منابع مشابه
A high rate flow-focusing foam generator
We use a rigid axisymetric microfluidic flow focusing device to produce monodisperse bubbles, dispersed in a surfactant solution. The gas volume fraction of the dispersion collected out of this device can be as large as 90%, demonstrating that foam with solid-like viscoelastic properties can be produced in this way. The polydispersity of the bubbles is so low that we observe crystallization of ...
متن کاملSimulation of a 3D Flow-Focusing Capillary-Based Droplet Generator
Introduction Droplet-based microfluidics is a research area that has caught the attention of different disciplines in the past decade[1]. Droplets of immiscible fluids (typically water in oil W/O or oil in water O/W) have been used as confined pL-nL size reaction chambers in which reagents and conditions are precisely controlled. Applications of this technology include: single cell assays, gas-...
متن کاملSimulation of a Parallelizable Flow-Focusing Constant-Volume Droplet Generator
Microfluidic droplet generators offer distinctive advantages to create emulsions that cannot be matched by conventional methods such as membrane or batch emulsification[1]. Since microfluidic droplets are created in a confined and controlled space in a chip, they can be used as micro-reactors to perform delicate chemical reactions that take advantage of the scaling laws associated with miniatur...
متن کاملOptimized Channel Geometry of a Flow-Focusing Droplet Generator for Parallelization
Microfluidic droplet generators are devices that can produce monodisperse emulsions of two immiscible fluids when shearing forces of a continuous phase overcome the surface tension of the disperse phase. Thus droplets are formed. Applications of this technology are found in high added value industries such as those in pharmaceuticals, photonics, aggressive chemical industry, molecular biology, ...
متن کاملNonlinear dynamics of a flow-focusing bubble generator: an inverted dripping faucet.
We describe the rich dynamic behavior--including period-doubling and period-halving bifurcations, intermittency, and chaos--observed in the breakup of an inviscid fluid in a coflowing, viscous liquid, both confined in a microfabricated flow-focusing geometry. Experimental observations support inertia-dominated dynamics of the interface, and suggest the possible similarity to the dynamics of a t...
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2006
ISSN: 1070-6631,1089-7666
DOI: 10.1063/1.2353799