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Journal article
Shape- and orientation-dependent diffusiophoresis of colloidal ellipsoids
PHYSICAL REVIEW E, v 107(5), L052602
18 May 2023
PMID: 37329064
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Abstract
We present the diffusiophoresis of ellipsoidal particles induced by ionic solute gradients. Contrary to the common expectation that diffusiophoresis is shape independent, here we show experimentally that this assump-tion breaks down when the thin Debye layer approximation is relaxed. By tracking the translation and rotation of various ellipsoids, we find that the phoretic mobility of ellipsoids is sensitive to the eccentricity and the orientation of the ellipsoid relative to the imposed solute gradient, and can further lead to nonmonotonic behavior under strong confinement. We show that such a shape-and orientation-dependent diffusiophoresis of colloidal ellipsoids can be easily captured by modifying theories for spheres.
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Details
- Title
- Shape- and orientation-dependent diffusiophoresis of colloidal ellipsoids
- Publication Details
- PHYSICAL REVIEW E, v 107(5), L052602
- Publisher
- AMER PHYSICAL SOC; COLLEGE PK
- Grant note
- This material is based upon work supported by the National Science Foundation under Grants No. 2200882 and No. 2223737. S.S. thanks Jesse Ault for valuable discussions. Y.S. thanks the National Science Foundation under Grants No. 1705745 and No. 2300317.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000996250700002
- Scopus ID
- 2-s2.0-85163098178
- Other Identifier
- 991021861195604721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Physics, Fluids & Plasmas
- Physics, Mathematical