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18 changes: 9 additions & 9 deletions doc/FerrofluidPump.tex
Original file line number Diff line number Diff line change
Expand Up @@ -101,9 +101,9 @@ \section{Related Research}

\section{The Idea}

There is no known way to directly move a mass of ferrfluid which is immersed in
There is no known way to directly move a mass of ferrofluid which is immersed in
ferrofluid.
The idea of moving a ferrofluid plug or bolus which is bouneded by air or water
The idea of moving a ferrofluid plug or bolus which is bounded by air or water
via electromagnets turned on or off is well known. A slight inversion of this
idea is to use two boluses to trap a blob of water. The water thus remains
a separator. In the diagrams below it is represented as a ``W'',
Expand All @@ -121,7 +121,7 @@ \section{The Idea}
If we reduce this to a minimal configuration, we have a circle of seven regions
of equal size. The inlet and the outlet prevent the water blobs from escaping by
having permanent magnets in place. The water blobs can never displace these
locks, represented by ``L'' in our diaggram. The inlet of the pump has an
locks, represented by ``L'' in our diagram. The inlet of the pump has an
inexhaustible supply of ferrofluid represented as a source (``S''). The
outlet is represented as a drain ``D''.

Expand All @@ -148,21 +148,21 @@ \section{The Idea}

\section{A Simple Test Apparatus}

It is easy to source permanent magnets and difficult to source electomagnets with
the precise shapes neede for this project.
It is easy to source permanent magnets and difficult to source electromagnets with
the precise shapes needed for this project.
A test apparatus using only permanent magnets moved by hand to match the 4-stroke cylce
of the pump should allow us to test the hypothesis that this pump will work and measure
flow on a per-cycle basis.
This approach will postpone the need to develop the electromanets.
This approach will postpone the need to develop the electromagnets.

We therefore propose to make 3D printed apparatus that has cages for permanent magnets
which can be moved into the pump ring and out of the pump ring to simulated turning
an elctromagnet on and off.
an electromagnet on and off.
These cages are necessary because strong permanent magnets tend to want to fly into
each other and must be carefully constrained.
We believe we can furthermore make handles which we can glue to the magnets with
hot-melt glue to make the motion of the magnets easier to effect.
We suspect that the magnest will stay in place when in the ring,
We suspect that the magnet will stay in place when in the ring,
and have to held when out of the ring, which may require three hands or
some dextrous holding.

Expand All @@ -177,7 +177,7 @@ \section{Motivation}

Lawrence Kincheloe suggested this approach:

Ferro fluids could be used for vein massages and pumping by direct injection into the veins. This is predicated on a biocompatible ferro fluid where the lipid shell and nano scale ferride can be adsorbed by the body and act like an iron supplement. The direction of an external magnetic field will direct the ferro fluid to a particular location and could allow for mechanical agitation, and a pumping action using a rhythmic compression and expansion of plasma displacement within the veins.
Ferro fluids could be used for vein massages and pumping by direct injection into the veins. This is predicated on a biocompatible ferro fluid where the lipid shell and nano scale ferride can be absorbed by the body and act like an iron supplement. The direction of an external magnetic field will direct the ferro fluid to a particular location and could allow for mechanical agitation, and a pumping action using a rhythmic compression and expansion of plasma displacement within the veins.

\section{Conclusions}

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