Simulation of THz pulse propagation through ceramic materials based on hydroxyapatite
Anastasia E. Rezvanova 1, Boris S. Kudryashov 1, Daniil D. Skorobogatov 1,2, Alexander N. Ponomarev 1,2; 1 Institute of Strength Physics and Materials Science SB RAS, Tomsk, Russia; 2 Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Abstract
THz spectroscopy can be used for fast, non-destructive and non-contact testing of optically transparent materials. Using computer simulation methods, models of ceramic samples based on hydroxyapatite with small additions of multilayer carbon nanotubes with different numbers of pores were constructed, and a model of THz pulse propagation through the sample was obtained and analyzed. It is shown that the optical parameters correlate with the porosity of the material. The decrease in the accuracy of the computer model relative to the real sample is associated with an increase in the scattering of THz radiation inside the sample: the more pores, the higher the probability of reflection / refraction of the beam. Considering this fact, the time of beam passage through the sample increases. The results of the study show that the structure and optical properties of the composite can be controlled by changing the concentration of MWCNT additives.
The work was performed according to the Government research assignment for ISPMS SB RAS, subject number FWRW-2022-0002.
Speaker
Kudryashov Boris Sergeevich
ISPMS SB RAS
Russia
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