We use few-cycle THz pulses to perform time-domain spectroscopy measurements of 8CB liquid crystal (LC). The measured absorption spectra for uniformly AC-aligned samples clearly indicate activity in the THz region: a set of strong bands above 4 THz followed by a broad plateau below are observed. DFT gas-phase calculations have been performed to assign the vibrational bands and to support the understanding of the observed features.
THz spectroscopy of thermotropic liquid crystals
Piccoli R.;
2023-01-01
Abstract
We use few-cycle THz pulses to perform time-domain spectroscopy measurements of 8CB liquid crystal (LC). The measured absorption spectra for uniformly AC-aligned samples clearly indicate activity in the THz region: a set of strong bands above 4 THz followed by a broad plateau below are observed. DFT gas-phase calculations have been performed to assign the vibrational bands and to support the understanding of the observed features.
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