http://www.cnr.it/ontology/cnr/individuo/prodotto/ID19206
Optically induced Light Modulation in an hybrid nanocomposite system of inorganic CdSe/CdS nanorods and nematic liquid crystals (Articolo in rivista)
- Type
- Label
- Optically induced Light Modulation in an hybrid nanocomposite system of inorganic CdSe/CdS nanorods and nematic liquid crystals (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.optmat.2010.02.022 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Petti L.; Rippa M.; Fiore A.; Manna L. and Mormile P. (literal)
- Pagina inizio
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- DOI: 10.1016/j.optmat.2010.02.022 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Institute of Cybernetics ''E. Caianiello\" of CNR, Via Campi Flegrei 34, 80072 Pozzuoli, Italy
National Nanotechnology Laboratory of CNR-INFM, 73100 Lecce, Italy
Fondazione Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy (literal)
- Titolo
- Optically induced Light Modulation in an hybrid nanocomposite system of inorganic CdSe/CdS nanorods and nematic liquid crystals (literal)
- Abstract
- We studied the thermo-optical properties and nonlinearities of new materials prepared in our labs which consisted in a nanocomposite blend of liquid crystals and semiconductor CdSe/CdS nanorods. We found a thermally induced optical bistability when a laser beam travelled across the cell, as the beam was able to cause a reversible switching in the optical properties of the blend from a scattering state to a transmissive state. The optically induced light modulation by a pump beam (Ar+ laser) was probed by a weak He-Ne beam when the two laser beams were incident on the cell simultaneously. The dependence of the hys- teresis loop on the modulation frequency of the incident beam was also studied, and the variation in the light intensity was successfully exploited as a mean to switch the system from an opaque state to a transmission state, as it had a strong influence on the thermo-optical behaviour of the blend. Our results indicate a thermally- and optically induced light modulation, and demonstrate that the proposed system is promising for applications in thermo-optical switches. (literal)
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