[mems-talk] Critical Dry

[Robert Bock]

Water is miscible in Acetone, from 0 to 100%...  I believe you didn't mean
to type in 'not.'

Certainly the differences between diffusion/evaporation rates for Acetone
and water are most likely the driving factors here; process conditions
should be adjusted to address this.

Robert Bock
G3 Mastering Solutions Inc.

> -----Original Message-----
> From: mems-talk-bounces at memsnet.org 
> [mailto:mems-talk-bounces at memsnet.org] On Behalf Of Jack Mulligan
> Sent: Tuesday, July 01, 2008 10:51 AM
> To: 'General MEMS discussion'
> Subject: Re: [mems-talk] Critical Dry
> 
> Rama -
> 
> Since water is not miscible in acetone what is most likely 
> happening inside what I assume is an atmospheric dryer is the 
> acetone vapor is leaving the surfaces at a much faster rate 
> leaving the water behind on the surfaces to evaporative dry 
> which leaves watermarks or spots which can cause striation problems.
> 
> We have a solution for this using our proprietary vacuum 
> process. Feel free to write me for more information. I am 
> careful not to put too much information in an email that 
> might be seen as using the discussion board for commercial purposes.