Undoped Photorefractive Ferroelectric Liquid Crystal

Authors

  • M. Talarico,

    1. Laboratory for the Synthesis, Characterisation and Applications of Molecular Materials (LASCAMM) – Unità INSTM della Calabria, Dipartimento di Chimica, Università della Calabria, 87030 Rende, Italy
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  • G. Barberio,

    1. Laboratory for the Synthesis, Characterisation and Applications of Molecular Materials (LASCAMM) – Unità INSTM della Calabria, Dipartimento di Chimica, Università della Calabria, 87030 Rende, Italy
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  • D. Pucci,

    1. Laboratory for the Synthesis, Characterisation and Applications of Molecular Materials (LASCAMM) – Unità INSTM della Calabria, Dipartimento di Chimica, Università della Calabria, 87030 Rende, Italy
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  • M. Ghedini,

    1. Laboratory for the Synthesis, Characterisation and Applications of Molecular Materials (LASCAMM) – Unità INSTM della Calabria, Dipartimento di Chimica, Università della Calabria, 87030 Rende, Italy
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  • A. Golemme

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  • We thank R. Termine for some data acquisition and numerical calculations. Supported in part by CIPE grants (Clusters 14 and 26) and by MIUR through a PRIN grant.

Abstract

Photorefractive chiral smectic A and C phases known to date are not intrinsically photoconducting, but contain a light sensitizer dissolved in the bulk. In this work, the first example of a single-component smectic mesophase (structure shown in Figure) which exhibits photorefractive behavior without any doping is presented. It is also shown that the observed photorefractive performance is larger than that previously reported for doped systems.

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