Abnormal dispersion of refractive index of purple membranes in an aqueous medium

Abstract

The refractive index of purple membranes in a water suspension has been measured refractometrically in the visible range of the spectrum. A region of anomalous dispersion has been found, due to a strong absorption by the retinal residue in bacteriorhodopsin macromolecules.

© 2010 Optical Society of America

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