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posted by mrpg on Saturday December 16 2017, @05:43AM   Printer-friendly
from the no-unicode-for-these? dept.

Origami plus eels equals electricity:

Electric eels generate voltage through long stacks of thin cells that run end-on-end through their bodies. Called electrocytes, these cells create electricity by allowing sodium ions to rush into one end and potassium ions out the other, all at the same time. The voltage created by each cell is small, but together, the stacks within a single eel can generate as many as 600 V.

To recreate this effect, researchers from the University of Fribourg, the University of Michigan and the University of California San Diego turned to the difference in salinity between fresh and saltwater. They deposited hydrogel, ion-conducting blobs onto clear plastic sheets and separated them with ion-selective membranes.

Hundreds of blobs containing salt and freshwater were arranged in an alternating pattern. When the team had all these gel compartments make contact with one another, they were able to generate 100 V through what is known as reverse electrodialysis, where energy is generated through differing salt concentrations in the water.

While the eel triggers the simultaneous contact of its electrocytes using a neurotransmitter called acetylcholine as the command signal, the team achieved this by carefully working a special origami pattern – called a Miura-ori fold – into the plastic sheet. This meant that when pressure was applied to the sheet, it quickly snapped together and the cells shifted into exactly the right positions to create the electricity.


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  • (Score: 2) by captain normal on Saturday December 16 2017, @06:38AM

    by captain normal (2205) on Saturday December 16 2017, @06:38AM (#610638)

    How many of these hydro cells does it take to generate 100 volts? And how much current can it put out?

    --
    When life isn't going right, go left.
  • (Score: 3, Funny) by Virindi on Saturday December 16 2017, @07:13AM (2 children)

    by Virindi (3484) on Saturday December 16 2017, @07:13AM (#610643)

    Shocking results! I'm sure the mood in the lab was electric!

    Sorry, had to be done.

    • (Score: 0) by Anonymous Coward on Saturday December 16 2017, @10:32AM

      by Anonymous Coward on Saturday December 16 2017, @10:32AM (#610673)

      No, it didn't.

    • (Score: 0) by Anonymous Coward on Monday December 18 2017, @06:41PM

      by Anonymous Coward on Monday December 18 2017, @06:41PM (#611519)

      And as we all know eels are slippery. One might say that they would do an electric slide.

  • (Score: 2) by theluggage on Saturday December 16 2017, @12:19PM

    by theluggage (1797) on Saturday December 16 2017, @12:19PM (#610681)

    My electric hovercraft is full of eels...

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