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Directed self-assembly of Janus rods

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Anisotropic Janus colloids are emerging building blocks for programmable self-assembly of materials. So far, experimental studies on the self-assembly of Janus particles have focused on the behavior of small clusters formed in dilute suspensions, mainly due to the scarcity of the available colloids. Here, we demonstrate a simple, yet versatile method yielding monodisperse colloids that possess anisotropy in both shape and chemistry. We observe that these particles exhibit hierarchical self-assembly: they first form inverse cylindrical “micelles”, which subsequently stack into highly ordered lanes and ultimately form macroscopic structures. Computer simulations shine further light on the observed structures.

This talk is part of the Physical Chemistry Research Interest Group series.

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