Počet záznamů: 1
Wetting Properties of Molecularly Rough Surfaces
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SYSNO ASEP 0448504 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Wetting Properties of Molecularly Rough Surfaces Tvůrce(i) Svoboda, Martin (UCHP-M) RID, SAI, ORCID
Malijevský, Alexandr (UCHP-M) RID, ORCID, SAI
Lísal, Martin (UCHP-M) RID, ORCID, SAIZdroj.dok. Journal of Chemical Physics. - : AIP Publishing - ISSN 0021-9606
Roč. 143, č. 10 (2015), s. 104701Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova contant-angle ; solid-surface ; dynamics Vědní obor RIV BJ - Termodynamika CEP GA13-09914S GA ČR - Grantová agentura ČR LH12020 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000361572900062 EID SCOPUS 84941092320 DOI 10.1063/1.4930084 Anotace We employ molecular dynamics simulations to study the wettability of nanoscale rough surfaces in systems governed by Lennard-Jones (LJ) interactions. We consider both smooth and molecularly rough planar surfaces. Solid substrates are modeled as a static collection of LJ particles arranged in a face-centered cubic lattice with the (100) surface exposed to the LJ fluid. Molecularly rough solid surfaces are prepared by removing several strips of LJ atoms from the external layers of the substrate, i.e., forming parallel nanogrooves on the surface. We vary the solid-fluid interactions to investigate strongly and weakly wettable surfaces. We determine the wetting properties by measuring the equilibrium droplet profiles that are in turn used to evaluate the contact angles. Macroscopic arguments, such as those leading to Wenzel's law, suggest that surface roughness always amplifies the wetting properties of a lyophilic surface. However, our results indicate the opposite effect from roughness for microscopically corrugated surfaces, i.e., surface roughness deteriorates the substrate wettability. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2016
Počet záznamů: 1