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(a) Close-up images of the narrowing down of the central stream near the channel junction. (b) Effect of the flow rate ratio on the narrowing of the central stream at the exit of the channel junction at different . The width was measured from microscopic images after the flows reached a steady state.
Unsteady breakup of the focused viscous microthread into irregularly shaped droplets (a) and polydisperse droplets (b) in the initial stages of breakup. .
Precise control of droplet size in the present microfluidic system through control of the operating flow condition. [(a) , , . (b) , , . (c) , , ]. Although the droplets formed within the microfluidic channel are disc-like in shape since the depth of channels is about , the diameters reported here were converted into the diameters of spherical droplets for the sake of data comparison.
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