Selective Adsorption of Microcapsules on Patterned Polyelectrolyte Multilayers


  • We thank Prof. B. Yang for his great help with fabricating the PDMS stamps, and R. Lu for drawing the sketch maps. Prof. H. Möhwald is greatly acknowledged for his stimulating discussions. This study is financially supported by the Natural Science Foundation of China (90206006).


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Selective adsorption of microcapsules was achieved by utilizing electrostatic interactions between the capsule surfaces and chemically and physically patterned substrates. Pressing a poly(dimethylsiloxane) stamp consisting of periodic strips and inked with a poly(diallyldimethylammonium chloride) solution onto polyelectrolyte multilayers with an outermost poly(styrene sulfonic acid) layer creates patterns that can guide the linear alignment of the microcapsules.