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Meso-scale systems, that is, structures and phenom-ena having spatial dimensions in the range extending from large molecules (perhaps 10 nm) through viruses to eukaryotic cells (10/tin), are one of the frontiers of chemistry. These systems are the home of complexity, and understanding this complexity requires new ap-proaches to synthesis and fabrication. Among these approaches are those based on chemical concepts such as molecular self-assembly and synthesis of structures at thermodynamic equilibrium. 12 Meso-scale systems offeropportunities to explore phenomena that occur at dimensions larger than molecules but smaller than cells. The distinctive properties of meso-scale systems arise when the characteristic length of a process of interest, such as ballistic movement of an electron, 3 excitation of a collective resonance by light, 4 diffusion of a redox-active molecule close to an electrode, 5 or …