Experimental and theoretical research on the vibration and spectral characteristics of alumina in various states

Wang Sun; He Cai; Liangsheng Li; Hongcheng Yin

doi:10.1117/12.3005852

10 October 2023 Experimental and theoretical research on the vibration and spectral characteristics of alumina in various states

Wang Sun, He Cai, Liangsheng Li, Hongcheng Yin

Author Affiliations +

Proceedings Volume 12799, Third International Conference on Advanced Algorithms and Signal Image Processing (AASIP 2023); 1279951 (2023) https://doi.org/10.1117/12.3005852
Event: 3rd International Conference on Advanced Algorithms and Signal Image Processing (AASIP 2023), 2023, Kuala Lumpur, Malaysia

Abstract

Based on first principles combined with molecular dynamics, calculate the vibration characteristics of α- Al2O3 with temperature variation(0-1100K). By extracting the fingerprint features of α- Al2O3, its high-temperature reflectance was obtained. The results were in good agreement with experimental results, verifying the accuracy of the theoretical algorithm. The reflectivity of α- Al2O3 powder tablets and stacked powders were measured using two measurement methods, Fourier time-domain spectrometer reflectance and ATR, respectively. The results showed that the material fingerprint feature recognition analysis method based on first principles calculation was accurate and effective, and could be used for predicting the spectral characteristics of different particle size powders and their tablets in the terahertz band, as well as spectral identification of small amounts of impurity doping.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Wang Sun, He Cai, Liangsheng Li, and Hongcheng Yin "Experimental and theoretical research on the vibration and spectral characteristics of alumina in various states", Proc. SPIE 12799, Third International Conference on Advanced Algorithms and Signal Image Processing (AASIP 2023), 1279951 (10 October 2023); https://doi.org/10.1117/12.3005852

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