Science

‘Superhydrophobic’ Knife Chops a Water Droplet Cleanly in Half

Odds are that you’ve never tried to slice through an individual drop of water before — nor would you have any reason to — and given the properties of water and cohesion, it would prove difficult. Unless, of course, if you were wielding this “water-hating” knife developed by engineers at Arizona State University and Youngstown State University.

The hydrophobic knife with an ability to cut cleanly through a droplet  in a “gentle fashion” could have application for separating proteins that are mixed with biological fluids and need to be analyzed for biomedical research, New Scientist states.

Engineers Create Superhydrophobic Knife to Separate Cut Water for Use in Biomedical Research

(Image: 10.1371/journal.pone.0045893.g002)

“Multiprotein separation is vital for the detection of important proteins that provide valuable information on gene expression and can serve as early signals of a disease state,” the research states.

Watch footage of the knife cutting the water in action:

According to the research published in the journal PLoS One, the team put the water on a “superhydrophobic surface.” They kept it in place with wire loops so when cut it wouldn’t result in “satellite droplets,” maintaining it in only two distinct droplets. The knife made from polyethylene, and others from zinc, was treated with silver nitrate and HDFT to make it superhydrophobic.

(H/T: Gizmodo)

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Comments (14)

  • dugsok
    Posted on October 4, 2012 at 12:25pm

    you can really cut the cheese with this

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    dugsok  
  • Cosmic Duck
    Posted on October 4, 2012 at 5:34am

    Just a matter of time before we see something like this on late night TV for only $19.95. But wait, there’s more!

    Report this comment

    Cosmic Duck  
  • Mr.buff1959
    Posted on October 4, 2012 at 2:35am

    Having the ability to separate water with out high pres, would have many uses.

    Report this comment

    Mr.buff1959  
  • christos
    Posted on October 3, 2012 at 11:55pm

    They can not produce a Human Living Cell.

    Report this comment

    christos  
    • OhioRifleman
      Posted on October 4, 2012 at 11:47am

      And I do not believe that was mentioned in the article.

      Report this comment

      OhioRifleman  
    • Cesium
      Posted on October 4, 2012 at 3:19pm

      Who is they? the scientists on this project? why would they try to make a human cell.. are these guys cell biologists? I wouldn’t think they are considering this technology.. What if we did create a human cell in the future from parts… Craig Venture already did it with microbes… is this why you had to amend your statement from, “they cannot create a living cell” to they cannot create a human cell?” You creationists must be starting to feel cornered.

      Report this comment

      Cesium  
    • christos
      Posted on October 5, 2012 at 2:45pm

      ohiorifleman – cesium – “They” People & or Science Community,copying is not the same as creating from scratch,,,Adam lived 700 years there is nothing that has not been created before this is all old technology,this is all grand but do it with your own $ TEA,TA

      Report this comment

      christos  
    • christos
      Posted on October 5, 2012 at 2:48pm

      Man does not need to invent anything,,,everything has already been placed/Created here for Life by +JESUS+GOD+ ,Scientists & Schools are a Filthy Rag.

      Report this comment

      christos  
  • chips1
    Posted on October 3, 2012 at 9:11pm

    They can use this in the school cafeteria. Those kids will be in shape in less than a week.

    Report this comment

    chips1  
  • Stoic one
    Posted on October 3, 2012 at 9:10pm

    interesting….I ‘d like to see some applications.

    Report this comment

    Stoic one  
  • AngryK9
    Posted on October 3, 2012 at 9:02pm

    And this means what to me?

    Report this comment

    AngryK9  
    • Cesium
      Posted on October 4, 2012 at 3:16pm

      so you are admitting that you wouldn’t be able to conceive of future potential applications that could revolutionize a number of technologies? We could go back to the days of watson and crick or other biochemists you don’t know who solved the structures of macromolecules… then you receive a life saving treatment in the future because of that knowledge but when it was discovered the best you can do is say,, big deal what’s it to me? you probably would like to see funding cut to basic research

      Report this comment

      Cesium  
  • randy
    Posted on October 3, 2012 at 8:56pm

    Hey, I can chop water in half also……. Just freeze it :)

    Report this comment

    randy  
  • marine249
    Posted on October 3, 2012 at 8:53pm

    I saw this when I cut my finger.

    Report this comment

    marine249  

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