http://www.cnr.it/ontology/cnr/individuo/prodotto/ID212537
Sensitivity of a platinum-polyyne-based sensor to low relative humidity and chemical vapors (Articolo in rivista)
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- Sensitivity of a platinum-polyyne-based sensor to low relative humidity and chemical vapors (Articolo in rivista) (literal)
- Anno
- 2002-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.1489095 (literal)
- Alternative label
Cinzia Caliendo, Ilaria Fratoddi, Maria Vittoria Russo (2002)
Sensitivity of a platinum-polyyne-based sensor to low relative humidity and chemical vapors
in Applied physics letters; American Institute Of Physics (AIP), Melville (Stati Uniti d'America)
(literal)
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- Cinzia Caliendo, Ilaria Fratoddi, Maria Vittoria Russo (literal)
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- in the present paper the behavior of a Surface Acoustiv Wave sensor is described. A SAW delay line has been implemented on Si substrate covered by a SiO2 and ZnO films grown by reactive sputtering technique; the acoustic path was covered by spinning technique with a humidity sensitive membrane. the SAW phase velocity and propagation loss changes were measured for different humidity values and the sensor calibration curve was deduced.
The real and imaginary parts of the complex shear modulus G* of the thin membrane were experimentally estimated from acoustic measurements of insertion loss and velocity developed at 0% RH on different polymer coated substrates (such as lithium niobate and quartz). (literal)
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- Istituto di Acustica O.M.Corbino
Facoltà di Chimica, Dip. Chimica La Sapienza
Facoltà di Chimica, Dip. Chimica La Sapienza (literal)
- Titolo
- Sensitivity of a platinum-polyyne-based sensor to low relative humidity and chemical vapors (literal)
- Abstract
- The sensitivity to relative humidity ~RH! variations in the range 0%-90% of a platinum polyyne,
namely poly-@1,4-dihexadecyloxy-2,5-diethynylbenzene-bis~triphenylphosphine! platinum~II!#
~Pt-P-HDOB! membrane was investigated by means of a surface acoustic wave ~SAW! based
sensor. A thin film of polymeric membrane was spin deposited on the free surface of the device and
the resulting acoustic velocity and attenuation perturbations allowed the acoustic characterization of
the membrane by means of the perturbation theory. The SAW sensor was able to reveal even very
low ~,10% RH! humidity conditions at room temperature, with high reproducibility, repeatability
and stability. (literal)
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