Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Segregation in dissolving binary-component sessile droplets

Dietrich, E., Rump, M., Lv, P., Kooij, E. S., Zandvliet, H. J. W., & Lohse, D. (2017). Segregation in dissolving binary-component sessile droplets. Journal of Fluid Mechanics, 812, 349-369. doi:10.1017/jfm.2016.802.

Item is

Urheber

einblenden:
ausblenden:
 Urheber:
Dietrich, E., Autor
Rump, M., Autor
Lv, P., Autor
Kooij, E. S., Autor
Zandvliet, H. J. W., Autor
Lohse, Detlef1, Autor           
Affiliations:
1Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063285              

Inhalt

einblenden:
ausblenden:
Schlagwörter: corwection; drops and bubbles; plumes/thermals
 Zusammenfassung: The dissolution of a single droplet, containing a mixture of oils, in water is experimentally studied. The oils in the droplet varied in terms of their solubility in water and their hydrophobicity. We demonstrate that the polarity of the droplet constituents strongly influences the dissolution dynamics. A binary-component droplet, containing two polar components (one soluble the other insoluble) exhibits a retarded dissolution as compared to a droplet containing only the soluble component. We argue that in this case the mixture in the droplet can he assumed homogeneous, leading to a smaller effective contact area of the soluble liquid in the droplet with the hulk water, and thus delayed dissolution. On the other hand, it is shown that this is not the case when a polar, soluble component is mixed with an insoluble non-polar component, in which case segregation between the different liquids inside the droplet occurs, leading to Marangoni flows and superspreading of the droplet. The segregation is confirmed by volumetric measurements and by the use of a solvatochromic dye in combination with confocal microscopy, which clearly showed that during dissolution local concentration differences inside the droplet developed.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2016-12-282017-02
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1017/jfm.2016.802
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Journal of Fluid Mechanics
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 812 Artikelnummer: - Start- / Endseite: 349 - 369 Identifikator: -