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Electrochemical and chronoamperometry assessment of nano‑gold sensor surfaces produced via novel laser fabrication methods

Hughes, Cian orcid logoORCID: 0000-0002-4863-733X, McCann, Ronán orcid logoORCID: 0000-0002-2071-0785, Freeland, Brian orcid logoORCID: 0000-0003-3705-5745 and Brabazon, Dermot orcid logoORCID: 0000-0003-3214-6381 (2020) Electrochemical and chronoamperometry assessment of nano‑gold sensor surfaces produced via novel laser fabrication methods. Journal of Electroanalytical Chemistry, 880 . ISSN 1572-6657

Abstract
New developments in laser ablation have shown great potential as nanofabrication methodologies, offering many significant advantages over more traditional methods. Herein, we have developed a method for applying two of these techniques, confined atmospheric pulsed-laser (CAP) deposition and laser ablation synthesis in solution (LASiS), to the fabrication of a nanostructured sensor platform. Following deposition, additional steps were then used to crosslink the deposited nanostructures and fabricate counter and reference electrodes. Chronoamperometry and cyclic voltammetry (CV) were used to assess the effects of these crosslinking steps on the properties of the sensor surfaces. These experiments resulted in the development of a simple, inexpensive and readily scalable process for the fabrication of 3-electrode sensor systems. As an example of a readily measurable surface interaction, electrochemical impedance spectroscopy (EIS) was applied to demonstrate the use of these systems in the detection of 6-mercaptohexanol. This interaction was examined in real-time by measuring the change in the EIS of the sensor system over time following its exposure to the thiol. This experiment clearly showed a measurable EIS response, demonstrating the effectiveness of these newly fabricated sensors for the detection of a simple surface interaction and suggesting the future potential of these laser based methods as the basis for an inexpensive, facile, rapid and scalable sensor fabrication process.
Metadata
Item Type:Article (Published)
Refereed:Yes
Additional Information:Article number: 114813.
Uncontrolled Keywords:Electrochemistry; Sensor, Biosensor; Sensor surface, Nanotechnology; Nanoparticles; Nanostructures; Colloidal nanoparticles; AuNPs; Nanofabrication, Laser deposition, Laser ablation; LASiS; Cap; PLD, Electrochemical impedance spectroscopy; EIS; Chronoamperometry; Sensor fabrication; Novel methods
Subjects:Biological Sciences > Biosensors
Engineering > Materials
Engineering > Mechanical engineering
Engineering > Production engineering
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Mechanical and Manufacturing Engineering
Research Initiatives and Centres > Advanced Processing Technology Research Centre (APTRC)
Research Initiatives and Centres > I-Form
Publisher:Elsevier
Official URL:https://doi.org/10.1016/j.jelechem.2020.114813
Copyright Information:© 2020 The Author
Funders:Science Foundation Ireland (SFI) under Grant Number 12/IA/1576.
ID Code:26098
Deposited On:10 Aug 2021 14:08 by Dermot Brabazon . Last Modified 21 Nov 2023 11:28
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