Cited by 46Electrochemical Analysis and ApplicationsElectrochemical sensors and biosensorsMicrobial Fuel Cells and Bioremediation

Blocking electrochemical collisions of single E. coli and B. subtilis bacteria at ultramicroelectrodes elucidated using simultaneous fluorescence microscopy

Ronspees, Austin T., Thorgaard, Scott N.·2018·Electrochimica Acta

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Crossref · 10.1016/j.electacta.2018.05.006

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39 of 39 references verified0 citation errors · 0 not checkable

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  • Blip-shaped collision transients for B. subtilis are due to short-lived bounce events of bacteria at the UME, in contrast with step-shaped transients due to adsorption of E. coli at the UME.

    “Based on the simultaneous fluorescence microscopy imaging (Fig. 1c), these blip-shaped collision transients are due to short-lived bounce events of bacteria at the UME, in contrast with the step-shaped transients observed in Fig. 1b due to the adsorption of E. coli at the UME [30].”
  • The magnitude of current steps in blocking impact experiments depends on the size of the blocking object, the size of the UME, the type and concentration of the redox probe, and the location of the blocking object adsorbed onto the UME.

    “The magnitude of the current steps in blocking impact experiments depends on the size of the blocking object, the size of the UME, the type and the concentration of the redox probe, and the location of the blocking object adsorbed onto the UME [30,35].”
  • The current step for E. coli adsorption corresponds to the blocking effect on the diffusive flux of FcM to the UME surface, as the redox probe is no longer available for oxidation to FcM+.

    “This corresponds to the blocking effect on the diffusive flux of FcM to the UME surface, as the redox probe is no longer available for undergoing oxidation to ferroceniummethanol (FcM + ) [30].”
  • Since 2015, most reports in single-impact electrochemistry of bacteria concern E. coli as a model bacterium.

    “Since 2015, most of the reports in this area concern Escherichia coli (E.coli) as a model bacterium but this sensitive electro-analytical technique has not proved to be efficient for selective detection yet, except for the discrimination between Grampositive and Gram-negative bacteria [30,32].”
  • Ronspees et al. investigated blocking electrochemical collisions of single E. coli and B. subtilis using simultaneous fluorescence microscopy.

    “Ronspees et al. have investigated blocking electrochemical collisions of single E. coli (Gram-negative bacteria) and Bacillus subtilis (B.subtilis, a Gram-positive bacteria) using simultaneous fluorescence microscopy (Fig. 1) [30].”

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Authors
Ronspees, A. T., & Thorgaard, S. N.
Affiliations
Grand Valley State University (US)
Corresponding author
Thorgaard, Scott N.
Venue
Electrochimica Acta
Publisher
Elsevier BV
Published
2018-07
Volume
278
Pages
412-420
ISSN
0013-4686 (ISSN-L)
OpenAlex
W2801276649
Cited by
46
References
39
Citations by year
2026: 5 · 2025: 2 · 2024: 7 · 2023: 9 · 2022: 6 · 2021: 4 · 2020: 8 · 2019: 3 · 2018: 2
FWCI
2.03
Type
journal article
Language
en
Open access
closed
Locations
Electrochimica Acta (publishedVersion)
Funders
Grand Valley State University
Topics
  • Physical Sciences › Chemistry › Electrochemistry › Electrochemical Analysis and Applications
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrochemical sensors and biosensors
  • Physical Sciences › Environmental Science › Environmental Engineering › Microbial Fuel Cells and Bioremediation
Keywords
single-bacteria detection, ultramicroelectrodes, Escherichia coli, Bacillus subtilis, bacterial adsorption, current transients, fluorescence microscopy

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