Structure analysis of layer-by-layer multilayer films of colloidal particles

Batys, Piotr; Nosek, Magdalena; Weroński, Paweł

doi:10.1016/j.apsusc.2015.01.171

Cited by 10 publications

(5 citation statements)

References 55 publications

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“…An outstanding matter with an eye toward 3D metamaterials is how disclinations couple when colloidal slabs are stacked. Practicable systems could extend layer-by-layer protocols [7,89,90,[168][169][170][171][172][173][174][175][176][177][178][179][180], thus expanding the gamut of metamaterials attainable by conventional 3D-based methods. Studies on the switching mechanics by applying external fields (as opposed to thermal tempering) would be of interest in the production of devices and associated technologies.…”

Section: Resultsmentioning

confidence: 99%

“…When coupling the elastic forces of topological defects in LC media, colloidal ordering induced via a substrate can differ significantly from that observed via topological mediation in the bulk [21,24,25,35,36]. Slab assembly becomes relevant in 3D colloidal arrangements because it yields intermediates: metamaterials are finalized upon "stacking" slabs in layer-by-layer synthesis to achieve a target 3D structure [89][90][91].…”

Section: Introductionmentioning

confidence: 99%

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A Bidimensional Gay-Berne Calamitic Fluid: Structure and Phase Behavior in Bulk and Strongly Confined Systems

et al. 2021

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A bidimensional (2D) thermotropic liquid crystal (LC) is investigated with Molecular Dynamics (MD) simulations. The Gay-Berne mesogen with parameterization GB(3, 5, 2, 1) is used to model a calamitic system. Spatial orientation of the LC samples is probed with the nematic order parameter: a sharp isotropic-smectic (I-Sm) transition is observed at lower pressures. At higher pressures, the I-Sm transition involves an intermediate nematic phase. Topology of the orthobaric phase diagram for the 2D case differs from the 3D case in two important respects: 1) the nematic region appears at lower temperatures and slightly lower densities, and 2) the critical point occurs at lower temperature and slightly higher density. The 2D calamitic model is used to probe the structural behavior of LC samples under strong confinement when either planar or homeotropic anchoring prevails. Samples subjected to circular, square, and triangular boundaries are gradually cooled to study how orientational order emerges. Depending on anchoring mode and confining geometry, characteristic topological defects emerge. Textures in these systems are similar to those observed in experiments and simulations of lyotropic LCs.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Bidimensional Gay-Berne Calamitic Fluid: Structure and Phase Behavior in Bulk and Strongly Confined Systems

et al. 2021

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“…The latter one can be used for detection of planar substrates by relative values obtained through direct force measurement [158]. Specifically, amidine particles were applied to exhibit the charge reversal for particles [159]. As it was proved, charges of non-coated particle are reversed by adsorbed polymers to show opposite charges.…”

Section: Charge Balance Of Lbl Multilayers 431 Charge Reversalmentioning

confidence: 99%

Layer-by-Layer Cell Encapsulation for Drug Delivery: The History, Technique Basis, and Applications

Lei

Feng

et al. 2022

Pharmaceutics

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The encapsulation of cells with various polyelectrolytes through layer-by-layer (LbL) has become a popular strategy in cellular function engineering. The technique sprang up in 1990s and obtained tremendous advances in multi-functionalized encapsulation of cells in recent years. This review comprehensively summarized the basis and applications in drug delivery by means of LbL cell encapsulation. To begin with, the concept and brief history of LbL and LbL cell encapsulation were introduced. Next, diverse types of materials, including naturally extracted and chemically synthesized, were exhibited, followed by a complicated basis of LbL assembly, such as interactions within multilayers, charge distribution, and films morphology. Furthermore, the review focused on the protective effects against adverse factors, and bioactive payloads incorporation could be realized via LbL cell encapsulation. Additionally, the payload delivery from cell encapsulation system could be adjusted by environment, redox, biological processes, and functional linkers to release payloads in controlled manners. In short, drug delivery via LbL cell encapsulation, which takes advantage of both cell grafts and drug activities, will be of great importance in basic research of cell science and biotherapy for various diseases.

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“…The pair correlation function can be calculated directly from this dataset. [68][69][70] However, more complex analyses can provide further insight into local order variation throughout the sample. The simplest of these is Voronoi-Delaunay analysis, where the Voronoi cell of each particle is determined.…”

Section: Quantifying Disorder In 2d Colloidal Filmsmentioning

confidence: 99%

Controlling disorder in self-assembled colloidal monolayers via evaporative processes

Roach

Hereu

Lalanne³

et al. 2022

Nanoscale

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Structure analysis of layer-by-layer multilayer films of colloidal particles

Cited by 10 publications

References 55 publications

A Bidimensional Gay-Berne Calamitic Fluid: Structure and Phase Behavior in Bulk and Strongly Confined Systems

A Bidimensional Gay-Berne Calamitic Fluid: Structure and Phase Behavior in Bulk and Strongly Confined Systems

Layer-by-Layer Cell Encapsulation for Drug Delivery: The History, Technique Basis, and Applications

Controlling disorder in self-assembled colloidal monolayers via evaporative processes

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