Abstract
In order to test the validity of our recently reported theory of optical activity near absorption bands of cholesteric liquid crystals, we have measured the infrared linear dichroism (LD) of the nematic liquid crystal p-methoxy-p′-n-butylaxoxybenzene and the circular dichroism (CD) of the cholesteric phase of this liquid crystal obtained by doping with 0.75 mole-% cholesteryl-2-(2-ethoxyethoxy)ethyl carbonate. Using the measured LD data to define the optical properties of the individual layers of the cholesteric structure, we calculate the CD of the cholesteric material by means of our macroscopic theory. The calculated signs, amplitudes, positions, and shapes of the CD bands agree closely with observation. This demonstrates that the CD is quantitatively explained by introducing frequency-dependent complex terms into the spiralling dielectric tensor of the Oseen-de Vries model for cholesteric liquid crystals.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
