Journal
PHYSICAL REVIEW LETTERS
Volume 113, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.237801
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Funding
- NSF [DMR-1106014, DMR-1409658]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1409658, 1106014] Funding Source: National Science Foundation
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In liquid crystals, if flexoelectric couplings between polar order and director gradients are strong enough, the uniform nematic phase can become unstable to the formation of a modulated polar phase. Previous theories have predicted two types of modulation: twist bend and splay bend; the twist-bend phase has been found in recent experiments. Here, we investigate other types of modulation, using lattice simulations and Landau theory. In addition to twist bend and splay bend, we also find polar blue phases, with 2D or 3D modulations of both the director and the polar order. We compare polar blue phases with chiral blue phases, and discuss opportunities for observing them experimentally.
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