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Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals Volume 367, 2001 - Issue 1
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6. SURFACE PHENOMENA, THIN FILMS AND CONFINED SYSTEMS

New PDLC-Films Doped by Black Dye

Galina N. Dorozhkina SSC RF “NIOPIK” (Organic Intermediates & Dyes Institute), B. Sadovaya 1/4, Moscow, 103787, Russia; Joint Laboratory of Orientationally Ordered Media (OOM-Lab), C. Duca degli Abruzzi 24, I-10129, Torino, Italy
,
Elena K. Prudnikova SSC RF “NIOPIK” (Organic Intermediates & Dyes Institute), B. Sadovaya 1/4, Moscow, 103787, Russia; Joint Laboratory of Orientationally Ordered Media (OOM-Lab), C. Duca degli Abruzzi 24, I-10129, Torino, Italy
,
Sofia I. Torgova SSC RF “NIOPIK” (Organic Intermediates & Dyes Institute), B. Sadovaya 1/4, Moscow, 103787, Russia; Joint Laboratory of Orientationally Ordered Media (OOM-Lab), C. Duca degli Abruzzi 24, I-10129, Torino, Italy
,
Boris A. Umanskii SSC RF “NIOPIK” (Organic Intermediates & Dyes Institute), B. Sadovaya 1/4, Moscow, 103787, Russia; Joint Laboratory of Orientationally Ordered Media (OOM-Lab), C. Duca degli Abruzzi 24, I-10129, Torino, Italy
,
Nikolai V. Novoseletskii SSC RF “NIOPIK” (Organic Intermediates & Dyes Institute), B. Sadovaya 1/4, Moscow, 103787, Russia; Joint Laboratory of Orientationally Ordered Media (OOM-Lab), C. Duca degli Abruzzi 24, I-10129, Torino, Italy
&
Alfredo Strigazzi Dipartimento di Fisica, Istituto Nazionale di Fisica della Materia (INFM), Politecnico di Torino, C. Duca degli Abruzzi 24, I-10129, Torino, Italy; Joint Laboratory of Orientationally Ordered Media (OOM-Lab), C. Duca degli Abruzzi 24, I-10129, Torino, Italy
Pages 277-286 | Published online: 24 Sep 2006
 
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Abstract

Dichroic-dye doped PDLC films were obtained by polymerization-induced phase separation method with two types of dichroic dyes, including a black mixture. The electro-optic characteristics of these films were investigated for different concentrations of liquid crystal in polymer matrix. A strong memory effect was found in such systems, depending on LC concentration and on the type of dichroic dye.

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