Bridging of Liquid Drops at Chemically Structured Walls.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F19%3A00504320" target="_blank" >RIV/67985858:_____/19:00504320 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22340/19:43918381

Výsledek na webu

<a href="https://arxiv.org/pdf/1905.00308.pdf" target="_blank" >https://arxiv.org/pdf/1905.00308.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevE.99.042804" target="_blank" >10.1103/PhysRevE.99.042804</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bridging of Liquid Drops at Chemically Structured Walls.

Popis výsledku v původním jazyce

Using mesoscopic interfacial models and microscopic density functional theory we study fluid adsorption at a dry wall decorated with three completely wet stripes of width L separated by distances D1 and D2. The stripes interact with the fluid with long-range forces inducing a large finite-size contribution to the surface free energy. We show that this nonextensive free-energy contribution scales with lnL and drives different types of bridging transition corresponding to the merging of liquid drops adsorbed at neighboring wetting stripes when the separation between them is molecularly small. We determine the surface phase diagram and show that this exhibits two triple points, where isolated drops, double drops, and triple drops coexist. For the symmetric case, D1=D2≡D, our results also confirm that the equilibrium droplet configuration always has the symmetry of the substrate corresponding to either three isolated drops when D is large or a single triple drop when D is small. However, symmetry-broken configurations do occur in a metastable part of the phase diagram which lies very close to the equilibrium-bridging phase boundary. Implications for phase transitions on other types of patterned surface are considered.

Název v anglickém jazyce

Bridging of Liquid Drops at Chemically Structured Walls.

Popis výsledku anglicky

Using mesoscopic interfacial models and microscopic density functional theory we study fluid adsorption at a dry wall decorated with three completely wet stripes of width L separated by distances D1 and D2. The stripes interact with the fluid with long-range forces inducing a large finite-size contribution to the surface free energy. We show that this nonextensive free-energy contribution scales with lnL and drives different types of bridging transition corresponding to the merging of liquid drops adsorbed at neighboring wetting stripes when the separation between them is molecularly small. We determine the surface phase diagram and show that this exhibits two triple points, where isolated drops, double drops, and triple drops coexist. For the symmetric case, D1=D2≡D, our results also confirm that the equilibrium droplet configuration always has the symmetry of the substrate corresponding to either three isolated drops when D is large or a single triple drop when D is small. However, symmetry-broken configurations do occur in a metastable part of the phase diagram which lies very close to the equilibrium-bridging phase boundary. Implications for phase transitions on other types of patterned surface are considered.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA17-25100S" target="_blank" >GA17-25100S: Geometricky a chemicky strukturované povrchy: od rovnováhy k dynamice</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Physical Review E

ISSN

2470-0045

e-ISSN

—

Svazek periodika

999

Číslo periodika v rámci svazku

30 April

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

042804

Kód UT WoS článku

000466433800008

EID výsledku v databázi Scopus

2-s2.0-85065447305