- Physical Review Journals
All JournalsPhysics Magazine

Physical Review E

Export citation

Export citation

Choose format for download:

Download Citation
  • Letter

Shape- and orientation-dependent diffusiophoresis of colloidal ellipsoids

Viet Sang Doan1, Dong-Ook Kim2, Craig Snoeyink1, Ying Sun2, and Sangwoo Shin1,*

  • 1Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA
  • 2Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104, USA

  • *sangwoos@buffalo.edu
PDF

Phys. Rev. E 107, L052602 – Published 18 May, 2023

DOI: https://doi.org/10.1103/PhysRevE.107.L052602

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 assumption 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.

View figure in article

Physics Subject Headings (PhySH)

Authorization Required

We need you to provide your credentials before accessing this content.
Article Available via CHORUS
Download Accepted Manuscript

Other Options

References (Subscription Required)

Outline

Information

Phys. Rev. E 107, L052602– Published 18 May, 2023
  • Received 30 November 2022
  • Accepted 25 April 2023
Crossmark - Check for updates button

©2023 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation