Prolate and oblate chiral liquid crystal spheroids

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10.1126:sciadv.aba6728.pdf

Date

2020-07-01

Author

Sadati, Monirosadat
Martinez-Gonzalez, Jose A.
Zhou, Ye
Qazvini, Nader Taheri
Kurtenbach, Khia
Li, Xiao
Büküşoğlu, Emre
Zhang, Rui
Abbott, Nicholas L.
Pablo Hernandez-Ortiz, Juan
de Pablo, Juan J.

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Liquid crystals are known to exhibit intriguing textures and color patterns, with applications in display and optical technologies. This work focuses on chiral materials and examines the palette of morphologies that arises when microdroplets are deformed into nonspherical shapes in a controllable manner. Specifically, geometrical confinement and mechanical strain are used to manipulate orientational order, phase transitions, and topological defects that arise in chiral liquid crystal droplets. Inspired by processes encountered in nature, where insects and animals often rely on strain and temperature to alter the optical appearance of dispersed liquid crystalline elements, chiral droplets are dispersed in polymer films and deformation induced by uniaxial or biaxial stretching. Our measurements are interpreted by resorting to simulations of the corresponding systems, thereby providing an in-depth understanding of the morphologies that arise in these materials. The reported structures and assemblies offer potential for applications in smart coatings, smart fabrics, and wearable sensors.

Subject Keywords

BLUE-PHASE, COLOR CHANGES, TRANSITIONS, DROPLETS

URI

https://hdl.handle.net/11511/48050

Journal

SCIENCE ADVANCES

DOI

https://doi.org/10.1126/sciadv.aba6728

Collections

Department of Chemical Engineering, Article

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Citation Formats

M. Sadati et al., “Prolate and oblate chiral liquid crystal spheroids,” SCIENCE ADVANCES, pp. 0–0, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48050.