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Shape dependent phoretic propulsion of slender active particles

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Shape dependent phoretic propulsion of slender active particles. / Ibrahim, Yahaya; Golestanian, Ramin; Liverpool, Tanniemola.

In: Physical Review Fluids, Vol. 3, No. 3, 033101, 03.2018.

Research output: Contribution to journalArticle (Academic Journal)

Harvard

Ibrahim, Y, Golestanian, R & Liverpool, T 2018, 'Shape dependent phoretic propulsion of slender active particles', Physical Review Fluids, vol. 3, no. 3, 033101. https://doi.org/10.1103/PhysRevFluids.3.033101

APA

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Author

Ibrahim, Yahaya ; Golestanian, Ramin ; Liverpool, Tanniemola. / Shape dependent phoretic propulsion of slender active particles. In: Physical Review Fluids. 2018 ; Vol. 3, No. 3.

Bibtex

@article{8a016f9758c04eb2910759be37a3be87,
title = "Shape dependent phoretic propulsion of slender active particles",
abstract = "We theoretically study the self-propulsion of a thin (slender) colloid driven by asymmetric chemical reactions on its surface at vanishing Reynolds number. Using the method of matched asymptotic expansions, we obtain the colloid self-propulsion velocity as a function of its shape and surface physico-chemical properties. The mechanics of self-phoresis for rod-like swimmers has a richer spectrum of behaviours than spherical swimmers due to the presence of two small length scales, the slenderness of the rod and the width of the slip layer. This leads to subtleties in taking the limit of vanishing slenderness. As a result, even for very thin rods, the distribution of curvature along the surface of the swimmer, namely its shape, plays a surprising role in determining the efficiency of propulsion. We find that thin cylindrical self-phoretic swimmers with blunt ends move faster than thin prolate spheroid shaped swimmers with the same aspect ratio. ",
keywords = "Synthetic biology",
author = "Yahaya Ibrahim and Ramin Golestanian and Tanniemola Liverpool",
year = "2018",
month = mar,
doi = "10.1103/PhysRevFluids.3.033101",
language = "English",
volume = "3",
journal = "Physical Review Fluids",
issn = "2469-990X",
publisher = "American Physical Society (APS)",
number = "3",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Shape dependent phoretic propulsion of slender active particles

AU - Ibrahim, Yahaya

AU - Golestanian, Ramin

AU - Liverpool, Tanniemola

PY - 2018/3

Y1 - 2018/3

N2 - We theoretically study the self-propulsion of a thin (slender) colloid driven by asymmetric chemical reactions on its surface at vanishing Reynolds number. Using the method of matched asymptotic expansions, we obtain the colloid self-propulsion velocity as a function of its shape and surface physico-chemical properties. The mechanics of self-phoresis for rod-like swimmers has a richer spectrum of behaviours than spherical swimmers due to the presence of two small length scales, the slenderness of the rod and the width of the slip layer. This leads to subtleties in taking the limit of vanishing slenderness. As a result, even for very thin rods, the distribution of curvature along the surface of the swimmer, namely its shape, plays a surprising role in determining the efficiency of propulsion. We find that thin cylindrical self-phoretic swimmers with blunt ends move faster than thin prolate spheroid shaped swimmers with the same aspect ratio.

AB - We theoretically study the self-propulsion of a thin (slender) colloid driven by asymmetric chemical reactions on its surface at vanishing Reynolds number. Using the method of matched asymptotic expansions, we obtain the colloid self-propulsion velocity as a function of its shape and surface physico-chemical properties. The mechanics of self-phoresis for rod-like swimmers has a richer spectrum of behaviours than spherical swimmers due to the presence of two small length scales, the slenderness of the rod and the width of the slip layer. This leads to subtleties in taking the limit of vanishing slenderness. As a result, even for very thin rods, the distribution of curvature along the surface of the swimmer, namely its shape, plays a surprising role in determining the efficiency of propulsion. We find that thin cylindrical self-phoretic swimmers with blunt ends move faster than thin prolate spheroid shaped swimmers with the same aspect ratio.

KW - Synthetic biology

UR - https://arxiv.org/abs/1711.06126

U2 - 10.1103/PhysRevFluids.3.033101

DO - 10.1103/PhysRevFluids.3.033101

M3 - Article (Academic Journal)

VL - 3

JO - Physical Review Fluids

JF - Physical Review Fluids

SN - 2469-990X

IS - 3

M1 - 033101

ER -