Drop-coated sensing layers on ultra low power hotplates for an RFID flexible tag microlab
| Autor: | Radu Ionescu, R. Leghrib, J.L. Ramírez, Xavier Vilanova, Ivan Elmi, Gian Carlo Cardinali, Eduard Llobet, E. Abad, E.H. Espinosa, Stefano Zampolli |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Analytical chemistry Oxide engineering.material chemistry.chemical_compound Coating Response stability Materials Chemistry Ultra low power gas sensors Radio-frequency identification Electrical and Electronic Engineering Instrumentation Ultra low power business.industry Drop (liquid) Metals and Alloys Condensed Matter Physics Tin oxide Surfaces Coatings and Films Electronic Optical and Magnetic Materials Membrane chemistry Power consumption engineering Optoelectronics Metal oxides business Fruit monitoring |
| Zdroj: | Sensors and actuators. B, Chemical 144 (2010): 462–466. doi:10.1016/j.snb.2009.07.005 info:cnr-pdr/source/autori:Espinosa E; Ionescu R; Zampolli S; Elmi I; Cardinali GC; Abad E; Leghrib R; Ramirez JL; Vilanova X; Llobet E/titolo:Drop-coated sensing layers on ultra low power hotplates for an RFID flexible tag microlab/doi:10.1016%2Fj.snb.2009.07.005/rivista:Sensors and actuators. B, Chemical (Print)/anno:2010/pagina_da:462/pagina_a:466/intervallo_pagine:462–466/volume:144 |
| ISSN: | 0925-4005 |
| Popis: | We report on the coating of a 4-element integrated array Of ultra low power hotplate (ULPH) gas sensors with different metal oxide layers. The sensors are designed to be onboard of a radio frequency identification (RFID) flexible tag aimed at monitoring climacteric fruit during transport and vending. The architecture of these microsensors is briefly discussed, the method for coating the ULPH membranes is described and the functionality of the sensors for the application sought is shown. It is shown that a 4-element ULPH coated with tin oxide and tungsten oxide sensors is highly sensitive to the gases relevant for the application. The microarray allows for discriminating among ethylene, acetaldehyde, ethanol and ammonia using simple discriminant factor analysis. Power consumption is low (7 mW per microsensor @ 350 degrees C) and sensor characteristics are shown to remain stable over a three-month period. |
| Databáze: | OpenAIRE |
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