Autor según el artículo: Alvarado M, La Flor S, Llobet E, Romero A, Ramírez JL.

Departamento: Enginyeria Electrònica, Elèctrica i Automàtica

Autor/es de la URV: De la Flor Lopez, Silvia / Llobet Valero, Eduard / Ramírez Falo, José Luis / Romero Nevado, Alfonso José

Palabras clave: Polymeric substrate Nanowires Metal oxide Gas sensor Flexible sensor Bending tests nanowires metal oxide gas sensor flexible sensor bending tests

Resumen: Many sensors are developed over flexible substrates to be used as wearables, which does not guarantee that they will actually withstand being bent. This work evaluates the gas sensing performance of metal oxide devices of three different types, before and after having undergone automated, repetitive bending tests. These tests were aimed at demonstrating that the fabricated sensors were actually flexible, which cannot be taken for granted beforehand. The active layer in these sensors consisted of WO3 nanowires (NWs) grown directly over a Kapton foil by means of the aerosol-assisted chemical vapor deposition. Their response to different H2 concentrations was measured at first. Then, they were cyclically bent, and finally, their response to H2 was measured again. Sensors based on pristine WO3-NWs over Ag electrodes and on Pd-decorated NWs over Au electrodes maintained their performance after having been bent. Ag electrodes covered with Pd-decorated NWs became fragile and lost their usefulness. To summarize, two different types of truly flexible metal oxide gas sensor were fabricated, whereas a third one was not flexible, despite being grown over a flexible substrate following the same method. Finally, we recommend that one standard bending test procedure should be established to clearly determine the flexibility of a sensor considering its intended application.

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/

ISSN: 14248220

Direcció de correo del autor: silvia.delaflor@urv.cat alfonsojose.romero@urv.cat joseluis.ramirez@urv.cat eduard.llobet@urv.cat

Identificador del autor: 0000-0002-6851-1371 0000-0003-3502-0813 0000-0001-8231-4019 0000-0001-6164-4342

Fecha de alta del registro: 2023-02-18

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://www.mdpi.com/1424-8220/19/23/5190

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Sensors. 19 (23):

Referencia de l'ítem segons les normes APA: Alvarado M, La Flor S, Llobet E, Romero A, Ramírez JL. (2019). Performance of Flexible Chemoresistive Gas Sensors after Having Undergone Automated Bending Tests. Sensors, 19(23), -. DOI: 10.3390/s19235190

DOI del artículo: 10.3390/s19235190

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2019

Tipo de publicación: Journal Publications