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Systems and methods for creation of conducting networks of magnetic particles through dynamic self-assembly process

Patent ·
OSTI ID:1013023
 [1];  [2];  [3]
  1. Woodridge, IL
  2. Darien, IL
  3. Downers Grove, IL
+ Show Author Affiliations

Self-assembly of magnetic microparticles in AC magnetic fields. Excitation of the system by an AC magnetic field provides a variety of patterns that can be controlled by adjusting the frequency and the amplitude of the field. At low particle densities the low-frequency magnetic excitation favors cluster phase formation, while high frequency excitation favors chains and netlike structures. For denser configurations, an abrupt transition to the network phase was obtained.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
Assignee:
UCHICAGO ARGONNE, LLC (Chicago, IL)
Patent Number(s):
7,875,187
Application Number:
11/641,337
OSTI ID:
1013023
Country of Publication:
United States
Language:
English

References (3)

Surface Wave Assisted Self-Assembly of Multidomain Magnetic Structures journal February 2006
Dynamic self-assembly of magnetic particles on the fluid interface: Surface-wave-mediated effective magnetic exchange journal April 2006
Structure Formation in Electromagnetically Driven Granular Media journal March 2005

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36 MATERIALS SCIENCE