کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5411695 | 1506580 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dielectric anisotropy properties of nanostructure metal oxide semiconductor and 4-4â²-n-pentylcyanobiphenyl based on nano-nematic composite systems
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Dielectric anisotropy properties of SnO2, ZnO and Fe2O3 nanoparticles doped into 4-4â²-n-pentylcyanobiphenyl (5CB) composite liquid crystals have been investigated. The dielectric anisotropy parameters and splay rotation coefficient of the 5CB nematic liquid crystal were improved by doping of SnO2, ZnO and Fe2O3 nanoparticles. The prepared nano-nematic composites exhibited p-type Îε at room temperature. The highest Îε value was found to be for Fe2O3 nanoparticles. The prepared nano-nematic composite systems exhibited an increase in the critical dielectric anisotropy transition frequency from 800 kHz to 1 MHz. The increase in Îε of the 5CB is due to the dipolar interaction between nanoparticles and liquid crystal molecules. The obtained results indicate that the new liquid crystals having high dielectric anisotropy can be prepared with the nanoparticles doping for the liquid crystal displays.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 190, February 2014, Pages 169-173
Journal: Journal of Molecular Liquids - Volume 190, February 2014, Pages 169-173
نویسندگان
Faten Al-Hazmi, Ahmed A. Al-Ghamdi, Noruh Al-Senany, Fowzia Alnowaiser, Fahrettin Yakuphanoglu,