Letter 3007

Metal coating on fibers 

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We have recently began a project involving metal coating on fibers . I would be very grateful if someone can inform me about the possibility of preparing thin metal coating (0.1-0.3 microns) on fibers (glass or polymer) that are few microns (up to 25m) in diameter. Yours Sincerely

Dr. Yoram Sorek Dept. of Environmental Physics Israel Institute for Biological Research P. O. Box 19 74100 Ness Ziona Israel

Yoram Sorek
Israel Institute for Biological Research - Ness-Ziona, Israel

Metal films are easily deposited on glass by either thermal evaporation or sputtering. How long are your fibers? Are they individual fibers, or reels? A mechanism could be set up to rotate the fiber in the deposition zone, so that the metal is deposited completely around the fiber.

Joe Ketterl
- Issaquah, Washington

Your question about coating metal on fibres:

Have you investigated the feasibility of using a Chemical Vapour Deposition process? We speciaize in CVD, especially vapour deposition of nickel and nickel alloys, but other metals are possible too.

Coating fibres and powders is quite practical also.

Mick O'Meara
- Toronto, Canada

You may want to look into electroless plating of Nickel and Gold immersion. I have been plating fibers of 125 to 160 micron thickness for the past 2 years using agents to activate the surface of the glass fibers first. The Nickel thickness comes out to around 4 microns and the Gold to around .2 microns.

Brian N Olmstead
- Portland, CT, USA

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