Permanent Dipole Fluctuations of Collagen Molecules

Demonstration of the Permanent Dipole Fluctuations of Collagen Molecules 

Noise Conductivity Emission Spectra of Collagen Solutions 

The dipolar nature of amino acid intervening in molecular structure of collagen implies the existence of a permanent dipole i orientated along the revolution axis of the cylindrical rod. By electrical birefringence measurements, Yoshioka and O Konski have predicted a value of about 15000 Debye for this important permanent dipole and an orientational relaxation time of 0.1-0.2 ms. These results are in agreement with the more recent birefringence experiments of Bemengo et On the other hand, 

Actually, by noise spectrography measurements, electrode polarization effects are considerably eliminated and there is not an induced moment due to an external applied field. 

We present here recently obtained results by measuring the emission noise spectrum—in the absence of applied electrical field—due to the molecular rotational Brownian motion of collagen molecules. 

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