Contact: Michael Patrick Rutter
Caption: These are electron microscope images of "colloidal atoms," micrometer-sized particles with patches that allow bonding only along particular directions. From left to right: particle with one patch (analogous to a hydrogen atom), two, three, four (analogous to a carbon atom), five, six, and seven patches.
Credit: Image courtesy of Vinothan N. Manoharan and David J. Pine.
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