Density-driven flows in evaporating binary liquid droplets

Edwards, AMJ ORCID: https://orcid.org/0000-0003-3338-1287, Atkinson, PS ORCID: https://orcid.org/0000-0002-2398-8424, Cheung, CS, Liang, H ORCID: https://orcid.org/0000-0001-9496-406X, Fairhurst, DJ ORCID: https://orcid.org/0000-0001-5311-0762 and Ouali, FF ORCID: https://orcid.org/0000-0002-6530-6786, 2018. Density-driven flows in evaporating binary liquid droplets. Physical Review Letters, 121 (18): 184501. ISSN 0031-9007

Preview

Text 12510_Ouali.pdf - Published version Download (1MB) | Preview

Abstract

In the evaporation of microlitre liquid droplets, the accepted view is that surface tension dominates and the effect of gravity is negligible. We report, through the first use of rotating optical coherence tomography, that a change in the flow pattern and speed occurs when evaporating binary liquid droplets are tilted, conclusively showing that gravitational effects dominate the flow. We use gas chromatography to show that these flows are solutal in nature, and we establish a flow phase diagram demonstrating the conditions under which different flow mechanisms occur.

Item Type:	Journal article
Publication Title:	Physical Review Letters
Creators:	Edwards, A.M.J., Atkinson, P.S., Cheung, C.S., Liang, H., Fairhurst, D.J. and Ouali, F.F.
Publisher:	American Physical Society
Date:	2 November 2018
Volume:	121
Number:	18
ISSN:	0031-9007
Identifiers:	Number Type 10.1103/physrevlett.121.184501 DOI
Rights:	© 2018 American Physical Society.
Divisions:	Schools > School of Science and Technology
Record created by:	Linda Sullivan
Date Added:	12 Nov 2018 14:17
Last Modified:	27 Aug 2021 10:12
URI:	https://irep.ntu.ac.uk/id/eprint/34918

Actions (login required)

Edit View

Statistics

Views

Downloads