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How to implement a selective colorimetric gas sensor with off the shelf components? Driau, Christian Fàbrega Gallego, Cristian Benito Altamirano, Ismael Pfeiffer, Peter Casals Guillén, Olga Li, Hongqiang Prades García, Juan Daniel Detectors de gasos Detectors òptics Gas detectors Optical detectors We report on how an inexpensive and very selective gas sensor can be implemented, simply combining colorimetric indicators casted on top of Scotch® tape, with a commercial microchip adapted here to measure optical reflectance. The system can be easily reproduced (leading to quantitatively consistent results), refreshed and reconfigured to sense different target gases, just replacing the colorimetric. 2019-05-22T11:07:51Z 2021-04-25T05:10:19Z 2019-04-25 2019-05-22T11:07:51Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 0925-4005 https://hdl.handle.net/2445/133692 689952 eng Versió postprint del document publicat a: https://doi.org/10.1016/j.snb.2019.04.117 Sensors and Actuators B-Chemical, 2019, vol. 293, p. 41-44 https://doi.org/10.1016/j.snb.2019.04.117 cc-by-nc-nd (c) Elsevier B.V., 2019 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess 4 p. application/pdf application/pdf Elsevier B.V. Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)