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Isn't this just capillary
action?
Performance increase with decrease in
ID...
Perhaps on the nanoscale the effect
is amplified by the extreme _expression_ of the mechanics
involved?
-john
Grimer wrote..
.....the water in the nanotubes
is in a high state of tension, at a high
pF to use the
scientific term. Therefore in putting water into the
tubes
the viscosity will seem to be negative since the
water will be falling down
a pressure gradient and be
"sucked in" to the material. There is a nice
hysteresis
curve on page 301 of SMFRE which I will scan in
later.
This apparent negative viscosity probably partly
explains
Jason Holt's statement, "As you shrink the pore
size, there is a huge
enhancement in flow rate."
"It's something that is quite
counter-intuitive," says
LLNL chemical engineer Jason Holt, whose findings
appeared in the 19 May issue of Science.
The trouble with science is
that it is partitioned
into ever smaller pieces and people working in one
discipline have very little idea of what has already
been discovered
yonks ago in another. One of the
advantages of multi-disciplinary discussion
groups <grin> how about much suffering
Frank ?
like this one is that it enables one to bridge those
gaps -
albeit with not a little suffering. <g>
Now the beauty of
nano-tubes viewed as clay minerals
is that there ain't nothing like them in
nature - but
if there are
Howdu Frank.. Cone shape converging nozzles can form vortexes that can
explain the acceleration in flowrate together with what you describe. Takes "
two to tango".
Richard
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