new chemical: silver nitrate in water

Mary Tang mtang at
Thu Jan 12 17:50:55 PST 2006

Hi Alex --

Could you provide an MSDS for the solution you plan to use?  It would be 
helpful for our records if you have an electronic version, as we are 
building our electronic database.  Also, exactly how do you plan to 
setup your system at this bench?  I'm afraid I'm having a little 
difficulty envisioning how this will be setup at the CTB.  And I'm 
curious as to why an autoclave was used (I wonder if it's because 
temperature control of teflon labware is difficult or if pressure was 
required to prevent evaporation, as you probably couldn't use an 
ordinary reflux unit...)  Do you end up with silver onto everything?  
(If so, it would be nice if you could provide your own labware.)



Alex Guichard wrote:

> Name: Alex Guichard
> Coral login: arguicha
> ph#: 3-6352
> PI: Mark Brongersma
> Chemical: Silver Nitrate (AgNO3), aqueous solution (less than 1M)
> Vendor: VWR,
> Reason for request: Chemical fabrication of dense Si nanowire arrays  
> (see attached .pdf paper)
> Process Flow: cleaning of virgin, uncontaminated prime wafers at  
> wbdiff (AgNO3 will not be brought to wbdiff), chemical processing  
> with AgNO3 (mixed with ~20ml of 49%HF) carried out at wbgeneral-ctb  
> (for temperature control) for roughly 1 hour.
> Amount: ~ 200ml, liquid
> Storage: Chemical will not be stored at SNF
> Disposal: chemical will be disposed of into waste bottles and  
> labelled with proper tag.  Waste bottle will be put in waste area in  
> chemical pass-through
> Please let me know if you need any additional information.
> Sincerely,
> Alex
> Alex R. Guichard
> Ph.D Candidate
> Dept. of Mat. Sci. and Eng.
> Stanford University
> (m)919-434-6906  (h)650-968-1575
> (l)650-723-6352

Mary X. Tang, Ph.D.
Stanford Nanofabrication Facility
CIS Room 136, Mail Code 4070
Stanford, CA  94305
mtang at

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