U.S. Department of Energy, USDOE
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funding vehicle for: Patterned surface anchoring of nematic droplets at miscible liquid-liquid interfaces

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Division of Materials Research, DMR
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funding vehicle for: Patterned surface anchoring of nematic droplets at miscible liquid-liquid interfaces

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RDF description of Patterned surface anchoring of nematic droplets at miscible liquid-liquid interfaces - http://orbis.uaslp.mx/vivo/individual/scopus5080
rights: termsOfUse
date: 2026-08-25T01:05:03
publisher: vivo
type: Document

Article
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Soft Matter
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publication venue for: Patterned surface anchoring of nematic droplets at miscible liquid-liquid interfaces
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type: Periodical
type: Information Content Entity
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Document
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National Science Foundation, NSF: 1508987, CBET 1508987
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type: BFO_0000020
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type: Thing
type: Grant
type: Continuant
funding vehicle for: Patterned surface anchoring of nematic droplets at miscible liquid-liquid interfaces

Information Content Entity
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Basic Energy Sciences, BES
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type: BFO_0000020
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type: Thing
type: Grant
type: Continuant
funding vehicle for: Patterned surface anchoring of nematic droplets at miscible liquid-liquid interfaces

Patterned surface anchoring of nematic droplets at miscible liquid-liquid interfaces
type: Continuant
related by: authorship_30748
related by: authorship_30746
type: Document
type: Article
has funding vehicle: National Science Foundation, NSF: 1508987, CBET 1508987
issue: 34
related by: authorship_30745
doi: 10.1039/c7sm00975e
pmid: 28752888
most specific type: Document
type: Generically Dependent Continuant
has funding vehicle: U.S. Department of Energy, USDOE
most specific type: Article
type: Information Content Entity
crisid: 5081
page start: 5714
has funding vehicle: Basic Energy Sciences, BES
e iscopus: 2-s2.0-85028770542
abstract: We report on the internal configurations of droplets of nematic liquid crystals (LCs; 10-50 μm-in-diameter; comprised of 4-cyano-4′-pentylbiphenyl and 4-(3-acryloyloxypropyloxy)benzoic acid 2-methyl-1,4-phenylene ester) sedimented from aqueous solutions of sodium dodecyl sulfate (SDS) onto interfaces formed with pure glycerol. We observed a family of internal LC droplet configurations and topological defects consistent with a remarkably abrupt transition from homeotropic (perpendicular) to tangential anchoring on the surface of the LC droplets in the interfacial environment. Calculations of the interdiffusion of water and glycerol at the aqueous-glycerol interface revealed the thickness of the diffuse interfacial region of the two miscible liquids to be small (0.2-0.5 μm) compared to the diameters of the LC droplets on the experimental time-scale (15-120 minutes), leading us to hypothesize that the patterned surface anchoring was induced by gradients in concentration of SDS and glycerol across the diameter of the LC droplets in the interfacial region. This hypothesis received additional support from experiments in which the time of sedimentation of the LC droplets onto the interface was systematically increased and the droplets were photo-polymerized to preserve their configurations: the configurations of the LC droplets were consistent with a time-dependent decrease in the fraction of the surface area of each droplet exhibiting homeotropic anchoring. Specifically, LC droplets with <10%25 surface area with tangential anchoring exhibited a bulk point defect within the LC droplet, whereas droplets with >10%25 surface area with tangential anchoring exhibited a boojum defect within the tangential region and a disclination loop separated the regions with tangential and homeotropic anchoring. The topological charge of these LC droplet configurations was found to be consistent with the geometrical theorems of Poincaré and Gauss and also well-described by computer simulatio…
volume: 13
related by: authorship_30744
origen: scopus
page end: 5723
related by: authorship_30743
related by: authorship_30741
has funding vehicle: Division of Materials Research, DMR
estado: published
related by: authorship_30749
related by: authorship_30747
accesstype: All Open Access, Green
date time value: article date 5081
type: Entity
related by: authorship_30750
has publication venue: Soft Matter
type: Thing
freetext keyword: Benzoic acid; Drops; Free energy; Glycerol; Liquid crystals; Liquids; Phase interfaces; Point defects; Sodium dodecyl sulfate; Sodium sulfate; Solutions; Surface defects; Topology; Compositional gradients; Geometrical theorems; Homeotropic anchoring; Landau-de Gennes free energy; Liquid-liquid interfaces; Optical characteristics; Topological charges; Transition pathway; Nematic liquid crystals
related by: authorship_30742
related by: authorship_30740