Grünwald, MichaelTricard, SimonWhitesides, GeorgeGeissler, Phillip L.2017-01-172016Grünwald, Michael, Simon Tricard, George M. Whitesides, and Phillip L. Geissler. 2016. Exploiting Non-Equilibrium Phase Separation for Self-Assembly. Soft Matter 12, no. 5: 1517–1524. doi:10.1039/c5sm01922b.1744-683Xhttp://nrs.harvard.edu/urn-3:HUL.InstRepos:29991616Demixing can occur in systems of two or more particle species that experience different driving forces, e.g., mixtures of self-propelled active particles or of oppositely charged colloids subject to an electric field. Here we show with macroscopic experiments and computer simulations that the forces underlying such non-equilibrium segregation can be used to control the self-assembly of particles that lack attractive interactions. We demonstrate that, depending on the direction, amplitude and frequency of a periodic external force acting on one article species, the structures formed by a second, undriven species can range from compact clusters to elongated, string-like patterns.en-USJournal Article2017-01-0620162017-01-1710.1039/c5sm01922b