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Proceedings Paper

Optical property and spectroscopy studies on β-ZnS nanoparticles in the terahertz range
Author(s): Yu-Ping Yang; Xiu-min Wang; Bin Zou; Shuai Feng; Xiao Chen; Wen-zhong Wang
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Paper Abstract

A simple wet-chemical route has been employed to synthesize β-ZnS nanoparticles with diameter of ca.15-20 nm. The far-infrared characteristics of β-ZnS nanoparticles are investigated by terahertz time-domain spectroscopy (THz-TDS) over the frequency range from 0.3 to 2.5 THz. The observed results show two obvious absorption features at 1.44 and 1.72 THz, which give rise to different vibration modes compared to the bulk ZnS. The theoretical calculation has been carried out for better understanding the vibration behaviors by using of density functional theory (DFT) with GAUSSIAN 03 software package. The simulated absorption spectrum was consistent with the experimental data. The results reveal that the two absorption features are mainly ascribed to different vibration modes caused by the surface atoms.

Paper Details

Date Published: 5 August 2009
PDF: 7 pages
Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 73850Q (5 August 2009); doi: 10.1117/12.834691
Show Author Affiliations
Yu-Ping Yang, Minzu Univ. of China (China)
Xiu-min Wang, Beijing Univ. of Civil Engineering and Architecture (China)
Bin Zou, Minzu Univ. of China (China)
Shuai Feng, Minzu Univ. of China (China)
Xiao Chen, Minzu Univ. of China (China)
Wen-zhong Wang, Minzu Univ. of China (China)


Published in SPIE Proceedings Vol. 7385:
International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications
X.-C. Zhang; James M. Ryan; Cun-lin Zhang; Chuan-xiang Tang, Editor(s)

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