Author, as appears in the article.: Sola-Penaftel, N; Manyosa, X; Navarrete, E; Ramos-Castro, J; Jimenez, V; Bermejo, S; Gracia, I; Llobet, E; Dominguez-Pumar, M
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Llobet Valero, Eduard / Navarrete Gatell, Èric
Keywords: Quantitative-analysis Metal oxide Gas sensor Dielectric excitation Control metal oxide dielectric excitation control arrays ammonia
Abstract: The objective of this paper is to apply a closed-loop control based on dielectric excitation to MOX gas sensors in order to improve their response time. The control implements a feedback loop in which temperature modulations keep constant the sensor reactance, measured at constant temperature. The required fast temperature switching has been implemented on MEMS microhotplates. The mean temperature generated by the control is the new output signal. This technique is applied to an in-house sensor made of WO3 nanowires decorated with gold nanoparticles to detect NH3 and to a commercial MEMS MOX sensor (CCS801).
Thematic Areas: Surfaces, coatings and films Spectroscopy Química Odontología Nutrição Metals and alloys Medicina ii Medicina i Materials chemistry Materiais Interdisciplinar Instruments & instrumentation Instrumentation Farmacia Engenharias iv Engenharias iii Engenharias ii Engenharias i Electronic, optical and magnetic materials Electrochemistry Electrical and electronic engineering Educação física Educação Economia Condensed matter physics Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, analytical Biotecnología Biodiversidade Astronomia / física Analytical chemistry
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: eric.navarrete@urv.cat eric.navarrete@urv.cat eduard.llobet@urv.cat
Author identifier: 0000-0001-6164-4342
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/acceptedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Sensors And Actuators B-Chemical. 365 131940-
APA: Sola-Penaftel, N; Manyosa, X; Navarrete, E; Ramos-Castro, J; Jimenez, V; Bermejo, S; Gracia, I; Llobet, E; Dominguez-Pumar, M (2022). Acceleration and drift reduction of MOX gas sensors using active sigma-delta controls based on dielectric excitation. Sensors And Actuators B-Chemical, 365(), 131940-. DOI: 10.1016/j.snb.2022.131940
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV