Shape-Dependent Motion of Structured Photoactive Microswimmers

Dylan Nicholls; Andrew Deverse; Ra'Shae Esplin; John Castañeda; Yoseph Loyd; Raaman Nair; Robert Voinescu; Chao Zhou; Wei Wang; John G. Gibbs

doi:10.1021/acsami.8b01940

Shape-Dependent Motion of Structured Photoactive Microswimmers

Dylan Nicholls, Andrew Deverse, Ra'Shae Esplin, John Castañeda, Yoseph Loyd, Raaman Nair, Robert Voinescu, Chao Zhou, Wei Wang, John G. Gibbs

Applied Physics and Materials Science

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

We investigate the dynamics of structured photoactive microswimmers and show that morphology sensitively determines the swimming behavior. Particular to this study, a major portion of the light-activated particles' underlying structure is built from a photocatalytic material, made possible by dynamic physical vapor deposition (DPVD). We find that swimmers of this type exhibit unique shape-dependent autonomous swimming that is distinct from what is seen in systems with similar structural morphology but not fabricated directly from the catalyst. Notably, the direction of motion is a function of these parameters. Because the swimming behavior is strongly correlated with particle shape and material composition, DPVD allows for engineering small-scale propulsion by adjusting the fabrication parameters to match the desired performance.

Original language	English (US)
Pages (from-to)	18050-18056
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	10
Issue number	21
DOIs	https://doi.org/10.1021/acsami.8b01940
State	Published - May 30 2018

Keywords

active colloids
active matter
light-activated particles
self-propulsion
shape-dependent motion
titanium dioxide

ASJC Scopus subject areas

General Materials Science

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10.1021/acsami.8b01940

Cite this

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title = "Shape-Dependent Motion of Structured Photoactive Microswimmers",

abstract = "We investigate the dynamics of structured photoactive microswimmers and show that morphology sensitively determines the swimming behavior. Particular to this study, a major portion of the light-activated particles' underlying structure is built from a photocatalytic material, made possible by dynamic physical vapor deposition (DPVD). We find that swimmers of this type exhibit unique shape-dependent autonomous swimming that is distinct from what is seen in systems with similar structural morphology but not fabricated directly from the catalyst. Notably, the direction of motion is a function of these parameters. Because the swimming behavior is strongly correlated with particle shape and material composition, DPVD allows for engineering small-scale propulsion by adjusting the fabrication parameters to match the desired performance.",

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AU - Deverse, Andrew

AU - Esplin, Ra'Shae

AU - Castañeda, John

AU - Loyd, Yoseph

AU - Nair, Raaman

AU - Voinescu, Robert

AU - Zhou, Chao

AU - Wang, Wei

AU - Gibbs, John G.

PY - 2018/5/30

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KW - shape-dependent motion

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Shape-Dependent Motion of Structured Photoactive Microswimmers

Abstract

Keywords

ASJC Scopus subject areas

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