Advanced Materials · 2006 · 62 citations · 30 references
EngineeringContinuous TransitionMicrofluidic ConfinementSurface Composition GradientsPolymersRelative Flow RatesMicrofluidicsBiophysicsPolymer ChemistryMaterials ScienceSolution GradientNanofluidicsSurface ModificationStatistical‐copolymer‐brush Composition GradientPolymer SolutionSurface FunctionalizationMicrofabricationPolymer ScienceAmphiphilic SystemPolymerization KineticsPolymer Self-assembly
A stable solution composition gradient is generated inside a microchannel by varying the relative flow rates of two solutions that differ in composition. This solution gradient is used to synthesize a surface-grafted statistical-copolymer-brush composition gradient via surface-initiated atom transfer radical polymerization (ATRP; see schematic). Near-edge absorption fine structure spectroscopy confirms the continuous transition of surface composition from one end of the substrate to the other.
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Chaotic Mixer for Microchannels
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Materials Science, Polymer Droplets, Random Copolymer Brushes +11
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