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Chin. Phys. B, 2009, Vol. 18(3): 1085-1088    DOI: 10.1088/1674-1056/18/3/041
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Simulation study on terahertz vibrational absorption in liquid crystal compounds

Ma Heng(马恒)a), Shi De-Heng(施德恒)b), He Jun(赫君)a), and Peng Yu-Feng(彭玉峰)a)
a Department of Physics, Henan Normal University, Xinxiang 453007, China; b Department of Physics, Xinyang Normal University, Xinyang 464000, China
Abstract  The terahertz (THz) spectrum absorptions of nematic liquid crystal (LC) material, i.e. N-(p-methoxybenzylidene)-p-butylaniline (MBBA), and its relevant compounds are simulated in this paper by using the density functional theory (DFT) method. A strong absorptive frequency is located at 3.65 THz for the MBBA, which is in agreement with experimental data found in the literature. The result suggests that the DFT method is effective for dealing with the anisotropic nematic LC compounds.
Keywords:  terahertz spectroscopy      N-(p-methoxybenzylidene)-p-butylaniline (MBBA)      liquid crystal      density functional theory  
Received:  09 May 2008      Revised:  26 September 2008      Accepted manuscript online: 
PACS:  78.70.Gq (Microwave and radio-frequency interactions)  
  63.50.-x (Vibrational states in disordered systems)  
  61.30.Cz (Molecular and microscopic models and theories of liquid crystal structure)  

Cite this article: 

Ma Heng(马恒), Shi De-Heng(施德恒), He Jun(赫君), and Peng Yu-Feng(彭玉峰) Simulation study on terahertz vibrational absorption in liquid crystal compounds 2009 Chin. Phys. B 18 1085

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