Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

On the use of pulsed uv or visible light activated gas sensing of reducing and oxidising species with wo3 and ws2 nanomaterials

  • Datos identificativos

    Identificador: imarina:9216922
    Autores:
    Gonzalez, ErnestoCasanova-Chafer, JuanAlagh, AanchalRomero, AlfonsoVilanova, XavierAcosta, SeleneCossement, DamienBittencourt, CarlaLlobet, Eduard
    Resumen:
    This paper presents a methodology to quantify oxidizing and reducing gases using n-type and p-type chemiresistive sensors, respectively. Low temperature sensor heating with pulsed UV or visible light modulation is used together with the application of the fast Fourier transform (FFT) to extract sensor response features. These features are further processed via principal component analysis (PCA) and principal component regression (PCR) for achieving gas discrimination and building concentration prediction models with R values up to 98% and RMSE values as low as 5% for the total gas concentration range studied. UV and visible light were used to study the influence of the light wavelength in the prediction model performance. We demonstrate that n-type and p-type sensors need to be used together for achieving good quantification of oxidizing and reducing species, respectively, since the semiconductor type defines the prediction model's effectiveness towards an oxidizing or reducing gas. The presented method reduces considerably the total time needed to quantify the gas concentration compared with the results obtained in a previous work. The use of visible light LEDs for performing pulsed light modulation enhances system performance and considerably reduces cost in comparison to previously reported UV light-based approaches. 2
  • Otros:

    Autor según el artículo: Gonzalez, Ernesto; Casanova-Chafer, Juan; Alagh, Aanchal; Romero, Alfonso; Vilanova, Xavier; Acosta, Selene; Cossement, Damien; Bittencourt, Carla; Llobet, Eduard
    Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/es de la URV: Alagh, Aanchal / Casanova Chafer, Juan / GONZÁLEZ GARCÍA, ELENA / Llobet Valero, Eduard / Romero Nevado, Alfonso José / Vilanova Salas, Javier
    Palabras clave: Sensor array Pulsed light modulation Performance Pcr Pca Oxide thin-films No2 Nh3 Nanoparticles Nanoneedles Growth Gas sensing Fft Fabrication Ammonia
    Resumen: This paper presents a methodology to quantify oxidizing and reducing gases using n-type and p-type chemiresistive sensors, respectively. Low temperature sensor heating with pulsed UV or visible light modulation is used together with the application of the fast Fourier transform (FFT) to extract sensor response features. These features are further processed via principal component analysis (PCA) and principal component regression (PCR) for achieving gas discrimination and building concentration prediction models with R values up to 98% and RMSE values as low as 5% for the total gas concentration range studied. UV and visible light were used to study the influence of the light wavelength in the prediction model performance. We demonstrate that n-type and p-type sensors need to be used together for achieving good quantification of oxidizing and reducing species, respectively, since the semiconductor type defines the prediction model's effectiveness towards an oxidizing or reducing gas. The presented method reduces considerably the total time needed to quantify the gas concentration compared with the results obtained in a previous work. The use of visible light LEDs for performing pulsed light modulation enhances system performance and considerably reduces cost in comparison to previously reported UV light-based approaches. 2
    Áreas temáticas: Zootecnia / recursos pesqueiros Química Medicine (miscellaneous) Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Linguística e literatura Letras / linguística Interdisciplinar Instruments & instrumentation Instrumentation Information systems Geografía Geociências Farmacia Engineering, electrical & electronic Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrochemistry Electrical and electronic engineering Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, analytical Biotecnología Biodiversidade Biochemistry Atomic and molecular physics, and optics Astronomia / física Arquitetura, urbanismo e design Analytical chemistry
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: juan.casanova@urv.cat aanchal.alagh@estudiants.urv.cat aanchal.alagh@estudiants.urv.cat eduard.llobet@urv.cat xavier.vilanova@urv.cat alfonsojose.romero@urv.cat
    Identificador del autor: 0000-0003-2466-8219 0000-0003-2466-8219 0000-0001-6164-4342 0000-0002-6245-7933 0000-0003-3502-0813
    Fecha de alta del registro: 2024-10-12
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Sensors. 21 (11): 3736-
    Referencia de l'ítem segons les normes APA: Gonzalez, Ernesto; Casanova-Chafer, Juan; Alagh, Aanchal; Romero, Alfonso; Vilanova, Xavier; Acosta, Selene; Cossement, Damien; Bittencourt, Carla; Ll (2021). On the use of pulsed uv or visible light activated gas sensing of reducing and oxidising species with wo3 and ws2 nanomaterials. Sensors, 21(11), 3736-. DOI: 10.3390/s21113736
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2021
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Analytical Chemistry,Atomic and Molecular Physics, and Optics,Biochemistry,Chemistry, Analytical,Electrical and Electronic Engineering,Electrochemistry,Engineering, Electrical & Electronic,Information Systems,Instrumentation,Instruments & Instrumentation,Medicine (Miscellaneous)
    Sensor array
    Pulsed light modulation
    Performance
    Pcr
    Pca
    Oxide thin-films
    No2
    Nh3
    Nanoparticles
    Nanoneedles
    Growth
    Gas sensing
    Fft
    Fabrication
    Ammonia
    Zootecnia / recursos pesqueiros
    Química
    Medicine (miscellaneous)
    Medicina veterinaria
    Medicina iii
    Medicina ii
    Medicina i
    Materiais
    Matemática / probabilidade e estatística
    Linguística e literatura
    Letras / linguística
    Interdisciplinar
    Instruments & instrumentation
    Instrumentation
    Information systems
    Geografía
    Geociências
    Farmacia
    Engineering, electrical & electronic
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Electrochemistry
    Electrical and electronic engineering
    Educação física
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Chemistry, analytical
    Biotecnología
    Biodiversidade
    Biochemistry
    Atomic and molecular physics, and optics
    Astronomia / física
    Arquitetura, urbanismo e design
    Analytical chemistry
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