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Özgan, Şükrü, Eskalen, Hasan, Tapkıranlı, Yusuf. (1397). Thermal and electro-optic properties of graphene oxide-doped hexylcyanobiphenyl liquid crystal. , 12(3), 169-176. doi: 10.1007/s40094-018-0307-y
Şükrü Özgan; Hasan Eskalen; Yusuf Tapkıranlı. "Thermal and electro-optic properties of graphene oxide-doped hexylcyanobiphenyl liquid crystal". , 12, 3, 1397, 169-176. doi: 10.1007/s40094-018-0307-y
Özgan, Şükrü, Eskalen, Hasan, Tapkıranlı, Yusuf. (1397). 'Thermal and electro-optic properties of graphene oxide-doped hexylcyanobiphenyl liquid crystal', , 12(3), pp. 169-176. doi: 10.1007/s40094-018-0307-y
Özgan, Şükrü, Eskalen, Hasan, Tapkıranlı, Yusuf. Thermal and electro-optic properties of graphene oxide-doped hexylcyanobiphenyl liquid crystal. , 1397; 12(3): 169-176. doi: 10.1007/s40094-018-0307-y

Thermal and electro-optic properties of graphene oxide-doped hexylcyanobiphenyl liquid crystal

Journal of Theoretical and Applied Physics
مقاله 2، دوره 12، شماره 3، آذر 2018، صفحه 169-176  XML اصل مقاله (1.48 M)
شناسه دیجیتال (DOI): 10.1007/s40094-018-0307-y
نویسندگان
Şükrü Özgan email 1؛ Hasan Eskalen2؛ Yusuf Tapkıranlı1
1Department of Physics, Kahramanmaraş Sütçü İmam University
2Materials Science and Engineering Program, Institute of Science and Technology, Kahramanmaraş Sütçü İmam University
چکیده
AbstractHexylcyanobiphenyl liquid crystal was doped with graphene oxide at ratios %0.25GO, %0.5GO, %1GO and %2GO, and the change in physical properties of pristine and the doped liquid crystals has been investigated. The phase transitions of prepared samples were studied by differential scanning calorimeter and polarized optical microscopy. The differential scanning calorimeter and polarized optical microscopy results are in good agreement when examining the nematic–isotropic liquid phase transition temperatures of the hexylcyanobiphenyl. The liquid crystal texture images obtained with polarized optical microscopy reveals that thermal stability of sample changed with graphene oxide concentration, i.e., increased with graphene oxide concentration. Impedance, capacitance, conductivity and real and imaginary dielectric constants of the pure and doped liquid crystals were obtained depending on frequency and voltage at the room temperature by using impedance analyzer. These electrical properties of the pure and the graphene oxide-doped samples showed an increase with increasing the graphene oxide ratio. The voltage-dependent light transmittance experiment revealed that threshold voltage of LC cells decreased for %0.25GO- and  % 1GO-dispersed samples, but it was increased at %0.5GO- and %2GO-dispersed samples.
کلیدواژه‌ها
Liquid crystal؛ Graphene oxide؛ Thermal and electro؛ optic properties؛ DSC؛ POM؛ Dielectric
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