University of Minnesota
School of Physics & Astronomy

Publications

Discovery of a novel smectic-C* liquid crystal phase with six-layer periodicity

                                                       

Discovery of a novel smectic-C* liquid crystal phase with six-layer periodicity.” by Shun Wang, LiDong Pan, R. Pindak, Z.Q. Liu, H. T. Nguyen, and C. C. Huang, Phys. Rev. Lett. 104, 027801 (2010).

We report the discovery of a new SmC_{d6 } liquid crystal phase with six-layer periodicity by resonant x-ray diffraction. Upon cooling, the new phase appears between the SmC_{\alpha } phase having a helical structure and the SmCd4 phase with four-layer periodicity. This SmC_{d6} phase was identified in two mixtures which have an unusual reversed SmCd4-SmC phase sequence. The SmC_{d6 } phase shows a distorted clock structure. The existence of phases having liquid-like in-plane ordering with a "long-range" lock-in periodicity (now being extended to six layers) is one of the long-lasting questions in condensed matter. Major efforts are required to address the physical origin of long-range interactions and novel physical properties of the SmC_{d6 } phase.

More information at http://meetings.aps.org/Meeting/MAR10/Event/116984