Plasmonic optical fiber for bacteria manipulation—characterization and visualization of accumulation behavior under plasmo-thermal trapping
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Supporting information
Published version
Author(s)
Kim, Jang
Yeatman, Eric
Thompson, Alex
Type
Journal Article
Abstract
In this article, we demonstrate a plasmo-thermal bacterial accumulation effect using
a miniature plasmonic optical fiber. Combined action of far-field convection and a near-field
trapping force (referred to as thermophoresis)—induced by highly localized plasmonic
heating—enabled large-area accumulation of Escherichia coli. The estimated thermophoretic
trapping force agreed with previous reports, and we applied speckle imaging analysis to map
the in-plane bacterial velocities over large areas. This is the first time that spatial mapping of
bacterial velocities has been achieved in this setting. Thus, this analysis technique provides
opportunities to better understand this phenomenon and to drive it towards in vivo applications.
a miniature plasmonic optical fiber. Combined action of far-field convection and a near-field
trapping force (referred to as thermophoresis)—induced by highly localized plasmonic
heating—enabled large-area accumulation of Escherichia coli. The estimated thermophoretic
trapping force agreed with previous reports, and we applied speckle imaging analysis to map
the in-plane bacterial velocities over large areas. This is the first time that spatial mapping of
bacterial velocities has been achieved in this setting. Thus, this analysis technique provides
opportunities to better understand this phenomenon and to drive it towards in vivo applications.
Date Issued
2021-07-01
Date Acceptance
2021-05-01
Citation
Biomedical Optics Express, 2021, 12 (7), pp.3917-3933
ISSN
2156-7085
Publisher
The Optical Society
Start Page
3917
End Page
3933
Journal / Book Title
Biomedical Optics Express
Volume
12
Issue
7
Copyright Statement
© 2021 The Author(s). Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Furtherdistribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
National Institute of Health Research
Identifier
https://www.osapublishing.org/boe/abstract.cfm?doi=10.1364/BOE.425405
Grant Number
EP/P012779/1
Subjects
0205 Optical Physics
0912 Materials Engineering
Publication Status
Published
Date Publish Online
2021-05-20