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Topic: transparent paint carrier of electrical current  (Read 7884 times)

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Offline tohu

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transparent paint carrier of electrical current
« on: June 20, 2012, 04:50:55 PM »
Hello ...
Please , I want a transparent  paint  for a glass or plastic  that carrier of electrical current. If it is existing  in market ( what is the brand name) or there is a way to be manufactured by local materials available.

Another question ...
Is there a dry metal compound (powder) that is transparent and transmission of electrical current and available?

Offline Stepan

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Re: transparent paint carrier of electrical current
« Reply #1 on: June 20, 2012, 09:15:34 PM »
You can make glass surface conductive by applying a film of Tin Oxide. I did it years ago, but do nor remember how, only remember that on the last stage we heated surface at 400C. 

Offline Enthalpy

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Re: transparent paint carrier of electrical current
« Reply #2 on: June 21, 2012, 04:25:49 PM »
Ti oxide doped with indium (so-called ITO) is the standard method, maybe by sputtering - I did such things almost 30 years ago, during the archaeotechnology era, when grooves were made with flintstone and implantation by blowpipe, so apparatus must have changed a bit meanwhile.

You could replace or complement it with a mesh of metallic electrodes. If they're narrow and close enough, you won't even see them.

Offline zoork34

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Re: transparent paint carrier of electrical current
« Reply #3 on: July 26, 2012, 02:11:16 PM »
Ti oxide doped with indium (so-called ITO) is the standard method, maybe by sputtering - I did such things almost 30 years ago, during the archaeotechnology era, when grooves were made with flintstone and implantation by blowpipe, so apparatus must have changed a bit meanwhile.

You could replace or complement it with a mesh of metallic electrodes. If they're narrow and close enough, you won't even see them.

ITO is still the standard starting point today if you need a transparent, conductive surface. 

As to the powder, you can buy ITO in a powder form that should work.  It's expensive, but there aren't a lot of good options except for extremely thin sheets of nanotubes/graphene.   

Offline Enthalpy

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Re: transparent paint carrier of electrical current
« Reply #4 on: August 08, 2012, 01:34:36 PM »
Many research groups have produced conductive plastics. Did they make a paint of them?

Offline curiouscat

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Re: transparent paint carrier of electrical current
« Reply #5 on: October 07, 2012, 09:32:09 AM »
What are the applications? Just curious.

Offline Enthalpy

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Re: transparent paint carrier of electrical current
« Reply #6 on: October 07, 2012, 05:49:10 PM »
I can't answer for Tohu, but in general, it has much to do with displays, beginning with LCD.
The present ado about transparent conductors must be connected with touch screens and Windows 8.

Other uses: glass and mirrors that opacify electrically at strong light, especially welding helmets and car mirrors, plus protection against blinding lasers for helicopter pilots, in the future house windows.

From time to time, antistatic coating. Shipping bags for electronic components and cards...

Though, in nearly all uses, a very fine mesh of metal electrodes replaces a film. Surface conduction makes the last few µm. Easier.

Offline curiouscat

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Re: transparent paint carrier of electrical current
« Reply #7 on: October 07, 2012, 11:47:20 PM »
@Enthalpy Thank you!

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