From nlatta at stanford.edu  Tue Jul 19 16:03:46 2011
From: nlatta at stanford.edu (Nancy Latta)
Date: Tue, 19 Jul 2011 16:03:46 -0700
Subject: Reservation on 22 July 1:00-6:00pm
Message-ID: <4E260D52.90605@stanford.edu>

Folks,

Uli and I have reserved the wet bench on Fri 22 July from 1-6:00 pm to 
continue testing of the 5:1:1 H2O:NH4OH:H2O2.  Please adjust your use of 
the wetbench accordingly.  We will not be able to accommodate other 
users at the bench during that time.

-Nancy


From nlatta at stanford.edu  Fri Jul 22 17:03:33 2011
From: nlatta at stanford.edu (Nancy Latta)
Date: Fri, 22 Jul 2011 17:03:33 -0700
Subject: Organic Clean Changed
Message-ID: <4E2A0FD5.1040306@stanford.edu>

Dear Wbsilicide Users,

Please be advised that the organic clean bath (4:1 sulfuric peroxide) 
has been permanently changed to 5:1:1 H2O:H2O2;NH4OH.
The bath must be changed every four hours and the addition of H2O2 is 
allowed, much the same as the 5:1:1 H2O;H2O2:HCl bath.  The bath 
temperature is 50C and the time remains 10 minutes.

There are several very good reasons for the change; 1) safety, 2) better 
quality clean, 3) sulfur contamination of nanowires and  4) lower 
chemical costs and on-site inventory.

Look for the forthcoming white paper on the wiki.  It will include 
references and results of our tests.

Please direct any questions or concerns to SNF staff members.