Thin films of poly-vanadium-molybdenum acid as starting materials for humidity sensors

Electrical and humidity sensing properties of carbon nanotubes-SiO2-poly(2-acrylamido-2-methylpropane sulfonate) composite material

“…At low RH, the frequency influenced more significantly on the impedance than in the case of high RH. Because at a very high frequency, the adsorbed water cannot be polarized (at RH < 50%), the dielectric phenomena does not appear [32].…”

Investigating sensing properties of poly-(dioctylfluorene) based planar sensor

“…Low sensitivity of the sensor at 1 k Hz may be ascribed to the fact that polarization of adsorbed water cannot change rapidly with changing direction of electric field, which results in a slight increase in the dielectric constant. This shows little dependence of capacitance on % RH at higher frequencies [34,35].…”

Conductance versus Humidity of Vanadium–Metal–Oxygen Layers Deposited from Gels

“…This suggests that the part of total impedance that describes the layer properties was measured in a high frequency range and the contact properties correspond to the low frequency range of the Cole-Cole plots (see, e.g. [7,8]). The Cole-Cole plots for H 2 V 11 MoO 31.2 Á nH 2 O are similar.…”