A novel technique for the self-assembly of three-dimensional mesoscopic structures in a forced fluid flow by employing a magnetic field is described. There are advantages of using magnetic fields for this purpose: unlike many other forces, a magnetic force is effective even from a distance, permitting “action at a distance,” it is also localized, and competition between the magnetic force and fluid shear enables unique self-assembled ferrofluid structures. Herein, a simulation provides insight into the possibility of using magnetic field to assemble colloidal nanoparticles into aggregates. Subsequently, a demonstration experiment is conducted to characterize the development and decay of such aggregates. The analysis provides a basis for developing effective self-assembly techniques for various engineering applications.
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Research Article|
April 26 2005
A strategy for the assembly of three-dimensional mesoscopic structures using a ferrofluid
Ranjan Ganguly;
Ranjan Ganguly
a)
Mechanical and Industrial Engineering Department,
University of Illinois at Chicago
, Chicago, Illinois 60607
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Amit P. Gaind;
Amit P. Gaind
Mechanical and Industrial Engineering Department,
University of Illinois at Chicago
, Chicago, Illinois 60607
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Ishwar K. Puri
Ishwar K. Puri
b)
Department of Engineering Science and Mechanics,
Virginia Polytechnic Institute and State University
, Blacksburg, Virginia 24061
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Physics of Fluids 17, 057103 (2005)
Article history
Received:
August 21 2004
Accepted:
March 11 2005
Citation
Ranjan Ganguly, Amit P. Gaind, Ishwar K. Puri; A strategy for the assembly of three-dimensional mesoscopic structures using a ferrofluid. Physics of Fluids 1 May 2005; 17 (5): 057103. https://doi.org/10.1063/1.1899695
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