Fast switching response and dielectric behaviour of fullerene/ferroelectric liquid crystal nanocolloids |
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Authors: | Ravi Kumar Shukla Kuldeep Kumar Raina |
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Institution: | 1. Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universit?t Darmstadt, Darmstadt, Germany;2. Materials Research Laboratory, School of Physics and Materials Science, Thapar University, Patiala, India |
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Abstract: | The electro-optical and dielectric responses of the fullerenes C60-doped ferroelectric liquid crystal (FLC) nanocolloids are reported. Order parameter and phase transition temperature remain invariant as a function of varying dopant concentration (0.10 wt% to 0.50 wt%). Faster switching response of nanocolloids comparing to that of the non-doped FLC is manifested by increase in the localised electric field (around 76% increment for 0.50 wt%), while reduction in the spontaneous polarisation could be the result of anti-parallel correlation amid dopant and FLC dipoles. Decrease in dielectric constant, absorption strength, dielectric strength and rotational viscosity of FLC nanocolloids than that of non-doped FLC is the other consequence of C60 doping. Goldstone-mode relaxation frequency is found to be increased with increasing doping concentration of C60 in FLC. |
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Keywords: | fullerenes ferroelectric liquid crystal nanocolloids electro-optical response dielectric dynamics |
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