Coalescence in Low-Viscosity Liquids

Sarah C. Case and Sidney R. Nagel
Phys. Rev. Lett. 100, 084503 – Published 28 February 2008

Abstract

The expected universal dynamics associated with the initial stage of droplet coalescence are difficult to study visually due to the rapid motion of the liquid and the awkward viewing geometry. Here we employ an electrical method to study the coalescence of two low-viscosity droplets at early times. We measure the growth dynamics of the bridge connecting the two droplets and observe a new asymptotic regime inconsistent with previous theoretical predictions. The measurements are consistent with a model in which the two liquids coalesce with a slightly deformed interface.

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  • Received 10 September 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.084503

©2008 American Physical Society

Authors & Affiliations

Sarah C. Case and Sidney R. Nagel

  • The James Franck Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637, USA

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Issue

Vol. 100, Iss. 8 — 29 February 2008

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