Terahertz Absorption of Nematic Liquid Crystals

Terahertz Absorption of Nematic Liquid Crystals

We present the first systematic study of cyanobiphenyls (CBs) and the phenylcyclohexanes in the range between 50 cm -1 (1.5 THz) and 500 cm -1 (15 THz). The impact of the alkyl chain length and of variations in the core structure on the spectrum is investigated using liquid crystals from the cyanobi...

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Veröffentlicht in:Journal of infrared, millimeter and terahertz waves millimeter and terahertz waves, 2014-05, Vol.35 (5), p.478-485
Hauptverfasser: Vieweg, Nico, Celik, Mehmet Ali, Zakel, Sabine, Gupta, Vineet, Frenking, Gernot, Koch, Martin
Format: Artikel
Sprache:eng
Schlagworte:
Chains
Classical Electrodynamics
Crystal structure
Density functional theory
Dynamics
Electrical Engineering
Electronics and Microelectronics
Engineering
Frequency ranges
Infrared
Instrumentation
Liquid crystals
Mathematical analysis
Nematic
Nematic crystals
Terahertz frequencies
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Beschreibung
Zusammenfassung:We present the first systematic study of cyanobiphenyls (CBs) and the phenylcyclohexanes in the range between 50 cm -1 (1.5 THz) and 500 cm -1 (15 THz). The impact of the alkyl chain length and of variations in the core structure on the spectrum is investigated using liquid crystals from the cyanobiphenyl and phenylcyclohexane families. Our measurements are supported by calculations based on density functional theory. This enables us to shine light on the vibrational dynamics of liquid crystal molecules in the terahertz frequency range.
ISSN:1866-6892
1866-6906
DOI:10.1007/s10762-014-0062-3