Published: Aug. 31, 2015
Main image from Hough et al 2015 PRL
Second main image from Hough et al 2015 PRL

L. E. Hough and N. A. Clark (2005). Phys. Rev. Lett95, 107802 DOI: https://doi.org/10.1103/PhysRevLett.95.107802

We present a model for the optical chirality of layered liquid-crystalline phases. The model demonstrates that uniform stacking of chiral layers can lead to significant collective optical rotation, even in the absence of a superlayer helix. We predict the optical rotation of the B2 phases of bent-core liquid crystals, which can have optical rotation as large as 1000 times the molecular optical activity.