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Bacteriorhodopsin oriented in polyvinyl alcohol films as an erasable optical storage medium

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Abstract

Films of oriented bacteriorhodopsin have been formed in polyvinyl alcohol with excellent optical quality. Images with high contrast have been impressed and erased on these films. Second-harmonic microscopy has been used to read the image on a bacteriorhodopsin–polyvinyl alcohol film without erasure. The potential of these films for molecular information storage and computation is discussed.

© 1991 Optical Society of America

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