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SAW chemical sensing using poly-ynes and organometallic polymer films

TitleSAW chemical sensing using poly-ynes and organometallic polymer films
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2001
AuthorsPenza, Michele, Cassano Gennaro, Sergi A., C. Sterzo Lo, and Russo M.V
JournalSensors and Actuators, B: Chemical
Volume81
Pagination88-98
ISSN09254005
KeywordsAcoustic arrays, Acoustic surface wave devices, Atmospheric humidity, Chemical sensors, Hygrometers, Metallorganic polymers, Pattern Recognition, Plastic films, Polymer films, Polymeric membranes, Principal component analysis, Resonators, Sensitivity analysis, Surface acoustic waves (SAW)
Abstract

We have investigated chemical sensing properties of three polymeric films (organic and organometallic poly-ynes) by a surface acoustic wave (SAW) and surface transverse wave (STW) sensor, at room temperature. The sensor system, consisting of an acoustic two-port resonator operating at 433.92 and 380.8MHz, respectively, has been configured as a frequency oscillator, including an integrated electronic module. The polymeric membranes have been tested, at room temperature, toward gases (NO2, NO, NH3, CO, CH4, SO2, H2S in N2), relative humidity (RH), and vapours (ethanol, acetone, ethyl-acetate) by showing high sensitivity and low selectivity. A comparison of sensing performance of our SAW RH sensors with a commercial hygrometer has been realised. Principal component analysis (PCA) has been applied as pattern recognition technique achieving good separation for the examined vapours, at tested low concentrations. © 2001 Elsevier Science B.V. All rights reserved.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-0035892601&doi=10.1016%2fS0925-4005%2801%2900937-6&partnerID=40&md5=39596917ba4bad7e131e48dcb275427a
DOI10.1016/S0925-4005(01)00937-6
Citation KeyPenza200188