78004 20190227103821.0 doi 10.1016/j.snb.2014.04.038 sideral 86666 ART-2014-86666 eng García-Romeo, D. Universidad de Zaragoza Portable low-power electronic interface for explosive detection using microcantilevers 2014 Access copy available to the general public Unrestricted Microcantilevers have been recently revealed as a highly effective technique for gas detection at trace level when acting as chemical sensors. However, an important milestone still remains to achieve a full-scale development in commercial applications: the cumbersome systems traditionally used to read-out its responses. To accomplish this, a portable low-power electronic interface, based on an analog lock-in amplifier processing square signals, which is fully capable of creating the excitation signal as well as obtaining the response values from resonating microcantilevers functionalized with zeolite based coatings has been herein attempted. The so obtained read-out results are in good agreement with the commercial lock-in amplifier's measurements, demonstrating the accuracy and reliability of the electronic interface. Finally, its performance has been validated for 2-nitrotoluene (o-MNT) detection at ppm V level, as an example of an explosive-related molecule, with BEA zeolite coated microcantilevers. Theoretical limit of detection (LOD) values below 100 ppb have been obtained for Co exchanged BEA modified sensors. info:eu-repo/grantAgreement/ES/MINECO/CTQ2010-19276 info:eu-repo/grantAgreement/ES/MINECO-FEDER/TEC2012-30802 info:eu-repo/grantAgreement/ES/MINECO/RYC-2008-03185 info:eu-repo/grantAgreement/ES/UZ/JIUZ-2013-TEC-06 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 4.097 2014 CHEMISTRY, ANALYTICAL 8 / 74 = 0.108 2014 Q1 T1 INSTRUMENTS & INSTRUMENTATION 3 / 56 = 0.054 2014 Q1 T1 ELECTROCHEMISTRY 6 / 28 = 0.214 2014 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0002-8448-7543 Pellejero, I. (orcid)0000-0002-4931-1358 Urbiztondo, M. A. Universidad de Zaragoza (orcid)0000-0002-7742-9329 Sesé, J. Universidad de Zaragoza (orcid)0000-0001-9897-6527 Pina, M. P. Universidad de Zaragoza (orcid)0000-0001-6642-3792 Martínez, P. A. Universidad de Zaragoza (orcid)0000-0003-2361-1077 Calvo, B. Universidad de Zaragoza (orcid)0000-0002-5380-3013 Medrano, N. Universidad de Zaragoza 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 5008 X Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Proy. investigación JBA 5008 250 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Electrónica 5005 790 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Tecnologi. Medio Ambiente 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 200 (2014), 31-38 Sens. actuators, B, Chem. SENSORS AND ACTUATORS B-CHEMICAL 0925-4005 728790 http://zaguan.unizar.es/record/78004/files/texto_completo.pdf Postprint 88792 http://zaguan.unizar.es/record/78004/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:78004 articulos driver 2019-02-27-10:20:12 ARTICLE