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that contracts rapidly, in 10 seconds or less, by .5mm or more, when bombarded by electrons as from a cathode ray tube? or expands? could either be living tissue or dead organic matter. thanks!

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I think your question is a bit specific, but piezoelectric organic substances do exist. There was a paper in nature that researchers at Berkeley published.

Please see the following journal article:

Also see the following public article:

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I don't know if it would contract by the amount that you are after, but bone (which has both organic and inorganic components) is piezoelectric.

For an overview, see

They suggest that two different mechanisms are responsible for these effects: classical piezoelectricity due to the molecular asymmetry of collagen in dry bone, and fluid flow effects, possibly streaming potentials in wet bone.

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