Basit öğe kaydını göster

dc.contributor.authorSalem, Thamer Khalif
dc.contributor.authorBudaklı, Mete
dc.contributor.authorŞahan, Oğuz
dc.contributor.authorArık, Mehmet
dc.date.accessioned2021-01-08T21:51:23Z
dc.date.available2021-01-08T21:51:23Z
dc.date.issued2018
dc.identifier.issn0927-7757
dc.identifier.issn1873-4359
dc.identifier.urihttp://doi.org/10.1016/j.colsurfa.2018.06.084
dc.identifier.urihttps://hdl.handle.net/20.500.12846/216
dc.descriptionBUDAKLI, Mete/0000-0003-1721-1245;en_US
dc.descriptionWOS:000443153100022en_US
dc.description.abstractControlling dust, particle, gas or liquid attachment or motion over the surfaces is attracting many researchers to reduce losses or reach mission-specific goals. Therefore, researchers have been developing novel surfaces so that performance increase, such as heat transfer, or reduction of energy losses, such as pressure loss, will be achieved. One of those approaches is hydrophobic surfaces that are widely used in order to increase liquid repellence commonly by controlling the liquid-solid contact angle. To ensure desired contact angles between the surface and liquid, these micro-nano-textured surfaces are fabricated by using advanced manufacturing technologies and methods like etching, electrospinning, and chemical vapor deposition. While, these fabricated surfaces can be used for a variety of purposes, such as protecting the material e.g. from corrosion, changing the surface property to avoid deposition or preventing icing on aircraft wings; hydrophobicity is also a key parameter for heat transfer systems such as heat exchangers, refrigerators, and industrially used condensers, as the focus of current study. In this work, a set of experimental and analytical studies has been conducted to investigate the influence of micro-nano-textured surfaces on the liquid wetting phenomena. Since the liquid-wall interaction is a key parameter in terms of droplet formation, the present work represents an essential contribution to our major research focused on heat transfer performance of heat pipe condenser. Copper samples with three different surface topographies at micro-scale (unstructured-smooth, square-grooved and v-grooved) have been subjected to a chemical treatment process by applying commercially available nano-particles using dip-coating and spraycoating techniques. These types of surfaces have been chosen to understand the effect of micro-structuring/coating on wettability, droplet formation and their dynamics. Before and after the coating procedure, measurements have been performed with de-ionized water in order to determine the difference in droplet contact angle at the surfaces to be used. In the analytical part, capillary Laplace equation with available analytical correlations from the literature has been used to predict the contact angles and surface energies on the surfaces to be investigated. The experimental results have been validated with the analytical approaches. When bare surface experimental results are compared with uncoated samples, it is found that the average water contact angle (WCA) increases by 34.5% and 52.5% for the square-grooved and v-grooved surface. Analytical calculations compared to experimental results show a reasonable deviation of 2.3% and 4.1% for both square-grooved and v-grooved surface, respectively. Moreover, analytically validated results clearly show that the coated square-grooved surface has a larger average contact angle than the v-grooved surface by 4.6%.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); Marie Curie Actions under FP7European Union (EU) [116C027]en_US
dc.description.sponsorshipThis project has been funded by The Scientific and Technological Research Council of Turkey (TUBITAK), co-funded by Marie Curie Actions under FP7 (Project leader: Assist. Prof. Dr. Mete Budakli, Research Grant No. 116C027). Authors would like to thank also Assist. Prof. Dr. Bahar Basim, for giving access to Chemical laboratory and EVATEG Center for using state of the art facilities at Ozyegin University.en_US
dc.language.isoengen_US
dc.publisherElsevier Science Bven_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSuperhydrophobic Surfacesen_US
dc.subjectWettabilityen_US
dc.subjectMicrostructuresen_US
dc.subjectSurface Tensionen_US
dc.subjectSurface Energyen_US
dc.titleAn experimental and analytical study on the influence of superhydrophobic micro-textured surfaces on liquid wetting phenomenaen_US
dc.typearticleen_US
dc.relation.journalColloids And Surfaces A-Physicochemical And Engineering Aspectsen_US
dc.identifier.volume555en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.contributor.departmentTAÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.identifier.doi10.1016/j.colsurfa.2018.06.084
dc.identifier.startpage191en_US
dc.identifier.endpage200en_US
dc.identifier.wosqualityQ2en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.wosWOS:000443153100022en_US


Bu öğenin dosyaları:

DosyalarBoyutBiçimGöster

Bu öğe ile ilişkili dosya yok.

Bu öğe aşağıdaki koleksiyon(lar)da görünmektedir.

Basit öğe kaydını göster