Scientific Results

Reversible Fragmentation and Self-Assembling of Nematic Liquid Crystal Droplets on Functionalized Pyroelectric Substrates

Year: 2012

Authors: Merola F., Grilli S., Coppola S., Vespini V., De Nicola S., Maddalena P., Carfagna C., Ferraro P.

Autors Affiliation: CNR -Istituto Nazionale di Ottica (CNR-INO), Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
Università degli Studi di Napoli “Federico II”, Piazzale Tecchio 80, 80125 Napoli, Italy;
Università degli Studi di Napoli “Federico II”, Dipartimento di Scienze Fisiche
Via Cintia, 80126 Napoli, Italy;
Istituto di Chimica e Tecnologia dei Polimeri (CNR-ICTP), Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy

Abstract: Investigation on the behavior of nematic liquid crystals on functionalized polar dielectric crystal substrates is accomplished. Very interesting effects can be observed in maneuvering liquid crystal droplets on the substrate surface, driven by electric fi elds generated by pyroelectric effect. Reversible drops fragmentation
and self-assembling in different confi gurations can be achieved. The dynamics of the observed phenomena is studied and the repeatability of the process is full assessed.

Journal/Review: ADVANCED FUNCTIONAL MATERIALS

Volume: 22 (15)      Pages from: 3267  to: 3272

KeyWords: Liquid crystals; lithium niobate; fragmentation; droplets assembling;
DOI: 10.1002/adfm.201200323

Citations: 27
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English