Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 150, Issue 9, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.5079861
Keywords
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Funding
- ERC Starting Grant ComplexSwimmers [677511]
- Vetenskapsradet [2016-03523]
- German Research Foundation DFG [LO 418-19-1]
- Swedish Research Council [2016-03523] Funding Source: Swedish Research Council
- European Research Council (ERC) [677511] Funding Source: European Research Council (ERC)
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Thanks to a constant energy input, active matter can self-assemble into phases with complex architectures and functionalities such as living clusters that dynamically form, reshape, and break-up, which are forbidden in equilibrium materials by the entropy maximization (or free energy minimization) principle. The challenge to control this active self-assembly has evoked widespread efforts typically hinging on engineering of the properties of individual motile constituents. Here, we provide a different route, where activity occurs as an emergent phenomenon only when individual building blocks bind together in a way that we control by laser light. Using experiments and simulations of two species of immotile microspheres, we exemplify this route by creating active molecules featuring a complex array of behaviors, becoming migrators, spinners, and rotators. The possibility to control the dynamics of active self-assembly via light-controllable nonreciprocal interactions will inspire new approaches to understand living matter and to design active materials. Published under license by AIP Publishing.
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