moose sniffer
Harmless
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Registered: 24-7-2005
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electrostatic " Chucks "
I have been told that there are electrostatic " Chucks " that are used to affix silicon wafers without
face contact in semiconductor manufacturing.
It has two parallel serpetine conductors embedded in a silicone or other insulaters
that is charged with high voltage which acts like an electrostatic analog of a
megnet.
Thus these two fields act to attract things that are even electricaly conductive,
but are not magnetic.
I feel like a retards, because i dont get how this works. can somebody enlighten me?
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12AX7
Post Harlot
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Opposites attract, simple as that. The insulator keeps the charges from countering.
To do it, you have to prevent induction so you can't just place the disc on the platten and charge it, or charge it then bring the disc near; you
need to ground the plate while charging. So it's not hands free...
Any dielectric will work, higher breakdown voltage the better (more electric field, proportional to force!).
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Twospoons
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The same trick was used on the old pen plotters, to hold the paper in place.
Helicopter: "helico" -> spiral, "pter" -> with wings
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Lambda
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A Laser printer or Photo copier, uses this principle to attract toner powder to the drum, before it is rolled out onto the paper sheet. The part of
this static electricity charged drum that is hit by the copied objects recoiled laser beam, loses all, or part of it's charge. The dark or grey
spots remain fully or partly charged, and thus attract the toner powder. The heater (oven) then bakes/melts (fixation process) this resin powder onto
the paper sheet.
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praseodym
Hazard to Others
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If i am not wrong, some car companies also make use of this method to spray paint on their cars...
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12AX7
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See powder coating.
Tim
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