Condensation and Evaporation Transitions in Deep Capillary Grooves

Kód výsledku v IS VaVaI

RIV/67985858:_____/14:00435405 - isvavai.cz

Nalezeny alternativní kódy

RIV/60461373:22340/14:43897769

Výsledek na webu

http://dx.doi.org/10.1088/0953-8984/26/35/355003

DOI - Digital Object Identifier

10.1088/0953-8984/26/35/355003

Jazyk výsledku

angličtina

Název v původním jazyce

Condensation and Evaporation Transitions in Deep Capillary Grooves

Popis výsledku v původním jazyce

We study the order of capillary condensation and evaporation transitions of a simple fluid adsorbed in a deep capillary groove using a fundamental measure density functional theory (DFT). The walls of the capillary interact with the fluid particles via long-ranged, dispersion, forces while the fluid-fluid interaction is modelled as a truncated Lennard-Jones-like potential. We find that below the wetting temperature T-w condensation is first-order and evaporation is continuous with the metastability of the condensation being well described by the complementary Kelvin equation. In contrast above T-w both phase transitions are continuous and their critical singularities are determined. In addition we show that for the evaporation transition above T-w there is an elegant mapping, or covariance, with the complete wetting transition occurring at a planar wall. Our numerical DFT studies are complemented by analytical slab model calculations which explain how the asymmetry between condensation

Název v anglickém jazyce

Condensation and Evaporation Transitions in Deep Capillary Grooves

Popis výsledku anglicky

We study the order of capillary condensation and evaporation transitions of a simple fluid adsorbed in a deep capillary groove using a fundamental measure density functional theory (DFT). The walls of the capillary interact with the fluid particles via long-ranged, dispersion, forces while the fluid-fluid interaction is modelled as a truncated Lennard-Jones-like potential. We find that below the wetting temperature T-w condensation is first-order and evaporation is continuous with the metastability of the condensation being well described by the complementary Kelvin equation. In contrast above T-w both phase transitions are continuous and their critical singularities are determined. In addition we show that for the evaporation transition above T-w there is an elegant mapping, or covariance, with the complete wetting transition occurring at a planar wall. Our numerical DFT studies are complemented by analytical slab model calculations which explain how the asymmetry between condensation

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

GA13-09914S: Studium difuzních procesů v porézních látkách s proměnnou propustností

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics-Condensed Matter

ISSN

0953-8984

e-ISSN

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Svazek periodika

26

Číslo periodika v rámci svazku

35

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

000341110600005

EID výsledku v databázi Scopus

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