• Publications
  • Influence
Inertial migration of a rigid sphere in three-dimensional Poiseuille flow
Inertial lift forces are exploited within inertial microfluidic devices to position, segregate, and sort particles or droplets. However the forces and their focusing positions can currently only beExpand
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Trapping microfluidic drops in wells of surface energy.
A small hole etched in the top of a wide microchannel creates a well of surface energy for a confined drop. This produces an attractive force F(γ) equal to the energy gradient, which is estimatedExpand
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Crawling beneath the free surface: Water snail locomotion
Land snails move via adhesive locomotion. Through muscular contraction and expansion of their foot, they transmit waves of shear stress through a thin layer of mucus onto a solid substrate. Since aExpand
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Behavior of a particle-laden flow in a spiral channel
Spiral gravity separators are devices used in mineral processing to separate particles based on their specific gravity or size. The spiral geometry allows for the simultaneous application ofExpand
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Formation and Destabilization of the Particle Band on the Fluid-Fluid Interface.
  • J. Kim, F. Xu, S. Lee
  • Materials Science, Medicine
  • Physical review letters
  • 21 November 2016
An inclusion of particles in a Newtonian liquid can fundamentally change the interfacial dynamics and even cause interfacial instabilities. For instance, viscous fingering can arise even in theExpand
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Interface-induced recirculation within a stationary microfluidic drop
We study the flow within a stationary drop in a Hele-Shaw cell. The experiments are performed in a microfluidic channel, whose surface is patterned with a single hole that serves to anchor the dropExpand
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Droplet depinning in a wake
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Trapping and release of giant unilamellar vesicles in microfluidic wells.
We describe the trapping and release of giant unilamellar vesicles (GUVs) in a thin and wide microfluidic channel, as they cross indentations etched in the channel ceiling. This trapping results fromExpand
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A two-dimensional model of low-Reynolds number swimming beneath a free surface
Biological organisms swimming at low-Reynolds number are often influenced by the presence of rigid boundaries and soft interfaces. In this paper, we present an analysis of locomotion near a freeExpand
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Manipulation of biological objects using acoustic bubbles: a review.
  • Y. Chen, S. Lee
  • Biology, Medicine
  • Integrative and comparative biology
  • 1 December 2014
When a bubble oscillates in an acoustically driven pressure field, its oscillations result in an attractive force on micro-sized objects in the near field. At the same time, the objects are subjectExpand
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