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Title: Driving self-assembly and emergent dynamics in colloidal suspensions by time-dependent magnetic fields

In this review we discuss recent research on driving self assembly of magnetic particle suspensions subjected to alternating magnetic fields. The variety of structures and effects that can be induced in such systems is remarkably broad due to the large number of variables involved. The alternating field can be uniaxial, biaxial or triaxial, the particles can be spherical or anisometric, and the suspension can be dispersed throughout a volume or confined to a soft interface. In the simplest case the field drives the static or quasi-static assembly of unusual particle structures, such as sheets, networks and open-cell foams. More complex, emergent collective behaviors evolve in systems that can follow the time-dependent field vector. In these cases energy is continuously injected into the system and striking °ow patterns and structures can arise. In fluid volumes these include the formation of advection and vortex lattices. At air-liquid and liquid-liquid interfaces striking dynamic particle assemblies emerge due to the particle-mediated coupling of the applied field to surface excitations. These out-of-equilibrium interface assemblies exhibit a number of remarkable phenomena, including self-propulsion and surface mixing. In addition to discussing various methods of driven self assembly in magnetic suspensions, some of the remarkable properties of thesemore » novel materials are described.« less
Authors:
 [1] ;  [2]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Report Number(s):
SAND-2013-2161J
Journal ID: ISSN 0034-4885; 597051
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Reports on Progress in Physics
Additional Journal Information:
Journal Volume: 76; Journal Issue: 12; Journal ID: ISSN 0034-4885
Publisher:
IOP Publishing
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE
OSTI Identifier:
1344461

Martin, James E., and Snezhko, Alexey. Driving self-assembly and emergent dynamics in colloidal suspensions by time-dependent magnetic fields. United States: N. p., Web. doi:10.1088/0034-4885/76/12/126601.
Martin, James E., & Snezhko, Alexey. Driving self-assembly and emergent dynamics in colloidal suspensions by time-dependent magnetic fields. United States. doi:10.1088/0034-4885/76/12/126601.
Martin, James E., and Snezhko, Alexey. 2013. "Driving self-assembly and emergent dynamics in colloidal suspensions by time-dependent magnetic fields". United States. doi:10.1088/0034-4885/76/12/126601. https://www.osti.gov/servlets/purl/1344461.
@article{osti_1344461,
title = {Driving self-assembly and emergent dynamics in colloidal suspensions by time-dependent magnetic fields},
author = {Martin, James E. and Snezhko, Alexey},
abstractNote = {In this review we discuss recent research on driving self assembly of magnetic particle suspensions subjected to alternating magnetic fields. The variety of structures and effects that can be induced in such systems is remarkably broad due to the large number of variables involved. The alternating field can be uniaxial, biaxial or triaxial, the particles can be spherical or anisometric, and the suspension can be dispersed throughout a volume or confined to a soft interface. In the simplest case the field drives the static or quasi-static assembly of unusual particle structures, such as sheets, networks and open-cell foams. More complex, emergent collective behaviors evolve in systems that can follow the time-dependent field vector. In these cases energy is continuously injected into the system and striking °ow patterns and structures can arise. In fluid volumes these include the formation of advection and vortex lattices. At air-liquid and liquid-liquid interfaces striking dynamic particle assemblies emerge due to the particle-mediated coupling of the applied field to surface excitations. These out-of-equilibrium interface assemblies exhibit a number of remarkable phenomena, including self-propulsion and surface mixing. In addition to discussing various methods of driven self assembly in magnetic suspensions, some of the remarkable properties of these novel materials are described.},
doi = {10.1088/0034-4885/76/12/126601},
journal = {Reports on Progress in Physics},
number = 12,
volume = 76,
place = {United States},
year = {2013},
month = {11}
}