WEBVTT

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[ Music ]

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>> We are using magnetic
chains to move the micro object

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from one place to
another place just

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by manipulating the
magnetic field.

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This whole process of capturing
the object is totally reversible

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because we did not use
any kind of chemistry.

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It is totally physical contact
and no chemistry applies.

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So we can move in
some glass beads.

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We can even move in
some white blood cells

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or red blood cells
or anything we want.

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We make these magnetic chains

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out of single magnetic
particles.

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The advantage of
this technology is

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that we just need a
relatively weak magnetic field.

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Several milli-tesla,

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that's generally a magnetic
field strength generated

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by magnetic coils commonly
used in the laboratory.

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Generally, the particle can
move can be from several microns

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to something like 20
microns or 30 microns.

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I think this has lots of
different kinds of applications.

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One thing we can think
of is drug delivery,

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where we can specifically
deliver the drug

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to the cancer cell and in that
way we can achieve targeting.

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[ Silence ]

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The first author is me, Tao
Yang, supervised by my advisors,

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Dr. David Marr and Dr. Ning Wu

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and the coauthors include
another professor, Keith Neeves

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at our school and
also a former post-doc

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at our school Onur Tasci, who
is now at Harvard Medical School

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at the Colorado School of
Mines under the NASA Project.