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À propos de : Controlling Drop Size and Polydispersity Using Chemically PatternedSurfaces        

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  • Controlling Drop Size and Polydispersity Using Chemically PatternedSurfaces
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  • We explore numerically the feasibility of using chemical patterning to control the size and polydispersity of micrometer-scale drops. The simulations suggest that it is possible to sort drops by size or wetting properties by using an arrayof hydrophilic stripes of different widths. We also demonstrate that monodisperse drops can be generated by exploitingthe pinning of a drop on a hydrophilic stripe. Our results follow from using a lattice Boltzmann algorithm to solvethe hydrodynamic equations of motion of the drops and demonstrate the applicability of this approach as a designtool for micofluidic devices with chemically patterned surfaces.
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