Meniscus osculation and adsorption on geometrically structured walls

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F22%3A00558250" target="_blank" >RIV/67985858:_____/22:00558250 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22340/22:43924825

Result on the web

<a href="http://hdl.handle.net/11104/0331977" target="_blank" >http://hdl.handle.net/11104/0331977</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevE.105.064801" target="_blank" >10.1103/PhysRevE.105.064801</a>

Result language

angličtina

Original language name

Meniscus osculation and adsorption on geometrically structured walls

Original language description

We study the adsorption of simple fluids at smoothly structured, completely wet walls and show that a meniscus osculation transition occurs when the Laplace and geometrical radii of curvature of locally parabolic regions coincide. Macroscopically, the osculation transition is of fractional, 7 2 , order and separates regimes in which the adsorption is microscopic, containing only a thin wetting layer, and mesoscopic, in which a meniscus exists. We develop a scaling theory for the rounding of the transition due to thin wetting layers and derive critical exponent relations that determine how the interfacial height scales with the geometrical radius of curvature. Connection with the general geometric construction proposed by Rascón and Parry is made. Our predictions are supported by a microscopic model density functional theory for drying at a sinusoidally shaped hard wall where we confirm the order of the transition and also an exact sum rule for the generalized contact theorem due to Upton. We show that as bulk coexistence is approached the adsorption isotherm separates into three regimes: A preosculation regime where it is microscopic, containing only a thin wetting layer, a mesoscopic regime, in which a meniscus sits within the troughs, and finally another microscopic regime where the liquid-gas interface unbinds from the crests of the substrate.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project

<a href="/en/project/GA20-14547S" target="_blank" >GA20-14547S: Interfacial and critical phenomena of simple and complex fluids under nano-structured confinement</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Physical Review E

ISSN

2470-0045

e-ISSN

2470-0053

Volume of the periodical

105

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

064801

UT code for WoS article

000809499500007

EID of the result in the Scopus database

2-s2.0-85132103994