Fig. 4. (Color online) (a) Measured transmittance spectra of RH-CLC sample for various incident angles from air. The RH-CLC sample fabricated is composed of mixture of 4.3 wt% concentration of chiral dopant R1011 and host 6CHBT nematic liquid crystal. (b) Determined central Bragg wavelength against incident angle with a theoretical curve, in which the pitch is estimated as p=539.3 nm.
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