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Biotech Hardware

Single-Celled Organism Converted Into Electronic Oscillator For Bio-Computing 34

Posted by timothy
from the your-slurm-is-thinking dept.
KentuckyFC (1144503) writes "The single-celled organism slime mold, or Physarum polycephalum, is an extraordinary creature. It explores its world by extending protoplasmic tubes into its surroundings in search of food and it does this rather well. Various researchers have exploited this process to show how Physarum can find optimal routes between different places and even solve mazes. Now one researcher has worked out how to use these protoplasmic tubes as clock-like electronic oscillators. His experiment was straightforward. He encouraged the growth of protoplasmic tubes between two blobs of agar sitting on electrical contacts. He then measured the resistance of the tubes at various voltages. This turns out to be about 6 megaohms. But the results show something else too: that the resistance oscillates over a period of about 73 seconds. That's due to the tubes contracting as waves of calcium ions pass through them. So altering the period of oscillation should be possible by influencing the production of calcium ions, perhaps using light or biochemistry. Electronic oscillators are significant because they are basic drivers of almost all active electronic devices. But this guy's goal is bigger than this. The plan is to grow a "Physarum chip" that acts as a general purpose computer, a device that will need some kind of oscillator or clock to co-ordinate activity, just as in an ordinary processor, although speed will not be its chief characteristic."
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Single-Celled Organism Converted Into Electronic Oscillator For Bio-Computing

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  • by GAATTC (870216) on Thursday April 03, 2014 @02:29PM (#46652239)
    "a human corporation called ISDN retaliates against the boppers by infecting them with a genetically modified organism called chipmold. The artificial disease succeeds in killing off the boppers, but when it infects the boppers' outer coating, a kind of smart plastic known as flickercladding, it creates a new race of intelligent symbiotes known as moldies " - from Rucy Rucker's Ware Tetrology series (http://en.wikipedia.org/wiki/Ware_Tetralogy). Notably, this set of three books was released free by the author (http://www.rudyrucker.com/wares/).

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