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Title: Vapor-induced attraction of floating droplets
Authors: Liu, Dongdong
Tran, Tuan
Keywords: Engineering::Mechanical engineering
Issue Date: 2018
Source: Liu, D., & Tran, T. (2018). Vapor-induced attraction of floating droplets. The Journal of Physical Chemistry Letters, 9(16), 4771-4775. doi:10.1021/acs.jpclett.8b01742
Journal: The Journal of Physical Chemistry Letters
Abstract: Droplets partially submersed in an immiscible liquid pool attract each other. We experimentally study the interaction of floating droplets containing aqueous solution of a volatile liquid. A droplet affects its neighbors by generating a vapor gradient to the surroundings and responds by evaporating asymmetrically over its exposed cap. We show that the induced asymmetric temperature distribution causes a surface tension gradient driving the attracting motion. We highlight that the attracting dynamics starts with an accelerating stage, followed by a decelerating stage. We finally provide a theoretical model that quantitatively captures the interactive forces between droplets and predicts essential features of the attracting motion.
ISSN: 1948-7185
DOI: 10.1021/acs.jpclett.8b01742
Rights: © 2018 American Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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