Madan,

Ellipsometry has been used for this application, although more common
tools for things of this height are AFM and STM. I believe I've also heard
of FTIR being a good tool. At least some of this should be available to
you, given the amount of bio-nano being done at Cornell.

For some thoughts on technique, check the extensive literature on
self-assembled monolayers of alkanethiols. Mrksich and Whitesides are two
of the major names in this subfield; Mrksich in particular has a few good
review articles.

Alik Widge
MEMS Laboratory
Carnegie Mellon University


On Wed, 6 Nov 2002 [email protected] wrote:

> From: "Madanagopal K.V." 
> Subject: [mems-talk] measuring thickness of thin organic layers
> Reply-To: [email protected]
>
> Hello,
> Has anyone measured thin organic layers on gold (or other metals)?  I am
> trying to measure ~40A thick films.  Would ellipsometry work?
> I would appreciate if anyone could suggest some references.
>
> Thanks
> Madan
>