Colloidal ionic complexes on periodic substrates: ground-state configurations and pattern switching.

Abstract

We theoretically and numerically studied ordering of "colloidal ionic clusters" on periodic substrate potentials such as those generated by optical trapping. Each cluster consists of three charged spherical colloids: two negatively and one positively charged. The substrate is a square or rectangular array of traps, each confining one such cluster. By… (More)

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