[labnetwork] How to charge for sputtering target use

[Michael Dimitri Sinanis]

Long,

One method that I have used in a similar situation is as follow:

  1.  Target with cost A installed (Cost AA, weight WW)
  2.  User 1 sputters 2 microns
  3.  User 2 sputters 1 micron
  4.  User 3 sputters 4 microns
  5.  User ............... (and so on)
  6.  Target A has been consumed and replaced with Target H
  7.  Target A (what is remaining) is reclaimed in dollars (Cost BB, weight XX)

Cost used = Cost AA - Cost BB
Metal used = Weight WW - Weight XX
Total microns sputtered = User 1 + User 2+ ......
Cost per micron used = Cost used / Total microns sputtered
Cost per metal used = Metal used / Total microns sputtered

If one target tends to take longer than a fiscal year to be consumed than I would use the market price per weight.
If the target tends to get consumed within a few months then I would use the cost per micron from the previous cycle to charge the use today.

Of course this is not perfect, but it gives you a fair baseline I think.

Best,

Michael


________________________________
From: labnetwork-bounces at mtl.mit.edu <labnetwork-bounces at mtl.mit.edu> on behalf of Chang, Long <lvchang at Central.UH.EDU>
Sent: Thursday, June 4, 2020 11:50 AM
To: labnetwork at mtl.mit.edu <labnetwork at mtl.mit.edu>
Subject: [labnetwork] How to charge for sputtering target use

Hi All,

At UHNF, each user owns their own sputtering target. We are currently considering a shared model for expensive targets like Au, Pt, etc. Does anyone have a reasonable way to estimate material usage vs something we can track so that we can charge fairly? What approaches do y’all take to manage how expensive material is shared?

Thanks,
Long

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20200605/c822c03a/attachment.html>