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Plasmonic optical fiber for bacteria manipulation—characterization and visualization of accumulation behavior under plasmo-thermal trapping

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Title: Plasmonic optical fiber for bacteria manipulation—characterization and visualization of accumulation behavior under plasmo-thermal trapping
Authors: Kim, J
Yeatman, E
Thompson, A
Item 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.
Issue Date: 1-Jul-2021
Date of Acceptance: 1-May-2021
URI: http://hdl.handle.net/10044/1/88917
DOI: 10.1364/boe.425405
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
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
National Institute of Health Research
Funder's Grant Number: EP/P012779/1
Keywords: 0205 Optical Physics
0912 Materials Engineering
Publication Status: Published
Online Publication Date: 2021-05-20
Appears in Collections:Department of Surgery and Cancer
Electrical and Electronic Engineering
Faculty of Medicine
Institute of Global Health Innovation
Faculty of Natural Sciences
Faculty of Engineering



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