Sedimentation of a Two-Dimensional Colloidal Mixture Exhibiting Liquid-Liquid and Gas-Liquid Phase Separation: A Dynamical Density Functional Theory Study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F13%3A00425957" target="_blank" >RIV/67985858:_____/13:00425957 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22340/13:43895557

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4823768" target="_blank" >http://dx.doi.org/10.1063/1.4823768</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4823768" target="_blank" >10.1063/1.4823768</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sedimentation of a Two-Dimensional Colloidal Mixture Exhibiting Liquid-Liquid and Gas-Liquid Phase Separation: A Dynamical Density Functional Theory Study

Popis výsledku v původním jazyce

We present dynamical density functional theory results for the time evolution of the density distribution of a sedimenting model two-dimensional binary mixture of colloids. The interplay between the bulk phase behaviour of the mixture, its interfacial properties at the confining walls, and the gravitational field gives rise to a rich variety of equilibrium and non-equilibrium morphologies. In the fluid state, the system exhibits both liquid-liquid and gas-liquid phase separation. As the system sediments, the phase separation significantly affects the dynamics and we explore situations where the final state is a coexistence of up to three different phases. Solving the dynamical equations in two-dimensions, we find that in certain situations the final density profiles of the two species have a symmetry that is different from that of the external potentials, which is perhaps surprising, given the statistical mechanics origin of the theory. The paper concludes with a discussion on this.

Název v anglickém jazyce

Sedimentation of a Two-Dimensional Colloidal Mixture Exhibiting Liquid-Liquid and Gas-Liquid Phase Separation: A Dynamical Density Functional Theory Study

Popis výsledku anglicky

We present dynamical density functional theory results for the time evolution of the density distribution of a sedimenting model two-dimensional binary mixture of colloids. The interplay between the bulk phase behaviour of the mixture, its interfacial properties at the confining walls, and the gravitational field gives rise to a rich variety of equilibrium and non-equilibrium morphologies. In the fluid state, the system exhibits both liquid-liquid and gas-liquid phase separation. As the system sediments, the phase separation significantly affects the dynamics and we explore situations where the final state is a coexistence of up to three different phases. Solving the dynamical equations in two-dimensions, we find that in certain situations the final density profiles of the two species have a symmetry that is different from that of the external potentials, which is perhaps surprising, given the statistical mechanics origin of the theory. The paper concludes with a discussion on this.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-09914S" target="_blank" >GA13-09914S: Studium difuzních procesů v porézních látkách s proměnnou propustností</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Chemical Physics

ISSN

0021-9606

e-ISSN

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Svazek periodika

139

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

000325780800047

EID výsledku v databázi Scopus

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