How about a FIB?
Bev
-----Original Message-----
From: Inge [mailto:[log in to unmask]]
Sent: Friday, May 29, 2009 12:08 PM
To: Bev Christian; TechNet E-Mail Forum
Subject: Re: [TN] WAX
Thanks, Bev, at least some thoughts, but I don't think XPR and Auger
will
give thickness.What do you know about AFM?
Inge
----- Original Message -----
From: "Bev Christian" <[log in to unmask]>
To: "TechNet E-Mail Forum" <[log in to unmask]>; "Inge"
<[log in to unmask]>
Sent: Friday, May 29, 2009 5:56 PM
Subject: RE: [TN] WAX
Inge,
Nope I haven't. But, Joyce, who is at ECTC right now, may be able to
shed some light on this from her time at Microbonds, where their main
patent deals with putting a coating on gold bond wires that allows them
to touch without shorting out.
On a shiny surface like that you MIGHT be able to determine
presence/absence by FTIR, but maybe not because of the thin nature of
the film. Certainly we have not been able to confirm the presence of
material in water spots on gold surfaces.
Two techniques that come to mine to try and Auger and/or XPS, but I am
not even a novice in either technique. Both are very expensive.
Regards,
Bev
RIM
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge
Sent: Friday, May 29, 2009 10:34 AM
To: [log in to unmask]
Subject: [TN] WAX
Hi all and even Bev,
Assume that you polish a metal, in my case five 9s Ag. Polishes have at
least two purposes. Grind the metal to get a certain level of brightness
(we
polish to Ra 30 nanometers). And leave a thin coating that protects the
metal. Now, in our case, what is left is so thin, that you can't observe
the
'coating'. Presumably because it's an organic compound of some sort,
and
also because it's transparent for our eye's wavelength. Now comes the
question: has anyone out there ever investigated such a 'wax' and
determined the thickness, and if so, what kind of equipment was used?
That's why I more or less directed the q to Bev...
Inge
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