Microstructure Formation of Functional Polymers by Evaporative Self-Assembly under Flexible Geometric Confinement

Li, Xiangmeng; Zhu, Xijing; Wei, Huifen

doi:10.3390/mi9030124

Cited by 4 publications

(5 citation statements)

References 34 publications

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“…In line with efforts to enhance bioparticles' mechanical and thermal properties via nanocomposites [57][58][59][60][61] and microstructure formation in materials, [62][63][64] we present a strategy to fabricating bioinspired hybrid particulate structures using colloidal forces. By utilizing colloidal forces, we fabricate hybrid particulate structures that can be tailored to exhibit specific mechanical and thermal properties.…”

Section: Discussionmentioning

confidence: 99%

Particle Network Self‐Assembly of Similar Size Sub‐Micron Calcium Alginate and Polystyrene Particles Atop Glass

Onuh

Bar‐On

Manor

2023

Macromolecular Bioscience

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Particle‐mediated self‐assembly, such as nanocomposites, microstructure formation in materials, and core‐shell coating of biological particles, offers precise control over the properties of biological materials for applications in drug delivery, tissue engineering, and biosensing. We study the assembly of similar‐sized calcium alginate (CAG) and polystyrene sub‐micron particles in an aqueous sodium nitrate solution as a model for particle‐mediated self‐assembly of biological and synthetic mixed particle species. The objective is to reinforce biological matrixes by incorporating synthetic particles to form hybrid particulate networks with tailored properties. By varying the ionic strength of the suspension, we alter the energy barriers for particle attachment to each other and to a glass substrate that results from colloidal surface forces. The particles do not show monotonic adsorption trend to glass with ionic strength. Hence, apart from DLVO theory—van der Waals and electrostatic interactions—we further consider solvation and bridging interactions in our analysis of the particulate adsorption‐coagulation system. CAG particles, which support lower energy barriers to attachment relative to their counterpart polystyrene particles, accumulate as dense aggregates on the glass substrate. Polystyrene particles adsorb simultaneously as detached particles. At high electrolyte concentrations, where electrostatic repulsion is largely screened, the mixture of particles covers most of the glass substrate; the CAG particles form a continuous network throughout the glass substrate with pockets of polystyrene particles. The particulate structure is correlated with the adjustable energy barriers for particle attachment in the suspension.This article is protected by copyright. All rights reserved

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Section: Discussionmentioning

confidence: 99%

Particle Network Self‐Assembly of Similar Size Sub‐Micron Calcium Alginate and Polystyrene Particles Atop Glass

Onuh

Bar‐On

Manor

2023

Macromolecular Bioscience

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“…Many methods for obtaining structured deposits based on self-assembly of micro-and nanoparticles as a result of evaporation were proposed (e.g., [95,90,91,96,97,98,99,100,101,102,103,104] and many others). The studies in this direction are known as "Evaporative-induced self-assembly" (EISA).…”

Section: Introductionmentioning

confidence: 99%

“…It can be a flat one [96,108,99,104]. Sometimes plate is characterized by varying curvature due to swelling [98]. In another cases, its geometry is a spherical segment [100,109], semicylinder form [110], ad hoc geometrical shape [97], or a template with groove/ridge surface topography [103].…”

Section: Introductionmentioning

confidence: 99%

Applying Droplets and Films in Evaporative Lithography

Kolegov,

Barash

2020

Preprint

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The review covers experimental results of evaporative lithography and analyzes existing mathematical models of this method. Evaporating droplets and films are applied in different fields, such as cooling of heated surfaces of electronic devices, diagnostics in health care, creation of transparent conductive coatings on flexible substrates, surface patterning. A method called evaporative lithography emerged after establishing the connection between the coffee ring effect taking place in drying colloidal droplets, and naturally occuring inhomogeneous vapor flow densities from fluid-vapor interfaces. Essential control of the colloidal particle deposit patterns is achieved in this method by producing ambient conditions that induce a nonuniform evaporation profile from the colloidal liquid surface. Evaporative lithography is part of a wider field, which is known as "Evaporative-induced self-assembly" (EISA). EISA involves methods based on the contact line processes, methods employing particle interaction effects and evaporative lithography. As a rule, evaporative lithography is a flexible and single-stage process with such advantages as simplicity, low price and possibility of application to almost any substrate without pretreatment. Since no mechanical impact on a template is present in evaporative lithography, the template integrity is preserved in the process. The method is also useful for creating materials with localized functions, such as slipperiness and self-healing. For these reasons, evaporative lithography attracts increasing attention and has a number of noticeable achievements at present. We also analyze limitations of the approach and ways of its further development.

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“…This special issue gives insights into diverse spectrum of peculiar tailor-made self-assembled polymer structures and hybrid materials that have been designed through modern powerful techniques and approaches such as the micellization [1], hydrogel formation [2,3], self-assembly at the air-liquid interface [4], the layer-by-layer deposition and the hard templating [5,6], solvent evaporation [7,8], photo-induced [9] and enzyme-mediated cross-linking [10].…”

mentioning

confidence: 99%

“…Herein, microfluidics-assisted assembly of porous calcium carbonate templates and their covering with polymer coatings opened new avenues for the fabrication of tailor-made biocompatible scaffolds for advanced tissue engineering and 3D cell culture as reviewed in [3]. Surface patterning with the polymers [8] and crystalline colloidal monolayers [4] also have been demonstrated.…”

mentioning

confidence: 99%