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Vacuum

Hi,

I am really interested by your openQCM it seems adaptable to any experiments. However, I am not sure if will fit to mine.

I would to use is for a depressurization test (until vacuum) and I am afraid the materials will outgassed. I probably can make another shield in Teflon but what about the materials used for the quartz sensors and the quartz holder ?

Thank you for your help.
Claire.

Comments

  • edited April 3
    Hi Claire,

    In the past I worked with UHV environments for aerospace applications and actually QCM technology is one of the best and reliable methods in order to monitor mass variations at molecular scale, under vacuum and also in cryogenic environments.
    About your questions, we have already made a custom cell entirely in teflon. In this way the "sensor side" enviroment will be made only by these materials:

    - cell: teflon
    - sensor: quartz and gold electrodes in a substrate of Ti.
    - holder: iron with galvanic coverage of about 5 μm of Nickel Chromium

    Actually I do not have any idea if you would like to test depressurization directly inside the openQCM chamber, but it could be a good approach to use only the electronics together with the QCM sensor and holder directly inside a vacuum chamber. You can also insert the electronic inside a vacuum chamber without any problems.

    Best
    Raffaele
  • Hi Raffaele,

    Thank you for your answer. Is there any possibility to order here a cell in Teflon ?

    Best regards,
    Claire.
  • Hi Raffaele,

    I just saw on your online shop it was possible to order a Teflon cell.

    Do you have an other type of holder with longer stick or with a cable to link the sensor to the arduino through the vacuum chamber ?

    Claire.

  • Yes, but consider that the teflon cell is strickly linked to the openQCM case design. The teflon cell is a cover piece with 2 fluidic interfaces for connecting pump tubes, embedded in the opeQCM cover. I believe that is not useful without the rest of openQCM.
    Actually we do not sell cables to connect the sensor to the electronic (we are working in order to increase the accessories in our store), but you can easily connect the arduino in a vacuum chamber by means a vacuum USB feedthrough (eg.:
    http://www.mdcvacuum.com/displayproductcontent.aspx?d=MDC&p=i.1.6.1.1)
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