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EnglishA polymer dispersed ferroelectric liquid crystal ~PDFLC! is a novel material combining propertiesof a polymer ~flexibility, elasticity! and ferroelectric liquid crystal ~low voltage, fast electro-opticalswitching!. Another interesting field of application of PDFLC is the detection of low intensityradiation using the pyroelectric response of the material. A PDFLC material containing aferroelectric liquid crystal ~FLC! with very high spontaneous polarization ~close to 200 nC/cm2 atroom temperature! was prepared to study its pyroelectric properties. The matrix was pure polymerpoly-butadiene-styrene which can be mixed with liquid crystals in volatile solvents. The pyroelectricresponse and the spontaneous polarization were measured over a wide temperature range of thesmectic C* phase and compared with the corresponding quantities of the pure FLC. Figures of meritof pyroelectric PDFLC films were estimated and compared with those known for conventionalferroelectrics.
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| Titolo: | Pyroelectric properties of polymer dispersed ferroelectric liquid crystals | |
| Autori: | ||
| Data di pubblicazione: | 1998 | |
| Rivista: | ||
| Handle: | http://hdl.handle.net/20.500.11770/136830 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/20.500.11770/136830
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