Abstract
Photoacoustic spectroscopy (PAS) has been used for thermal characterization of diverse materials. The use of PAS has become an important tool since it is a nondestructive technique. Furthermore, its use to measure also optical absorption spectra has advantages over the usual transmission measurements due to important features such as the fact that scattered light does not disturb the measurements significantly and also the sample does not need to be prepared to have good quality surfaces. By using a heat transmission configuration of the photoacoustic technique, the thermal properties of biological samples have been investigated. In the present study, the photoacoustic technique is applied to obtain the thermal diffusivity of hydroxyapatite (HA) [Ca10(PO4)6(OH)2]. Complementary studies of X-ray diffraction and energy dispersion spectroscopy (EDS) were performed.
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