C. Caliendo et al., A NEW SURFACE-ACOUSTIC-WAVE HUMIDITY SENSOR-BASED ON A POLYETHYNYLFLUORENOL MEMBRANE, Sensors and actuators. B, Chemical, 18(1-3), 1994, pp. 82-84
A device for surface acoustic wave (SAW) measurements, based on a poly
meric sensitive membrane, that is polyethynylfluorenol (PEFl), has bee
n realized. The SAW/PEFl sensor shows relatively fast and highly sensi
tive responses in the range of relative humidity 0-60%. The enhanced s
ensitivity of the SAW/PEFl device, in comparison with that of a SAW se
nsor which utilized a polyphenylacetylene film, may be attributed to t
he presence of OH groups belonging to the polymer repeat unit.