Fwd: new materials
mahnaz at stanford.edu
Mon Sep 26 13:44:46 PDT 2011
I have to apologize as well, I do not recall your email at all.
Please let us know what is your plan? Mary pretty much explained it all.
You need to sign up for a safety class/tour and then after one more
class called " all litho", you will be qualified to get train on Laurell
So let us know of your plan
On 9/26/2011 12:06 PM, Mary Tang wrote:
> Hi Mark --
> My sincere apologies. I usually handle nanoparticle requests, but
> must have completely missed your previous email, so you haven't heard
> from us.
> We don't generally allow nanoparticle solutions into the cleanroom or
> cleanroom processing tools though there are a few exceptions. For
> spin coating, we don't allow silica nanoparticle solutions in the
> cleanroom tools because it is remarkably difficult to keep them clean
> and avoid have them redeposit on other peoples' substrates.
> So, for what you describe here, we have a spin coater located outside
> the lab, in the "wafersaw" room. It is not really clean by
> microcontamination standards, but it is ventilated and the air is
> filtered. Mahnaz Mansourpour trains on this system. It's a nice,
> manual, Laurell coater (better and newer than the general spinner
> inside the lab.)
> By the way, are you trying to create a monolayer of silica particles?
> If so, you should make sure to get surface-modified beads -- either
> all with carboxylate (negative) or amine (positive) chemical groups.
> The charge really helps a lot in distributing particles and prevents
> their clumping. Unless you already have a protocol of your own, I may
> be able to dig up a couple from people who have done it here.
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