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Pros/cons of carbon nanotube (CNT) chemical sensors and conventional gas detectors?

  1. Oct 19, 2006 #1
    I'm wondering what are the pros and cons of the CNT sensors and conventional gas detectors?
    I know that CNT sensors can detect very low chemical adsorption energy, which a conventional gas detector probably can't.

    Besides that, is there any more pros and cons of the two?

    Thanks!
     
  2. jcsd
  3. Oct 19, 2006 #2

    NoTime

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    Big problem with CNT so far, is producing a consistant product in any meaningful quantity.
    CNT production is still very much a black art.
     
  4. Oct 19, 2006 #3
    Thanks for the reply!

    But how about the cost?
    I guess CNT is probably still pretty expensive, but I have no idea how much is the conventional gas detector usually cost. (since I've only seen it on tv..)

    Thanks.
     
  5. Oct 19, 2006 #4

    NoTime

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    AFAIK you can't buy the CNT variety.
    It's one of a kind, proof of concept stuff.

    How much a conventional detector costs depends on what you're detecting and the sensitivity.
    You can get something like a CO detector in the $20 to $30 range.
     
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