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zrski
zrski
Ik vind dit echt uitermate gaaf... Ik denk dat het I.E. forum de beste plek is om dit succesvolle experiment te plaatsen.
De content komt van de nieuwsbrief "the harrow technology report"
MEMS At Work.
No, this isn't a misspelled exposi of that famous Australian band
(http://www.legacyrecordings.com/menatwork/), nor is the first picture
(below) very good (since it was captured from a live video feed -
(http://mems.sandia.gov/scripts/memscam.asp). But you might excuse the
picture quality when you realize that the fuzzy objects are a WORKING
gear train (a small gear in the upper-right, meshing with a much larger
gear below it) running on nothing but electrostatic force, and whose
teeth are each the size of a single red blood cell!!
[image - http://mems.sandia.gov/scripts/memscam.asp]
This comparative "still" photomicrograph of just the upper "small gear"
makes things all too clear:
[image - http://mems.sandia.gov/scripts/index.asp]
"Imagine a machine so small that it is imperceptible to the human
eye. Imagine working machines with gears no bigger than a grain of
pollen. Imagine these machines being batch fabricated tens of
thousands at a time, at a cost of only a few pennies each. Imagine
a realm where the world of design is turned upside down, and the
seemingly impossible suddenly becomes easy. A place where gravity
and inertia are no longer important, but the effects of atomic
forces and surface science dominate. Welcome to the microdomain, a
world now occupied by an explosive new technology known as MEMS
(MicroElectroMechanical Systems) or, more simply, micromachines."
Years-old quote from Sandia National Labs,
http://www.sandia.gov/mstc/technologies/micromachines/vision.html .
Well, imagine no more! Because as described in a Sandia National Labs
demonstration of their latest technology, these pictures have captured
the soul of a working "microengine" whose components are so light (and
hence have so little inertia) that they can spin at over a half-million
RPM! (You can watch it work, LIVE, in the video stream at -
http://mems.sandia.gov/scripts/memscam.asp .)
Oh -- and these gears have demonstrated an endurance record of over 7
Billion revolutions! (This is the equivalent of your car engine taking
five round trips -- to the moon.)
Is there a practical application for this micromotor? Perhaps not yet.
But "yet" is the operative word, since most initial laboratory
prototypes simply prove a point, which then leads to practical
inventions. And considering that elements of this machine are at the
scale of living human cells, I suspect that the convergence of NBIC
(Nanotechnology, Biology & medicine, Information sciences, and Cognitive
sciences) might be very interesting, indeed. (For example, I wonder if
doctors might be interested in a machine to filter blood at the cellular
level, or perhaps to PUMP blood cells around, or...)
Again, Don't Blink!
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Het vermelden van de signup URL van deze nieuwsbrief vind ik eigenlijk wel de moeite waard... Dus hier is die: http://www.theharrowgroup.com/signup.asp
HL-er van het eerste uur (& proud of it)
follow me on twitter http://www.twitter.com/dhettema
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