Comparative Performance of PLZT and PVDF Pyroelectric Sensors Used to the Thermal Characterization of Liquid Samples

Table 1

Thermal diffusivities of analyzed liquids.

Sample	PLZT		PVDF		The literature
	𝛼Amp(×10^−8m^2/s)	𝛼Phase(×10^−8m^2/s)	𝛼Amp(×10^−8m^2/s)	𝛼Phase(×10^−8m^2/s)	𝛼𝑆(×10^−8m^2/s)
Water	14.23±0.049	14.141±0.057	14.13±0.13	14.15±0.12	14.16 [13]
Glycerol	9.19±0.050	9.20±0.033	9.22±0.14	9.22±0.26	9.22 [3]
Ethylene glycol	9.36±0.062	9.36±0.030	9.17±0.28	9.18±0.11	9.18 [3]
Olive oil	8.91±0.043	8.76±0.025	8.76±0.053	8.90±0.071	8.81 [3]