Bent-core smectic liquid crystal (LC) phases (B phases) have been widely studied since their unusual polar and chiral properties were discovered in the 1990s. Relatively few studies have examined the mechanisms by which the orientation of the B phase may be controlled to produce the type of macroscopic domain that is essential for organic semiconductor, optical device and patterning applications. This review is intended to cover recent progress towards controlling the B phases upon layering, including anisotropic treatment methods and topographical confinement methods. Finally, this review closes with a discussion of B smectic phases that have been fabricated for use in certain applications.
Bibliographical noteFunding Information:
This was supported by the National Research Foundation (NRF) Grant funded by the Korean Government (MSIP & MOE) (2012R1A1A1002486 and R31-10071), and the MRSEC Program funded by NSF DMR-0820579.
- bent-core molecules
- external fields
- liquid crystal phases
- orientation control
- topographic confinement