Eujin Um
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View article: Symmetrically pulsating bubbles swim in an anisotropic fluid by nematodynamics
Symmetrically pulsating bubbles swim in an anisotropic fluid by nematodynamics Open
Swimming in low-Reynolds-number fluids requires the breaking of time-reversal symmetry and centrosymmetry. Microswimmers, often with asymmetric shapes, exhibit nonreciprocal motions or exploit nonequilibrium processes to propel. The role o…
View article: Symmetrically pulsating bubbles swim in an anisotropic fluid by nematodynamics
Symmetrically pulsating bubbles swim in an anisotropic fluid by nematodynamics Open
Swimming in low-Reynolds-number fluids requires the breaking of time-reversal symmetry and centrosymmetry. Microswimmers, often with asymmetric shapes, exhibit nonreciprocal motions or exploit nonequilibrium processes to propel. The role o…
View article: Blood Plasma Separation: Enhanced Diamagnetic Repulsion of Blood Cells Enables Versatile Plasma Separation for Biomarker Analysis in Blood (Small 23/2021)
Blood Plasma Separation: Enhanced Diamagnetic Repulsion of Blood Cells Enables Versatile Plasma Separation for Biomarker Analysis in Blood (Small 23/2021) Open
In article 2100797, Joo H. Kang, and co-authors present a new blood plasma extraction device using augmented diamagnetic repulsion of blood cells by supplementing superparamagnetic iron oxide nanoparticles to whole blood and demonstrate it…
View article: Phase synchronization of fluid-fluid interfaces as hydrodynamically coupled oscillators
Phase synchronization of fluid-fluid interfaces as hydrodynamically coupled oscillators Open
Hydrodynamic interactions play a role in synchronized motions of coupled oscillators in fluids, and understanding the mechanism will facilitate development of applications in fluid mechanics. For example, synchronization phenomenon in two-…
View article: Correction: Immature dendritic cells navigate microscopic mazes to find tumor cells
Correction: Immature dendritic cells navigate microscopic mazes to find tumor cells Open
Correction for ‘Immature dendritic cells navigate microscopic mazes to find tumor cells’ by Eujin Um et al., Lab Chip, 2019, 19, 1665–1675.
View article: Controlled Uniform Coating from the Interplay of Marangoni Flows and Surface-Adsorbed Macromolecules
Controlled Uniform Coating from the Interplay of Marangoni Flows and Surface-Adsorbed Macromolecules Open
Surface coatings and patterning technologies are essential for various physicochemical applications. In this Letter, we describe key parameters to achieve uniform particle coatings from binary solutions. First, multiple sequential Marangon…
View article: Size-dependent control of colloid transport via solute gradients in dead-end channels
Size-dependent control of colloid transport via solute gradients in dead-end channels Open
Significance Dead-end geometries are commonly found in many porous systems. Particle transport into such dead-end pores is often important, but is difficult to achieve owing to the confinement. It is natural to expect that Brownian motion …
View article: Magnetic Separation: Optimization of Pathogen Capture in Flowing Fluids with Magnetic Nanoparticles (Small 42/2015)
Magnetic Separation: Optimization of Pathogen Capture in Flowing Fluids with Magnetic Nanoparticles (Small 42/2015) Open
D. E. Ingber and co-workers illustrate the capture and removal of bacterial cells from flowing blood by binding them to different-sized magnetic particles that are pulled by magnetic fields. On page 5657, they explain how the optimal size …