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Sensors (Basel)

Title:		Acoustic Sensors Based on Amino-Functionalized Nanoparticles to Detect Volatile Organic Solvents
Author(s):		Matatagui D; Kolokoltsev O; Saniger JM; Gracia I; Fernandez MJ; Fontecha JL; Horrillo MDC;
Address:		"Centro de Ciencias Aplicadas y Dessarrollo Tecnologico (CCADET), UNAM, 04510 Ciudad de Mexico, Mexico. daniel.matatagui@ccadet.unam.mx. Centro de Ciencias Aplicadas y Dessarrollo Tecnologico (CCADET), UNAM, 04510 Ciudad de Mexico, Mexico. oleg.kolokoltsev@ccadet.unam.mx. Centro de Ciencias Aplicadas y Dessarrollo Tecnologico (CCADET), UNAM, 04510 Ciudad de Mexico, Mexico. jose.saniger@ccadet.unam.mx. Instituto de Microelectronica de Barcelona (IMB), CSIC, Campus UAB, 08193 Bellaterra, Spain. isabel.gracia@imb-cnm.csic.es. Instituto de Tecnologias Fisicas y de la Informacion (ITEFI), CSIC, Serrano 144, 28006 Madrid, Spain. m.j.fernandez@csic.es. Instituto de Tecnologias Fisicas y de la Informacion (ITEFI), CSIC, Serrano 144, 28006 Madrid, Spain. joseluis.fontecha@csic.es. Instituto de Tecnologias Fisicas y de la Informacion (ITEFI), CSIC, Serrano 144, 28006 Madrid, Spain. carmen.horrillo.guemes@csic.es"
Journal Title:		Sensors (Basel)
Year:		2017
Volume:		20171114
Issue:		11
Page Number:		-
DOI:		10.3390/s17112624
ISSN/ISBN:		1424-8220 (Electronic) 1424-8220 (Linking)
Abstract:		"Love-wave gas sensors based on surface functionalized iron oxide nanoparticles has been developed in this research. Amino-terminated iron oxide nanoparticles were deposited, by a spin coating technique, onto the surface of Love-wave sensors, as a very reproducible gas-sensing layer. The gases tested were organic solvents, such as butanol, isopropanol, toluene and xylene, for a wide and low concentration range, obtaining great responses, fast response times of a few minutes (the time at which the device produced a signal change equal to 90%), good reproducibilities, and different responses for each detected solvent. The estimated limits of detection obtained have been very low for each detected compound, about 1 ppm for butanol, 12 ppm for isopropanol, 3 ppm for toluene and 0.5 ppm for xylene. Therefore, it is demonstrated that this type of acoustic wave sensor, with surface amino-functionalized nanoparticles, is a good alternative to those ones functionalized with metal nanoparticles, which result very expensive sensors to achieve worse results"
Keywords:		Love wave functionalized-nanoparticles gas sensor solvent spin coating surface acoustic wave;
Notes:		"PubMed-not-MEDLINEMatatagui, Daniel Kolokoltsev, Oleg Saniger, Jose Manuel Gracia, Isabel Fernandez, Maria Jesus Fontecha, Jose Luis Horrillo, Maria Del Carmen eng Switzerland 2017/11/15 Sensors (Basel). 2017 Nov 14; 17(11):2624. doi: 10.3390/s17112624"