Interplay between adsorption, aggregation and diffusion in confined core-softened colloids

Marques, Murilo Sodré; Bordin, José Rafael

doi:10.1016/j.jciso.2021.100029

Cited by 5 publications

(4 citation statements)

References 80 publications

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“…Additionally, structure of colloidal systems has been extensively studied by molecular dynamics and Monte Carlo simulations and the presence of patterns have been found for 3D bulk [42], 2D bulk [60][61][62] and confined systems [52,[63][64][65][66][67][68][69][70][71]. Significant differences are reported when going from a 2D to a quasi-2D system.…”

Section: Of 12mentioning

confidence: 99%

“…But where is the boundary between the 3D behavior, with one region of structural anomaly in the fluid phase associated to a crystalline-amorphous solid transition [75,86] and the 2D behavior, where up to three anomalous structural regions was found [49,62]? To unveil this location, we expand our previous works [64,82,83] to see what happens in the quasi-2D limit with the CS model confined between two flat, highly repulsive solvophobic walls. Our findings indicate that the limit between 2D-like or 3D-like behavior is associated to the layering and with the existence of order-disorder transitions in the layers.…”

Section: Of 12mentioning

confidence: 99%

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How Dimensionality Affects the Structural Anomaly in a Core-Softened Collo

Krott¹,

Bordin²

2023

Preprint

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The interaction between hard-core soft-shell colloids are characterized by having two characteristic distances: one associated with the penetrable, soft corona and another one corresponding to the impenetrable core. Isotropic core-softened potentials with two characteristic length scales have long been applied to understand the properties of such colloids. Those potentials usually show waterlike anomalies, and recent findings have indicated the existence of multiple anomalous regions in the 2D limit under compression, while in 3D only one anomalous region is observed. In this direction, we perform Molecular Dynamics simulations to unveil the details about the structural behavior in the quasi-2D limit of a core-softened colloid. The fluid was confined between highly repulsive solvophobic walls, and the behavior at distinct wall separation and colloid density was analyzed. Our results indicated a straight relation between the 2D or 3D-like behavior and the layers separation. We can relate that if the system behaves as independent 2D-layers, it will have a 2D-like behavior. However, for some separations the layers are connected, with colloids hopping from one layer to another – having then a 3D-like structural behavior. Those findings fill the gap in the depiction of the anomalous behavior from 2D to 3D.

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Section: Of 12mentioning

confidence: 99%

Section: Of 12mentioning

confidence: 99%

How Dimensionality Affects the Structural Anomaly in a Core-Softened Collo

Krott¹,

Bordin²

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Additionally, the structure of colloidal systems has been extensively studied by molecular dynamics and Monte Carlo simulations since hierarchical assembly in a specific patterns at the micro-or macroscopic scale from chemical building blocks can lead to new technologies. In this sense, many distinct of patterns have been observed for 3D bulk [42] and 2D bulk [60][61][62] systems, with confinement being a promissory approach to controlling the self-assembly and obtaining a specific macrostructure system [52,[63][64][65][66][67][68][69][70][71]. In addition, significant differences are reported when going from a 2D to a quasi-2D system.…”

Section: Introductionmentioning

confidence: 99%

“…But where is the boundary between the 3D behavior, with one region of structural anomaly in the fluid phase associated with a crystalline-amorphous solid transition [75,86] and the 2D behavior, where up to three anomalous structural regions were found [49,62]? To unveil the location of this boundary, we expand our previous works [64,82,83] to see what happens in the quasi-2D limit when the CS model is confined between two flat, highly repulsive solvophobic walls. Our findings indicate that the limit between 2D-like or 3D-like behavior is associated with the layering and with the existence of order-disorder transitions in the layers.…”

Section: Introductionmentioning

confidence: 99%

How Dimensionality Affects the Structural Anomaly in a Core-Softened Colloid

Krott

Bordin

2023

Colloids and Interfaces

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The interaction between hard core–soft shell colloids are characterized by having two characteristic distances: one associated with the penetrable, soft corona and another one corresponding to the impenetrable core. Isotropic core-softened potentials with two characteristic length scales have long been applied to understand the properties of such colloids. Those potentials usually show water-like anomalies, and recent findings have indicated the existence of multiple anomalous regions in the 2D limit under compression, while in 3D, only one anomalous region is observed. In this direction, we perform molecular dynamics simulations to unveil the details about the structural behavior in the quasi-2D limit of a core-softened colloid. The fluid was confined between highly repulsive solvophobic walls, and the behavior at distinct wall separations and colloid densities was analyzed. Our results indicated a straight relation between the 2D- or 3D-like behavior and layer separation. We can relate that if the system behaves as independent 2D-layers, it will have a 2D-like behavior. However, for some separations, the layers are connected, with colloids hopping from one layer to another, thus having a 3D-like structural behavior. These findings fill the gap in the depiction of the anomalous behavior from 2D to 3D.

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Stripes polymorphism and water-like anomaly in hard core-soft corona dumbbells

Nogueira,

Bordin

2023

Journal of Molecular Liquids

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Interplay between adsorption, aggregation and diffusion in confined core-softened colloids

Cited by 5 publications

References 80 publications

How Dimensionality Affects the Structural Anomaly in a Core-Softened Collo

How Dimensionality Affects the Structural Anomaly in a Core-Softened Collo

How Dimensionality Affects the Structural Anomaly in a Core-Softened Colloid

Stripes polymorphism and water-like anomaly in hard core-soft corona dumbbells

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