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Biophysical Journal 15: 573-576 (1975)
© 1975 the Biophysical Society

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Effect of water on piezoelectricity in bone and collagen.

T G Netto and R L Zimmerman

ABSTRACT

Interferometric measurements of bovine bone and tendon show that the values of the piezoelectric strain constant d14 decrease with hydration from the dry values of 0.2 X 10(-14) and 2.0 X 10(-14) m/V, respectively. The decrease of piezoelectricity in tendon is exponential with a characteristic hydration of 7% by weight from which an upper limit of the average molecular weight of the responsible electric dipole moments is deduced. The piezoelectricity in bone decreases relatively slowly with hydration indicating that the electric dipoles in bone collagen are subject to a different cancelling mechanism.






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Copyright © 1975 by the Biophysical Society.