[Sem] Retaining the SEM and building a sputter coater

[John McMaster]

Yes...sorry I was thinking of carbon evaporation.  IIRC sputtering is 
around 100 mTorr which should be pretty easy to reach.

On that note though there are a number of advantages to carbon 
evaporation so it may be worth considering as an alternative.

I have piles of HV equipment so I shouldn't need one for playing around 
here.  If there isn't someone else interested in playing with it yet can 
you hang onto it for the time being?

I would however be interested in seeing other sputtering equipment, SEM, 
etc if you could show them to me (us?) at UCSF (field trip!).

John

On 07/10/2013 06:56 PM, Larry Ackerman wrote:
> some comments:
> you don't need or want high vacuum for a sputter coater--mechanical 
> pump only
>
> my offer for a high voltage power supply remains--one is essential
>
> I am willing to show anyone interested the old commercial unit I have 
> revived in my lab at UCSF.
>
> Larry
>
> On 7/10/2013 12:29 AM, Jeff Miller wrote:
>> Actually, here's a pair of Mini Convectrons for about $40 shipping
>> included. We really could use 2 or 3. The one pictured has 1/8" npt
>> fittings, which are probably the most practical for us at this point.
>>
>> Ebay item #
>> 231013652852
>>
>> I'm short on cash, but I could clean, test, and calibrate them. Anyone
>> feeling flush with $40?
>>
>> -Jeff
>>
>> ------------------------------------------------------------------------
>> *From:* Jeff Miller <mysterylectricity at yahoo.com>
>> *To:* "sem at lists.noisebridge.net" <sem at lists.noisebridge.net>
>> *Sent:* Tuesday, July 9, 2013 11:59 PM
>> *Subject:* Re: [Sem] Retaining the SEM and building a sputter coater
>>
>> Oh BTW how big is that diff pump? Water cooled I bet?
>>
>> I've been reading about how silver is a practical alternative to gold
>> for sputtering specimens. Looks promising.
>>
>> -Jeff
>>
>>
>> ------------------------------------------------------------------------
>> *From:* John McMaster <johndmcmaster at gmail.com>
>> *To:* sem at lists.noisebridge.net
>> *Sent:* Tuesday, July 9, 2013 11:26 PM
>> *Subject:* Re: [Sem] Retaining the SEM and building a sputter coater
>>
>> FWIW I am converting my vacuum system from diffusion to turbo pumped.
>> Assuming it works (they are really expensive working so I had to piece
>> it together from eBay after doing a bunch of research) I may have a
>> Varian diffusion pump to donate to NB for SEM / sputter system use.  I
>> will try to play around with coating on my setup in the near future.
>>
>> Let me know if there is interest for people to discuss and plan things
>> out.  I can usually only meet on weekends though.
>>
>> On 07/09/2013 12:08 AM, Jeff Miller wrote:
>>> Well it's a bit of a catch-22. As long as there's ongoing interest in
>>> the SEM and we can keep it and the space free from decay, the SEM can
>>> stay. If it's underutilized and falls into disrepair, it should go
>>> somewhere it might be better appreciated.
>>>
>>> I haven't seen the space lately but it sounds finished enough.
>>>
>>> I think we should put the priority on building a sputter coater. It
>>> should be fairly simple to do. I've seen some pretty poor designs on
>>> YouTube that still sort of work. I think we could build a pretty nice
>>> one over 2 or 3 months of weekends, tops.
>>>
>>> Probably <$100 in parts that we can't scrounge or make for something
>>> quite nice.
>>>
>>> I'll be looking at commercial designs this week and try to come up
>>> with some plans this week and next.
>>>
>>> -Jeff
>>>
>>>
>>>
>>>
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>>
>>
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