Characterization of bacteria swarming effect under plasmonic optical fiber illumination.
bacteria manipulation
drug delivery
optical fiber
plasmo-thermo-electrophoresis
plasmonics
two-photon polymerization
Journal
Journal of biomedical optics
ISSN: 1560-2281
Titre abrégé: J Biomed Opt
Pays: United States
ID NLM: 9605853
Informations de publication
Date de publication:
07 2023
07 2023
Historique:
received:
05
04
2023
revised:
30
06
2023
accepted:
30
06
2023
medline:
21
7
2023
pubmed:
20
7
2023
entrez:
20
7
2023
Statut:
ppublish
Résumé
Plasmo-thermo-electrophoresis (PTEP) involves using plasmonic microstructures to generate both a large-scale convection current and a near-field attraction force (thermo-electrophoresis). These effects facilitate the collective locomotion (i.e., swarming) of microscale particles in suspension, which can be utilized for numerous applications, such as particle/cell manipulation and targeted drug delivery. However, to date, PTEP for ensemble manipulation has not been well characterized, meaning its potential is yet to be realized. Our study aims to provide a characterization of PTEP on the motion and swarming effect of various particles and bacterial cells to allow rational design for bacteria-based microrobots and drug delivery applications. Plasmonic optical fibers (POFs) were fabricated using two-photon polymerization. The particle motion and swarming behavior near the tips of optical fibers were characterized by image-based particle tracking and analyzing the spatiotemporal concentration variation. These results were further correlated with the shape and surface charge of the particles defined by the zeta potential. The PTEP demonstrated a drag force ranging from a few hundred fN to a few tens of pN using the POFs. Furthermore, bacteria with the greater (negative) zeta potential ( The characterization of PTEP-based bacteria swarming behavior investigated in our study can help predict the expected swarming behavior of given particles/bacterial cells. As such, this may aid in realizing the potential of PTEP in the wide-ranging applications highlighted above.
Identifiants
pubmed: 37469830
doi: 10.1117/1.JBO.28.7.075003
pii: 230094GR
pmc: PMC10353699
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
075003Subventions
Organisme : Department of Health
Pays : United Kingdom
Informations de copyright
© 2023 The Authors.
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