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Sensors (Basel)

Title:		Love Wave Sensors with Silver Modified Polypyrrole Nanoparticles for VOCs Monitoring
Author(s):		Setka M; Bahos FA; Matatagui D; Gracia I; Figueras E; Drbohlavova J; Vallejos S;
Address:		"CEITEC-Central European Institute of Technology, Brno University of Technology, 61200 Brno, Czech Republic. Instituto de Ciencias Aplicadas y Tecnologia (ICAT), Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Ciudad de Mexico 04510, Mexico. SENSAVAN, Instituto de Tecnologias Fisicas y de la Informacion (ITEFI, CSIC), Serrano 144, 28006 Madrid, Spain. Instituto de Microelectronica de Barcelona (IMB-CNM, CSIC), Campus UAB, 08193 Bellaterra, Spain"
Journal Title:		Sensors (Basel)
Year:		2020
Volume:		20200306
Issue:		5
Page Number:		-
DOI:		10.3390/s20051432
ISSN/ISBN:		1424-8220 (Electronic) 1424-8220 (Linking)
Abstract:		"Love wave sensors with silver-modified polypyrrole nanoparticles are developed in this work. These systems prove functional at room temperature with enhanced response, sensitivity and response time, as compared to other state-of-the-art surface acoustic wave (SAW) sensors, towards volatile organic compounds (VOCs). Results demonstrate the monitoring of hundreds of ppb of compounds such as acetone, ethanol and toluene with low estimated limits of detection (~3 ppb for acetone). These results are attributed to the use of silver-modified polypyrrole as a second guiding/sensitive layer in the Love wave sensor structure, which provides further chemically active sites for the gas-solid interactions. The sensing of low VOCs concentrations by micro sensing elements as those presented here could be beneficial in future systems for air quality control, food quality control or disease diagnosis via exhaled breath as the limits of detection obtained are within those required in these applications"
Keywords:		Biosensing Techniques/*instrumentation Calibration Electricity Gases/chemistry Nanoparticles/*chemistry/ultrastructure Polymers/*chemistry Pyrroles/*chemistry Silver/*chemistry Volatile Organic Compounds/*analysis gas sensors love wave sensors polypyrrole;
Notes:		"MedlineSetka, Milena Bahos, Fabio A Matatagui, Daniel Gracia, Isabel Figueras, Eduard Drbohlavova, Jana Vallejos, Stella eng 17-16531S/Grantova Agentura Ceske Republiky/ TEC2015-74329-JIN-(AEI/FEDER,EU)/Ministerio de Economia y Competitividad/ TEC2016-79898-C6-1-R (AEI/FEDER, EU)/Ministerio de Economia y Competitividad/ Ramon y Cajal/Ministerio de Economia y Competitividad/ Switzerland 2020/03/12 Sensors (Basel). 2020 Mar 6; 20(5):1432. doi: 10.3390/s20051432"