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Related Concept Videos

Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model01:09

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Related Experiment Video

Updated: May 8, 2026

Fabricating High-viscosity Droplets using Microfluidic Capillary Device with Phase-inversion Co-flow Structure
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Published on: April 17, 2018

Impact-Driven Cavity Evolution: The Role of Miscibility in Droplet-Pool Interaction.

Shrirang Shivankar1, Eduardo Castillo-Orozco2,3, Ankur Miglani1

  • 1Microfluidics and Droplet Dynamics Lab, Department of Mechanical Engineering, Indian Institute of Technology, Indore, Madhya Pradesh 453552, India.

Langmuir : the ACS Journal of Surfaces and Colloids
|May 7, 2026
PubMed
Summary

This study compares droplet impacts on liquid films for miscible and immiscible systems. Immiscible impacts create distinct cavity evolution, intensified recirculation, and lower peak pressures, accelerating jet formation.

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Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids
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Last Updated: May 8, 2026

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08:02

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Published on: April 17, 2018

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Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids
10:09

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids

Published on: March 5, 2014

Area of Science:

  • Fluid dynamics
  • Interfacial phenomena

Background:

  • Droplet impact on liquid films is crucial in various applications like drug delivery and inkjet printing.
  • Most research has focused on miscible systems, leaving immiscible droplet-pool dynamics less explored.

Purpose of the Study:

  • To compare cavity evolution, velocity fields, and pressure distributions between miscible and immiscible droplet impacts on liquid films.
  • To elucidate the distinct physical mechanisms governing each regime.

Main Methods:

  • Experimental comparison of cavity evolution for miscible and immiscible droplet impacts.
  • Analysis of velocity fields and pressure distributions.

Main Results:

  • Both systems exhibit similar initial impact force magnitudes but differ in distribution and contact area.
  • Miscible impacts form near-spherical cavities, while immiscible impacts show intensified recirculation and suppressed vortices.
  • Immiscible impacts result in lower peak pressures and accelerated cavity retraction, promoting Worthington jet formation.

Conclusions:

  • Interfacial tension in immiscible systems significantly alters cavity morphology, force distribution, and flow dynamics compared to miscible systems.
  • A theoretical model is proposed to predict reduced cavity formation time in immiscible impacts based on interfacial tension.