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Title: Directed Self-Assembly of Liquid Crystalline Blue-Phases into Ideal Single-Crystals

Abstract

Chiral nematic liquid crystals are known to form blue phases—liquid states of matter that exhibit ordered cubic arrangements of topological defects. Blue-phase specimens, however, are generally polycrystalline, consisting of randomly oriented domains that limit their performance in applications. A strategy that relies on nano-patterned substrates is presented here for preparation of stable, macroscopic single-crystal blue-phase materials. Different template designs are conceived to exert control over different planes of the blue-phase lattice orientation with respect to the underlying substrate. Experiments are then used to demonstrate that it is indeed possible to create stable single-crystal blue-phase domains with the desired orientation over large regions. Lastly, these results provide a potential avenue to fully exploit the electro-optical properties of blue phases, which have been hindered by the existence of grain boundaries.

Authors:
 [1];  [2];  [2];  [2];  [2];  [1];  [1]
  1. Univ. of Chicago, IL (United States). Inst. for Molecular Engineering; Argonne National Lab. (ANL), Argonne, IL (United States). Material Science Division
  2. Univ. of Chicago, IL (United States). Inst. for Molecular Engineering
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); University of Chicago, Chicago, IL (United States). Materials Research Science & Engineering Center (MRSEC); National Science Foundation (NSF)
OSTI Identifier:
1372057
Grant/Contract Number:
AC02-06CH11357; DMR-1420709
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Martinez-Gonzalez, Jose A., Li, Xiao, Sadati, Monirosadat, Zhou, Ye, Zhang, Rui, Nealey, Paul F., and de Pablo, Juan J. Directed Self-Assembly of Liquid Crystalline Blue-Phases into Ideal Single-Crystals. United States: N. p., 2017. Web. doi:10.1038/ncomms15854.
Martinez-Gonzalez, Jose A., Li, Xiao, Sadati, Monirosadat, Zhou, Ye, Zhang, Rui, Nealey, Paul F., & de Pablo, Juan J. Directed Self-Assembly of Liquid Crystalline Blue-Phases into Ideal Single-Crystals. United States. doi:10.1038/ncomms15854.
Martinez-Gonzalez, Jose A., Li, Xiao, Sadati, Monirosadat, Zhou, Ye, Zhang, Rui, Nealey, Paul F., and de Pablo, Juan J. Fri . "Directed Self-Assembly of Liquid Crystalline Blue-Phases into Ideal Single-Crystals". United States. doi:10.1038/ncomms15854. https://www.osti.gov/servlets/purl/1372057.
@article{osti_1372057,
title = {Directed Self-Assembly of Liquid Crystalline Blue-Phases into Ideal Single-Crystals},
author = {Martinez-Gonzalez, Jose A. and Li, Xiao and Sadati, Monirosadat and Zhou, Ye and Zhang, Rui and Nealey, Paul F. and de Pablo, Juan J.},
abstractNote = {Chiral nematic liquid crystals are known to form blue phases—liquid states of matter that exhibit ordered cubic arrangements of topological defects. Blue-phase specimens, however, are generally polycrystalline, consisting of randomly oriented domains that limit their performance in applications. A strategy that relies on nano-patterned substrates is presented here for preparation of stable, macroscopic single-crystal blue-phase materials. Different template designs are conceived to exert control over different planes of the blue-phase lattice orientation with respect to the underlying substrate. Experiments are then used to demonstrate that it is indeed possible to create stable single-crystal blue-phase domains with the desired orientation over large regions. Lastly, these results provide a potential avenue to fully exploit the electro-optical properties of blue phases, which have been hindered by the existence of grain boundaries.},
doi = {10.1038/ncomms15854},
journal = {Nature Communications},
number = ,
volume = 8,
place = {United States},
year = {Fri Jun 16 00:00:00 EDT 2017},
month = {Fri Jun 16 00:00:00 EDT 2017}
}

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