Can I pass liquid through fiber optic strands?

Discussion in 'General Science' started by JJoll, Aug 25, 2016.

  1. JJoll

    Thread Starter Member

    May 7, 2013
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    Hi,
    I am a university research student and for my project I need very thin microtubes. Similarly to the ones that you can find in this website: https://www.raumedic.com/technologies/extrusion/micro-tubing/

    I need a microtubing with inner diameter of approximately 0.5mm and outer diameter of less than 0.8mm. I need to pass some sort of liquid through these tubes and I was just wondering if I could use fiber optics strands for this purpose? I have not used fiber optics strands before but since they are hollow I thought it is possible to pass liquids through them, is it going to work?


    thanks
     
  2. ian field

    Distinguished Member

    Oct 27, 2012
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    Never heard of hollow strand glass fibers - but you might get some capilliary action in the spaces between the strands.
     
  3. MaxHeadRoom

    Expert

    Jul 18, 2013
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  4. SLK001

    Well-Known Member

    Nov 29, 2011
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    Fiber optic strands are NOT hollow. Where did you hear that they were?
     
  5. crutschow

    Expert

    Mar 14, 2008
    12,995
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    Fiber optic strands may be referred to as a "light pipe" but that pipe is not hollow.
    The light reflects off the inner surfaces of the strand at very near 100% efficiency due to total internal reflection, allowing the light to travel down the strand and around corners as if it were a pipe.
     
  6. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    There are lots of real tubing options with ID's of 0.5 mm. Can you help us narrow the search? Depending on the flow rate you need, viscosity of your liquid, and distance the pressure required can get quite high.

    John
     
  7. KJ6EAD

    Senior Member

    Apr 30, 2011
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    Just google capillary tubing.
     
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  8. shortbus

    AAC Fanatic!

    Sep 30, 2009
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    The TS probably thought the fibers were hollow because they start out a glass tube in the first steps of making them.
     
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  9. JJoll

    Thread Starter Member

    May 7, 2013
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    Flow rate wont matter in my application. It could be slow or fast. I am trying to pump/force regular ink through these tubes. The viscosity of black ink according to this chart (http://www.viscopedia.com/viscosity-tables/substances/ink/) is roughly 5.7mPA.s. The travel distance (tube length) shouldn't be more than 0.5 meter. Also I want the OD to be no more than 0.8-0.9mm. It would be great if you could direct me to a couple of vendors that sell such tubbings. I found a couple of vendors that supply medical tubings with such a low ID but they are very expensive. They quoted me around $50/meter.
     
  10. JJoll

    Thread Starter Member

    May 7, 2013
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    thanks I will check this out.
     
  11. JJoll

    Thread Starter Member

    May 7, 2013
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    I have never seen or worked withfiber optics and for some reason I always thought they are hollow inside:rolleyes:
     
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  12. hp1729

    Well-Known Member

    Nov 23, 2015
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    Oh now, be kind. OP is an engineering student and you know anything they can imagine must be possible, like warp drives, beaming matter or the big bang theory. :)
     
  13. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    What do you want the tubing made from? Some of the many options: glass, PVC, modified PVC, Nylon, various stainless steels, silicone rubber, newer Teflon-like plastics, Teflon-lined stainless, various nickel alloys (e.g Iconel). The list is really quit long. If 0.5 mm is your maximum ID, what is your minimum ID?

    John
     
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  14. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    How about this? They may stock smaller ID capillary tubing.
     
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  15. KJ6EAD

    Senior Member

    Apr 30, 2011
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  16. JJoll

    Thread Starter Member

    May 7, 2013
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    the material type wont matter to me as long as it is flexible. I was personally looking for silicone rubber or any type of flexible plastic. The Id needs to be somewhere between 0.4mm to 0.7mm. less than 0.4 is not really ideal. thanks
     
  17. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    Do you have any remaining questions now that you know where to find tubing with your specifications?

    John
     
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