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Electrooptic Effects in the Nematic and Isotropic Phases of Aqueous V 2 O 5 Suspensions
Author(s) -
LamarqueForget S.,
Pelletier O.,
Dozov I.,
Davidson P.,
MartinotLagarde P.,
Livage J.
Publication year - 2000
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200009)12:17<1267::aid-adma1267>3.0.co;2-5
Subject(s) - materials science , liquid crystal , aqueous solution , isotropy , optics , optoelectronics , chemistry , physics
In water‐based lyotropic liquid crystals (LCs), e.g., aqueous suspensions of V 2 O 5 , the electrooptical effects typical of thermotropic mesophases are difficult to observe, owing to the large conductivity and electrochemical reactions of the suspensions. Overcoming these difficulties, the authors demonstrate that V 2 O 5 aqueous nematic suspensions can be aligned and even reoriented in a low AC electric field—in addition to the recently reported slow (30 min) alignment in magnetic fields. The response time of ∼1 s indicates that mineral LCs may be suitable for simple display applications.