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Title: Chiral liquid crystal colloids

Journal Article · · Nature Materials
DOI:https://doi.org/10.1038/nmat5032· OSTI ID:1594991
ORCiD logo [1];  [1];  [1];  [2]; ORCiD logo [3]
  1. Univ. of Colorado, Boulder, CO (United States)
  2. Max-Planck-Inst. für Intelligente Systeme, Stuttgart (Germany); Univ. Stuttgart, Stuttgart (Germany). Inst. für Theoretische Physik; Univ. de Lisboa, Lisboa (Portugal). Centro de Física Teórica e Computacional, Dept. de Física, Faculdade de Ciências
  3. Univ. of Colorado, Boulder, CO (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)

Colloidal particles disturb the alignment of rod-like molecules of liquid crystals, giving rise to long-range interactions that minimize the free energy of distorted regions. Particle shape and topology are known to guide this self-assembly process. However, how chirality of colloidal inclusions affects these long-range interactions is unclear. Here we study the effects of distortions caused by chiral springs and helices on the colloidal self-organization in a nematic liquid crystal using laser tweezers, particle tracking and optical imaging. We show that chirality of colloidal particles interacts with the nematic elasticity to predefine chiral or racemic colloidal superstructures in nematic colloids. These findings are consistent with numerical modelling based on the minimization of Landau–de Gennes free energy. In conclusion, our study uncovers the role of chirality in defining the mesoscopic order of liquid crystal colloids, suggesting that this feature may be a potential tool to modulate the global orientated self-organization of these systems.

Research Organization:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0010305
OSTI ID:
1594991
Journal Information:
Nature Materials, Vol. 17, Issue 1; ISSN 1476-1122
Publisher:
Springer Nature - Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

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Cited By (19)

Chirality-Based Biosensors journal November 2018
Nature‐Inspired Emerging Chiral Liquid Crystal Nanostructures: From Molecular Self‐Assembly to DNA Mesophase and Nanocolloids journal August 2018
Supramolecular Chiral Nanoarchitectonics journal March 2020
Colloidal interactions and unusual crystallization versus de-mixing of elastic multipoles formed by gold mesoflowers journal January 2020
Geometric stabilisation of topological defects on micro-helices and grooved rods in nematic liquid crystals journal January 2018
Multifunctional chiral nematic cellulose nanocrystals/glycerol structural colored nanocomposites for intelligent responsive films, photonic inks and iridescent coatings journal January 2018
Graphene-based chiral liquid crystal materials for optical applications journal January 2019
Optically active and photoswitchable Tröger's base analogs journal January 2019
Defect-mediated colloidal interactions in a nematic-phase discotic solvent journal January 2019
Morphological analysis of chiral rod clusters from a coarse-grained single-site chiral potential journal January 2019
Soft matter from liquid crystals journal January 2019
Brownian Dynamics of Particles “Dressed” by Chiral Director Configurations in Lyotropic Chromonic Liquid Crystals journal October 2018
Curvature-Induced Twist in Homeotropic Nematic Tori journal December 2018
Interactions, topology and photonic properties of liquid crystal colloids and dispersions journal March 2019
Colloidal plasmonic DNA-origami with photo-switchable chirality in liquid crystals journal January 2019
Morphological analysis of chiral rod clusters from a coarse-grained single-site chiral potential. text January 2019
Colloidal interactions and unusual crystallization versus de-mixing of elastic multipoles formed by gold mesoflowers text January 2020
Additive-Free MXene Liquid Crystals and Fibers journal February 2020
Liquid Crystal Enabled Dynamic Nanodevices journal October 2018

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