Emergence of reconfigurable wires and spinners via dynamic self-assembly

Gasper Kokot, David Piet, George M. Whitesides, Igor S. Aranson, Alexey Snezhko

Research output: Contribution to journalArticle

25 Citations (Scopus)

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.

Original languageEnglish (US)
Article number9528
JournalScientific reports
Volume5
DOIs
StatePublished - 2015

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spinners
self assembly
wire
liquid air
microparticles
magnetic fields
assemblies
injection
energy
symmetry

All Science Journal Classification (ASJC) codes

  • General

Cite this

Kokot, Gasper ; Piet, David ; Whitesides, George M. ; Aranson, Igor S. ; Snezhko, Alexey. / Emergence of reconfigurable wires and spinners via dynamic self-assembly. In: Scientific reports. 2015 ; Vol. 5.
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Emergence of reconfigurable wires and spinners via dynamic self-assembly. / Kokot, Gasper; Piet, David; Whitesides, George M.; Aranson, Igor S.; Snezhko, Alexey.

In: Scientific reports, Vol. 5, 9528, 2015.

Research output: Contribution to journalArticle

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