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microelectrode |
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microelectrode [‚mī·krō·i′lek‚trōd] (engineering) In biological research, an electrode with a microscopic tip dimension that may be placed adjacent to or inside a cell for the purpose of recording the electric potentials of single cells, passing electrical currents, or injecting electrically charged substances into the cell. In physical chemistry, a minute electrode used to perform electrolysis of small quantities of material. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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A microelectrode senses what's going on at the cell's surface by exchanging electrons with chemicals in solution surrounding the cell. Using a combination of lab-developed polymers and specially designed software, Sadik has created an "electronic nose" that uses microelectrode biosensors to mimic the way mammals detect odor, thus allowing the e-nose to monitor scents and detect illicit drugs and chemicals. The microelectrode was advanced by a stepping-motor drive([double dagger]) to search for nociceptive neurons that responded to noxious stimulation of the foot. |
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