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-----Selective Gold Deposition on a Chip
Selective Gold Deposition on a Chip
Q. Sir,
I have an array of metal deposts on the surface of a chip,which are of microscale. I want to selectively deposit beads of gold on those metal surfaces. Can you suggest me a way to do it.
Thank you
Tufts University - Medford, Massachusetts
2005
A. Some of your terms are a little vague, Vinay. You have an "array of metal deposits" but you don't say what metal, or in what condition, or how they got there or why. You want to deposit "beads" of gold, but I don't know if they means you want to stick some microscopic gold balls on them that you have available, or you just need to cover the metal with gold, or what. The easiest way to answer you is to note that gold is noble to almost all other metals and will immersion deposit onto them from a gold plating solution. But I don't know if that's any help.
If you do want "beads", you could probably gold plate the surface then "cold weld" the beads. Good luck.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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2005
A. Vinay,
Try brush plating.
Good luck
T.K. Mohan
plating process supplier - Mumbai, India
2005
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