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>> We are using magnetic chains to move the micro object
from one place to another place just
by manipulating the magnetic field.
This whole process of capturing the object is totally reversible
because we did not use any kind of chemistry.
It is totally physical contact and no chemistry applies.
So we can move in some glass beads.
We can even move in some white blood cells
or red blood cells or anything we want.
We make these magnetic chains
out of single magnetic particles.
The advantage of this technology is
that we just need a relatively weak magnetic field.
Several milli-tesla,
that's generally a magnetic field strength generated
by magnetic coils commonly used in the laboratory.
Generally, the particle can move can be from several microns
to something like 20 microns or 30 microns.
I think this has lots of different kinds of applications.
One thing we can think of is drug delivery,
where we can specifically deliver the drug
to the cancer cell and in that way we can achieve targeting.
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The first author is me, Tao Yang, supervised by my advisors,
Dr. David Marr and Dr. Ning Wu
and the coauthors include another professor, Keith Neeves
at our school and also a former post-doc
at our school Onur Tasci, who is now at Harvard Medical School
at the Colorado School of Mines under the NASA Project.