Carbon nanotube suspension in dichlorobenzene

Ed Myers edmyers at
Mon Aug 14 15:54:26 PDT 2006

I talked with Gael this afternoon.  I told him this request was 
probably a no go because of our experience with nanopartice (sphere) 

Ends up he is part of Philip Wong's group.  He will follow up Yuan, 
whose nanoparticles we rejected to see where she is doing her spinning.


At 03:14 PM 8/14/2006, Mary Tang wrote:
>Hi everyone --
>You know, I'm a bit concerned about doing this at the headway2 for 
>the same reasons we haven't approved nanoparticles there.  Are we 
>still planning to Mahnaz' spare spin coater for nanoparticle dispersion?
>Gael Close wrote:
>>Dear SpecMat committe,
>>I would like to request the authorization to bring to the lab a
>>suspension of carbon nanotube in dichlorobenze.
>>Name: Gael Close
>>Coral ID: closega
>>Phone number: 650-450-3567
>>Email: closega at
>>Advisor: Prof H.-S. Philip Wong
>>Multiwall carbon nanotube suspended in dichlorobenzene.
>>The multiwall are originally from Nanolab, Inc. The dicholorobenze is
>>from Fisher Scientific. The MSDS are attached.
>>Nanolab Inc.
>>  55 Chapel Street, Newton, MA 02458.
>>  Tel: 617-581-6747
>>Fisher Scientific
>>   1 Reagent Lane
>>   Fair Lawn, NJ 07410
>>   Tel: 201-796-7100
>>The paper discussing how carbon nanotubes in dicholorbenzene can be
>>aligned at specified locations is available online at:
>>I am trying to replicate this protocol to deposit carbon nanotubes on
>>a Si chip. This is part of my PhD project. The proposed protocol works
>>only if the nanotubes are suspended in dicholorobenzene.
>>I plan on dispensing of few ml of the solution on my samples at the
>>headway2 spin coater . Once the solution has been dispensed, I will
>>use only equipment from the contimated category:
>>    - PMMA coating at headway2 again
>>    - Exposure at ebeam
>>    - Development at wbebeam
>>    - Metal evaportion at innotec
>>    - Metal lift off at wbsolvent
>>    End of the process flow.
>>I expect to bring the liquid solution in a 10ml vial. The solution
>>will be prepared in a chemistry lab.
>>Amount: 10ml. Form: liquid.
>>The chemicals will be stored outside SNF.
>>My process will generate solid waste: the aluminum foil protecting the
>>headway will be contaminated with dicholorobenzene and carbon
>>nanotube. Since the dicholorobenzene is a solvent, the waste could be
>>put in a plastic bag, then in the solvent contaminated bin - just like
>>when spinning PMMA in anisole.
>>Please let me know if you have additional questions. Thank you,
>Mary X. Tang, Ph.D.
>Stanford Nanofabrication Facility
>CIS Room 136, Mail Code 4070
>Stanford, CA  94305
>mtang at

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