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molecular machine |
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molecular machine [mə¦lek·yə·lər mə′shēn] (chemistry) A molecular device in which the component parts can display changes (reversible movement) in their relative positions as a result of some external stimulus (such as light, electrical energy, or chemical energy), resulting in a signal (a change in a chemical or physical property of the supramolecular system) that can be used to monitor the operation of the device. 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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| Instead of being pushed by an STM tip, such molecular machines could fuel their own movements with light or chemical energy, he says. Russell and Aloy studied yeast proteins, identifying the components of hundreds of molecular machines in these cells. Although Drexler's molecular machines still await construction, even his harshest critic in the field, a certain ever-courageous "anonymous," who had earlier called Drexler a flake and described his notions as "science fiction" and "pure hype," came around to admit the possibilities imaginable under nanotechnology. |
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