Manipulation of particles in liquid media
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United States of America Patent
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Aug 30, 2005
Grant Date -
N/A
app pub date -
Jul 20, 2000
filing date -
Jul 20, 1999
priority date (Note) -
Expired
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Abstract
In a method of manipulating particles suspended in a liquid medium, a moving standing wave ultrasonic vibration and an electrical field capable of generating a dielectrophoretic force on the particles are applied. The ultrasonic vibration may be applied to move the particles from a first suspending liquid to a second suspending liquid, or to move the particles into proximity with electrodes to apply the dielectrophoretic force, or to move the particles into the center of the liquid medium. Alternatively, the ultrasonic vibration and the electrical field may be applied simultaneously.
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