DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method of driving liquid flow at or near the free surface using magnetic microparticles

Abstract

The present invention provides a method of driving liquid flow at or near a free surface using self-assembled structures composed of magnetic particles subjected to an external AC magnetic field. A plurality of magnetic particles are supported at or near a free surface of liquid by surface tension or buoyancy force. An AC magnetic field traverses the free surface and dipole-dipole interaction between particles produces in self-assembled snake structures which oscillate at the frequency of the traverse AC magnetic field. The snake structures independently move across the free surface and may merge with other snake structures or break up and coalesce into additional snake structures experiencing independent movement across the liquid surface. During this process, the snake structures produce asymmetric flow vortices across substantially the entirety of the free surface, effectuating liquid flow across the free surface.

Inventors:
 [1];  [2];  [3];  [1]
  1. Woodridge, IL
  2. Darien, IL
  3. Evanston, IL
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1029262
Patent Number(s):
8034245
Application Number:
12/174,781
Assignee:
The United States of America as represented by the United States Department of Energy (Washington, DC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03C - MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Snezhko, Oleksiy, Aronson, Igor, Kwok, Wai-Kwong, and Belkin, Maxim V. Method of driving liquid flow at or near the free surface using magnetic microparticles. United States: N. p., 2011. Web.
Snezhko, Oleksiy, Aronson, Igor, Kwok, Wai-Kwong, & Belkin, Maxim V. Method of driving liquid flow at or near the free surface using magnetic microparticles. United States.
Snezhko, Oleksiy, Aronson, Igor, Kwok, Wai-Kwong, and Belkin, Maxim V. Tue . "Method of driving liquid flow at or near the free surface using magnetic microparticles". United States. https://www.osti.gov/servlets/purl/1029262.
@article{osti_1029262,
title = {Method of driving liquid flow at or near the free surface using magnetic microparticles},
author = {Snezhko, Oleksiy and Aronson, Igor and Kwok, Wai-Kwong and Belkin, Maxim V},
abstractNote = {The present invention provides a method of driving liquid flow at or near a free surface using self-assembled structures composed of magnetic particles subjected to an external AC magnetic field. A plurality of magnetic particles are supported at or near a free surface of liquid by surface tension or buoyancy force. An AC magnetic field traverses the free surface and dipole-dipole interaction between particles produces in self-assembled snake structures which oscillate at the frequency of the traverse AC magnetic field. The snake structures independently move across the free surface and may merge with other snake structures or break up and coalesce into additional snake structures experiencing independent movement across the liquid surface. During this process, the snake structures produce asymmetric flow vortices across substantially the entirety of the free surface, effectuating liquid flow across the free surface.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {10}
}

Works referenced in this record:

Surface Wave Assisted Self-Assembly of Multidomain Magnetic Structures
journal, February 2006