9 February 2007 Effect of permanent dipole moments perpendicular to the molecular long axis on the terahertz absorption in liquid crystals
Author Affiliations +
Abstract
We have measured the terahertz (THz) absorption spectra of MBBA (4-Methoxybenzylidene-4'-n-butylaniline) and its homologues by using THz time-domain and polarized fourier transform far-infrared (FT-IR) spectroscopy, and observed the absorption peak due to the permanent dipole moments perpendicular to the molecular long axis. In addition, we also measured the THz absorption spectra of CCN47 (4'-trans-butyl-4-cyano-4-trans-heptyl-1,1'-bicyclohexane) which has a large permanent moment perpendicular to the long axis, by using polarized far-infrared FT-IR spectroscopy. The relation between the vibration modes and the absorption in the THz region is discussed.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Tanaka, S. Tanaka, Y. Okada, Y. Okada, K. Yamamoto, K. Yamamoto, Y. Takanishi, Y. Takanishi, M. Tani, M. Tani, K. Ishikawa, K. Ishikawa, M. Hangyo, M. Hangyo, H. Takezoe, H. Takezoe, } "Effect of permanent dipole moments perpendicular to the molecular long axis on the terahertz absorption in liquid crystals", Proc. SPIE 6487, Emerging Liquid Crystal Technologies II, 648708 (9 February 2007); doi: 10.1117/12.709109; https://doi.org/10.1117/12.709109
PROCEEDINGS
7 PAGES


SHARE
Back to Top