Print Email Facebook Twitter Toward a minituarized low-power micromechanical electronic nose Title Toward a minituarized low-power micromechanical electronic nose Author Karabaçak, D. Sieben-Xu, L. Vandecasteele, M. van Andel, Y. Wouters, D. Calama, M.C. Brongersma, S.H. Publication year 2012 Abstract An electronic nose based on an array of vibrating doubly clamped beams is proposed. These very high aspect ratio (length/thickness) suspended resonators can be individually functionalized by applying polymer coatings with an inkjet printing approach. The absorption of volatile compounds induces a swelling of the polymers that result in axial stress formation and a shift of the resonance frequency. Furthermore, integrated piezoelectric transducers are used for both actuating the resonators, as well as monitoring their resonance frequency in an oscillator loop. This allows for detection at ppm-level concentrations of low molecular weight volatiles. More importantly, the generic resonant transducers can be individually coated with different polymers to allow for selective detection of volatile compounds. Here, we present the first results demonstrating the obtained selectivity by varying the coating chemistry on identical resonators. Subject Mechatronics, Mechanics & MaterialsHOL - HolstTS - Technical SciencesHigh Tech Systems & MaterialsElectronicsIndustrial InnovationElectronic noseMicroelectromechanical systems (MEMS)Volatile detection To reference this document use: http://resolver.tudelft.nl/uuid:9761a2c2-b0c6-470b-a1e8-c780038abf52 TNO identifier 466699 Publisher IEEE Source IEEE Sensors Journal, 12 (11), 3184-3188 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.