Autor segons l'article: Estivill, MC; Baez, JF; Blondeau, P; Andrade, FJ
Departament: Química Física i Inorgànica
Autor/s de la URV: Andrade, Francisco Javier / Blondeau, Pascal Jean Claude Leon
Paraules clau: Solid-state sensors Pseudo-capacitors Polyelectrolyte membranes Mixed potential changes Mixed potential Capacitive biosensors solid-state sensors sensor pseudo-capacitors potentiometric response polyelectrolyte membranes platinum oxygen reduction monitoring glucose mixed potential mechanism electrodes arrays
Resum: A novel electrochemical cell design in a vertically stacked configuration is presented. Through a layered structure using a top macroporous working electrode, a polyelectrolyte, and a bottom metallic conductor a standalone electrochemical cell with an internal reference electrode is built. This sensor allows monitoring an electrochemical property of an external solution with only one electrode in direct contact with the sample. Using paper-based platinum electrode for the porous top electrode and Nafion as polyelectrolyte material, the self-powered detection of hydrogen peroxide is performed. The system can be operated in multiple modes. In a capacitive way, the open circuit potential is measured. Alternatively, in a self-powered current mode, the system emulates a fuel cell. Additionally, a potential-current switched mode is also demonstrated. Because of this unique design and operational features this sensor is considered as an electrochemical pixel. To further demonstrate the advantages of this device, the detection of glucose is performed by building an array of sensors using a single back (reference) electrode and multiple working electrodes. These results lay the groundwork for the development of a new generation of simple and low cost biochemical sensors and electrochemical sensing arrays.Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.
Àrees temàtiques: Química Nanoscience and nanotechnology Nanoscience & nanotechnology Medicine (miscellaneous) Medicina ii Medicina i Materiais Interdisciplinar Farmacia Engenharias iv Engenharias iii Engenharias ii Electrochemistry Economia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Chemistry, analytical Biotecnología Biotechnology & applied microbiology Biotechnology Biophysics Biomedical engineering Biodiversidade Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: pascal.blondeau@urv.cat franciscojavier.andrade@urv.cat
Identificador de l'autor: 0000-0003-1331-5055 0000-0003-1199-2837
Data d'alta del registre: 2024-02-18
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://www.sciencedirect.com/science/article/pii/S0956566323008199
URL Document de llicència: http://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Biosensors & Bioelectronics. 246 115877-115877
Referència de l'ítem segons les normes APA: Estivill, MC; Baez, JF; Blondeau, P; Andrade, FJ (2024). Electrochemical Pixels: Semi-open electrochemical cells with a vertically stacked design. Biosensors & Bioelectronics, 246(), 115877-115877. DOI: 10.1016/j.bios.2023.115877
DOI de l'article: 10.1016/j.bios.2023.115877
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2024
Tipus de publicació: Journal Publications
Repositori URV