Journal
SOFT MATTER
Volume 12, Issue 5, Pages 1517-1524Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5sm01922b
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Funding
- Austrian Science Fund (FWF) [J 3106-N16]
- Center for High Performance Computing at the University of Utah
- NSF [CHE-1048789]
- US Department of Energy (US DOE), Division of Materials Sciences and Engineering [DE-FG02-00ER45852]
- U.S. Department of Energy, Office of Basic Energy Sciences, through the Chemical Sciences Division (CSD) of the Lawrence Berkeley National Laboratory (LBNL) [DE-AC02-05CH11231]
- U.S. Department of Energy (DOE) [DE-FG02-00ER45852] Funding Source: U.S. Department of Energy (DOE)
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Demixing 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 particle species, the structures formed by a second, undriven species can range from compact clusters to elongated, string-like patterns.
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