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Analiza Laplaceovega tlaka v kapljici pri prehodu med režimoma omočenja površineVodopivec, Matevž, strojnik ...Supehidrofobne površine so v zadnjih letih deležne posebne pozornosti, saj izkazujejo unikatne lastnosti kot so samočistilni učinek, zagotavljajo izboljšanje prenosa toplote pri vrenju, preprečujejo ... korozijo in zmrzovanje kapljevin na površini ter zmanjšujejo viskozni upor. Za ohranitev teh lastnosti pa morajo biti površine primerno robustne. V delu smo analizirali robustnost superhidrofobnih površin in z uporabo optične metode določili tlake, pri katerih na superhidrofobnih površinah nastopi prehod med Cassie-Baxterjevim in Wenzelovim kotom omočenja. Površine smo hidrofobizirali s tremi različnimi sredstvi: FDPA, PDMS in HTMS ter jih karakterizirali glede na njihovo omočljivost. Kapljice smo stiskali med dve enaki superhidrofobni površini in pri tem zajeli slike za analizo doseženega tlaka. Površina s PDMS nanosom je prehod dosegla pri najnižjem tlaku, površina s HTMS nanosom pa pri najvišjem. Rezultat površine PDMS je pripisan njeni večji omočljivosti v primerjavi z ostalima površinama, medtem ko ta razlaga ne drži za razliko med površinama FDPA in HTMS. Dosežen visok Laplaceov tlak kapljice, potreben za prehod med režimoma na površini s HTMS nanosom, izkazuje njeno večjo odpornost na povišan tlak in posledično večjo robustnost v primeru uporabe v določenih inženirsko pomembnih aplikacijah kot recimo za izdelavo samočistilnih površin ali pri izboljšanem dvofaznem prenosu toplote.Source: Svet strojništva. - ISSN 1855-6493 (Letn. 12, št. 1/2, sep. 2023, str. 4-11)Type of material - article, component part ; adult, seriousPublish date - 2023Language - slovenianCOBISS.SI-ID - 166362115
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Vodopivec, Matevž, strojnik | ![]() |
Jereb, Samo, 1998- | 56976 |
Može, Matic | 52341 |
Zupančič, Matevž, 1990- | 36685 |
Golobič, Iztok | 05566 |
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and: SICRIS
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