One of the coolest things I saw on
television as a kid was a samurai
slicing a drop of water as it falls
through the air. It was awesome. But
slicing water is not an easy task, try
carving out a piece, the water parts
momentarily and then reattaches. Well
here comes science with a little help, a
super hydrophobic knife.
watch video here
This video filmed by a team led by
Ryan Yanashima from the department of
chemistry and biochemistry at Arizona
State University shows a drop of water
resting on a Teflon surface being sliced
in to two with a knife. And its quite a
site.
The knife is one of many constructed by
the team at Arizona State in their
endeavour to separate proteins from
the biological fluids they are found in.
The knives were constructed from
polyethylene, a polymer used in plastic
bags, from zinc and copper and were
dipped in a solution of silver nitrate
and a chemical called HDFT for 20
seconds. The result was a super
hydrophobic surface.
television as a kid was a samurai
slicing a drop of water as it falls
through the air. It was awesome. But
slicing water is not an easy task, try
carving out a piece, the water parts
momentarily and then reattaches. Well
here comes science with a little help, a
super hydrophobic knife.
watch video here
This video filmed by a team led by
Ryan Yanashima from the department of
chemistry and biochemistry at Arizona
State University shows a drop of water
resting on a Teflon surface being sliced
in to two with a knife. And its quite a
site.
The knife is one of many constructed by
the team at Arizona State in their
endeavour to separate proteins from
the biological fluids they are found in.
The knives were constructed from
polyethylene, a polymer used in plastic
bags, from zinc and copper and were
dipped in a solution of silver nitrate
and a chemical called HDFT for 20
seconds. The result was a super
hydrophobic surface.
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