article DOI: 10.1371/journal.pone.0176732.].
Externí odkaz:
https://doaj.org/article/ecc5d32ebfe04e6f87778bba9677d299
Autor:
W J Weigand, A Messmore, J Tu, A Morales-Sanz, D L Blair, D D Deheyn, J S Urbach, R M Robertson-Anderson
Publikováno v:
PLoS ONE, Vol 12, Iss 5, p e0176732 (2017)
We characterize the lengthscale-dependent rheological properties of mucus from the ubiquitous Chaetopterus marine worm. We use optically trapped probes (2-10 μm) to induce microscopic strains and measure the stress response as a function of oscillat
Externí odkaz:
https://doaj.org/article/b5a109827afa4fdda917a2f51c303b2f
Autor:
Sevim Yardimci, Thomas Gibaud, Walter Schwenger, Matthew R. Sartucci, Peter D. Olmsted, Jeffrey S. Urbach, Zvonimir Dogic
We study how the three-dimensional shape of rigid filaments determines the microscopic dynamics and macroscopic rheology of entangled semi-dilute Brownian suspensions. To control the filament shape we use bacterial flagella, which are micron-long hel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10f8f07eb9294c3cca74e19a2587d494
http://arxiv.org/abs/2209.09196
http://arxiv.org/abs/2209.09196
Publikováno v:
Journal of Rheology. 64:299-308
We report direct measurements of spatially resolved surface stresses over the entire surface of a dense suspension during discontinuous shear thickening (DST) using boundary stress microscopy (BSM) in a parallel-plate rheometer. We find that large fl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52620183f31354e31ee936de83378ffe
https://doi.org/10.1122/1.5145111
https://doi.org/10.1122/1.5145111
We report direct measurements of spatially resolved stress at the boundary of a shear-thickening cornstarch suspension revealing persistent regions of high local stress propagating in the flow direction at the speed of the top boundary. The persisten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7491050d7b62137f94a98ca2c6775f4f
Publikováno v:
PLoS ONE, Vol 10, Iss 3, p e0118021 (2015)
Disordered fiber networks provide structural support to a wide range of important materials, and the combination of spatial and dynamic complexity may produce large inhomogeneities in mechanical properties, an effect that is largely unexplored experi
Externí odkaz:
https://doaj.org/article/79544c4c90924b8cafca30e00f1caa76