Cited by 11Electrochemical Analysis and ApplicationsElectrochemical sensors and biosensorsElectrostatics and Colloid Interactions

Computer-Assisted Processing of Current Step Signals in Single Blocking Impact Electrochemistry

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Langlard, Arthur, Smida, Hassiba, Chevalet, Romain, Thobie-Gautier, Christine, Boujtita, Mohammed, Lebègue, Estelle·2024·ACS Measurement Science Au

Abstract

High Resolution Image Download MS PowerPoint Slide Current step signals related to single-entity collisions in blocking impact electrochemistry were analyzed by computer-assisted processing for estimating the size distributions of various particles. In this work, three different types of entities were studied by single blocking impact electrochemistry: polystyrene nanospheres (350 nm diameter) and microspheres (1 μm diameter), phospholipid liposomes (300 nm diameter) and two different strains of Gram-negative bacillus bacteria ( Escherichia coli and Shewanella oneidensis ). The size estimations of these different entities from the current step signal analysis were compared and discussed according to the shape and size of each entity. From the magnitude of the current step transient, the size distribution of each entity was calculated by a new computer program assisting in the detection and analysis of single impact events in chronoamperometry measurements. The data processing showed that the size distributions obtained from the electrochemical data agreed with the dynamic light scattering and atomic force microscopy data for nanospheres and liposomes. In contrast, the size estimation calculated from the electrochemical data was underestimated for microspheres and bacteria. We demonstrated that our computer program was efficient for detecting and analyzing the collision events in single blocking impact electrochemistry for various entities from spherical hard nanoparticles to micrometer-sized rod-shaped living bacteria.

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Authors
Langlard, A., Smida, H., Chevalet, R., Thobie-Gautier, C., Boujtita, M., & Lebègue, E.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Nantes Université, CNRS, CEISAM, UMR 6230, F-44000 Nantes, France
Corresponding author
Lebègue, Estelle
Venue
ACS Measurement Science Au
Published
2024-09-06
Volume
4
Issue
5
Pages
585-592
ISSN
2694-250X (ISSN-L)
OpenAlex
W4402301528
Cited by
11
References
40
Citations by year
2026: 6 · 2025: 5
FWCI
1.41
Type
journal article
Language
en
Open access
Locations
  • ACS Measurement Science Au (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Agence Nationale de la Recherche (ANR-21-CE42-0007-01)
  • Conseil Régional des Pays de la Loire
Topics
  • Physical Sciences › Chemistry › Electrochemistry › Electrochemical Analysis and Applications
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrochemical sensors and biosensors
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Electrostatics and Colloid Interactions
Keywords
particle size distribution, chronoamperometry, polystyrene nanospheres, polystyrene microspheres, phospholipid liposomes, Escherichia coli, Shewanella oneidensis, computer-assisted data analysis, rod-shaped bacteria

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