Počet záznamů: 1
Breaking Cassie’s Law for Condensation in a Nanopatterned Slit.
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SYSNO ASEP 0541155 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Breaking Cassie’s Law for Condensation in a Nanopatterned Slit. Tvůrce(i) Láska, Martin (UCHP-M) ORCID, RID, SAI
Parry, A.O. (GB)
Malijevský, Alexandr (UCHP-M) RID, ORCID, SAIČíslo článku 125701 Zdroj.dok. Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 126, č. 12 (2021)Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova capilary condensation ; phase-equilibria ; nerrow pores Vědní obor RIV BE - Teoretická fyzika Obor OECD Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) CEP GA20-14547S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000646119900015 EID SCOPUS 85103442160 DOI 10.1103/PhysRevLett.126.125701 Anotace We study the phase transitions of a fluid confined in a capillary slit made from two adjacent walls, each of which are a periodic composite of stripes of two different materials. For wide slits the capillary condensation occurs at a pressure which is described accurately by a combination of the Kelvin equation and the Cassie law for an averaged contact angle. However, for narrow slits the condensation occurs in two steps involving an intermediate bridging phase, with the corresponding pressures described by two new Kelvin equations. These are characterised by different contact angles due to interfacial pinning, with one larger and one smaller than the Cassie angle. We determine the triple point and predict two types of dispersion force induced Derjaguin-like corrections due to mesoscopic volume reduction and the singular free-energy contribution from nanodroplets and bubbles. We test these predictions using a fully microscopic density functional model which confirms their validity even for molecularly narrow slits. Analogous mesoscopic corrections are also predicted for two-dimensional systems arising from thermally induced interfacial wandering. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2022 Elektronická adresa https://spiral.imperial.ac.uk:8443/bitstream/10044/1/88421/2/slit_periodic_letter2.pdf
Počet záznamů: 1