Chan Ho Yin,
I think your problem needs a little more description. First, is your
device a platinum cantilever beam directly deposited on a silicon
substrate, with no other layers?
Second, it reads as if you are sticking two probes (of unknown
material) on to a platinum wire, with nothing else between them. There is
no mention of what kind of atmosphere they have been placed in. But,
electroysis makes me think of water. So, what are the probes made of, what
kind of circuit do they form, and are they in air, water, or something
else?

If it turns out you have naked wires in water, then you'll definitely have
electrolysis, even at relatively low voltages.

Jesse Fowler
  UCLA/MAE Dept., 420 Westwood Plaza, Room 37-129, ENGR IV
  Los Angeles, CA 90095-1597 | (310)825-3977
"Battery is safe if not provoked." -- _Batteries in a Portable World_
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On Sat, 27 Apr 2002, Chan Ho Yin wrote:

> Hi all,
>
>     I have deposited Pt onto Si substrate and make Pt into a line. When I
> applied DC voltage to its two ends by micro probes, I found that there are
> many bubbles come out from the contact point between the probes and Pt
> layer.  I guess it dues to electrolysis. I also applied AC to it.. But
> still many bubbles...
>
>    What is the problem??  Can I reduce the bubbles or stop the bubbles
> generated??  Can you suggest me some methods??????????
>
>   By the way, the structure is a cantilever beam.  (2 layers).
>
> Thank you.
>
> Yours,
> Hoyin
>
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