Optical and thermal properties of Fe3O4 nanoparticle-doped cholesteric liquid crystals |
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| Authors: | Wanshu Zhang Xiao Liang Chenyue Li Fasheng Li Lanying Zhang |
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| Affiliation: | 1. Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, P. R. China;2. Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, P. R. China;3. Department of Chemistry, Dalian Medical University, Dalian, P. R. China |
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| Abstract: | A composite system of Fe3O4 nanoparticle-doped cholesteric liquid crystals with properties of broadband reflection and controllable temperature under high-frequency electric field is proposed. The broadband reflection can shield the near-infrared light in summer and the electromagnetic-thermal effect by the Fe3O4 nanoparticles can deice or defrost in winter for high transmittance and good safety. Furthermore, the thermal effect may be precisely controlled and significantly enhanced by adjusting the factors of the doped concentrations and the applied electric field parameters (duration time, magnitude and frequency). This composite system may have potential applications for multifunctional windows of architectures and vehicles. |
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| Keywords: | Cholesteric liquid crystal broadband reflection Fe3O4 nanoparticle electromagnetic-thermal effect |
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