Emergence of reconfigurable wires and spinners via dynamic self-assembly
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Author
Kokot, Gasper
Piet, David
Aranson, Igor S.
Snezhko, Alexey
Published Version
https://doi.org/10.1038/srep09528Metadata
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Kokot, Gasper, David Piet, George M. Whitesides, Igor S. Aranson, and Alexey Snezhko. 2015. “Emergence of reconfigurable wires and spinners via dynamic self-assembly.” Scientific Reports 5 (1): 9528. doi:10.1038/srep09528. http://dx.doi.org/10.1038/srep09528.Abstract
Dissipative colloidal materials use energy to generate and maintain structural complexity. The energy injection rate, and properties of the environment are important control parameters that influence the outcome of dynamic self-assembly. Here we demonstrate that dispersions of magnetic microparticles confined at the air-liquid interface, and energized by a uniaxial in-plane alternating magnetic field, self-assemble into a variety of structures that range from pulsating clusters and single-particle-thick wires to dynamic arrays of spinners (self-assembled short chains) rotating in either direction. The spinners emerge via spontaneous breaking of the uniaxial symmetry of the energizing magnetic field. Demonstration of the formation and disaggregation of particle assemblies suggests strategies to form new meso-scale structures with the potential to perform functions such as mixing and sensing.Other Sources
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4374141/pdf/Terms of Use
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