Research Article
ÇİNKO OKSİT NANOPARÇACIK SENTEZLENMESİ VE E7 NEMATİK SIVI KRİSTALİNİN DİELEKTRİK VE KAPASİTANSA ETKİSİ
Abstract
Bu çalışmada hidrotermal yöntem kullanılarak Çinko Oksit (ZnO) nanoparçacık sentezlendi. Sentezlenen ZnO nanoparçacık geçirimli elektron mikroskobu ve x-ışınları ile karakterizasyonu yapıldı. ZnO nanoparçacık, E7 nematik sıvı kristaline farklı oranlarda katkılanarak numuneler elde edildi. Bu numunelerin gerçek ve sanal dielektrik sabiti ve mutlak kapasitans değişimleri 100 Hz-15 MHz frekans aralığında oda sıcaklığında incelenmiştir. Gerçek dielektrik belli frekansa kadar sabit gibi çok az azalarak değiştiği, 0.8 MHz frekansa gelince birden bire azalarak sıfır olduğu, nanoparçacık katkı oran ile arttığı tespit edilmiştir. Sanal dielektrik kısmı düşük frekanslarda azalmakta, sonra sabit gibi davranıyor ve daha yüksek frekansta artarak yaklaşık 2 MHz frekans civarında pik yapar ve azalarak sıfıra gidiyor. Sıvı kristalin dielektrik ve kapasitans değerleri % 0.6 ZnO nanoparçacık katkı oranında en büyük değişim göstermektedir.
Keywords
Supporting Institution
Kahramanmaraş Sütçü İmam Üniversitesi Bilimsel Araştırma Projeleri Koordinatörlüğü
Project Number
2019/6-11 YLS
Thanks
Kahramanmaraş Sütçü İmam Üniversitesi Bilimsel Araştırma Projeleri Koordinatörlüğü'ne 2019/6-11 YLS No'lu Proje kapsamında maddi destek sağlayanlara teşekkür ederiz.
References
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- Okutan, M., O. Köysal, S. E. San, and Y. Köysal. 2012. “Electrical Parameters of Different Concentrations of Methyl Red in Fullerene Doped Liquid Crystal.” International Scholarly Research Notices 2012.
- Özgan, Şükrü, Hasan Eskalen, and Yusuf Tapkıranlı. 2018. “Thermal and Electro-Optic Properties of Graphene Oxide-Doped Hexylcyanobiphenyl Liquid Crystal.” Journal of Theoretical and Applied Physics 12(3):169–76. doi: 10.1007/s40094-018-0307-y.
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Year 2022,
Volume: 25 Issue: 3, 341 - 348, 03.09.2022
Abstract
Project Number
2019/6-11 YLS
References
- Caputo, Roberto, Antonio De Luca, Luciano De Sio, Luigia Pezzi, Giuseppe Strangi, Cesare Umeton, Alessandro Veltri, Rita Asquini, Antonio d’Alessandro, and Domenico Donisi. 2009. “POLICRYPS: A Liquid Crystal Composed Nano/Microstructure with a Wide Range of Optical and Electro-Optical Applications.” Journal of Optics A: Pure and Applied Optics 11(2):24017.
- Castellano, Joseph A. 2006. “Modifying Light: Ubiquitous Today, Liquid-Crystal Displays Are the Outgrowth of More than a Century of Experimentation and Development.” American Scientist 94(5):438–45.
- Chen, Alan G., and David J. Brady. 1992. “Real-Time Holography in Azo-Dye-Doped Liquid Crystals.” Optics Letters 17(6):441–43. doi: https://opg.optica.org/ol/abstract.cfm?URI=ol-17-6-441.
- Chen, Robert H. 2011. Liquid Crystal Displays: Fundamental Physics and Technology. John Wiley & Sons.
- Dolgov, L., O. Yaroshchuk, and M. Lebovka. 2008. “Effect of Electro-Optical Memory in Liquid Crystals Doped with Carbon Nanotubes.” Molecular Crystals and Liquid Crystals 496(1):212–29.
- Eskalen, H., M. Okumuş, and Özgan. 2019. “Electro-Optical, Thermal and Dielectric Properties of Ternary Mixture of E7/6CB/6BA Liquid Crystal Mixture Complex.” Optik 187. doi: 10.1016/j.ijleo.2019.02.119.
- Eskalen, H., Ş. Özğan, ÜMİT ALVER, and S. Kerli. 2015. “Electro-Optical Properties of Liquid Crystals Composite with Zinc Oxide Nanoparticles.” Acta Physica Polonica, A. 127(3).
- Jánossy, István. 1994. “Molecular Interpretation of the Absorption-Induced Optical Reorientation of Nematic Liquid Crystals.” Physical Review E 49(4):2957.
- Khoo, Iam Choon, Min-Yi Shih, Michael V Wood, Brett D. Guenther, Pao Hsu Chen, Francesco Simoni, Sergei S. Slussarenko, Oriano Francescangeli, and Liana Lucchetti. 1999. “Dye-Doped Photorefractive Liquid Crystals for Dynamic and Storage Holographic Grating Formation and Spatial Light Modulation.” Proceedings of the IEEE 87(11):1897–1911.
- Kobayashi, Shunsuke, Tomohiro Miyama, Naoto Nishida, Yoshio Sakai, Hiroyuki Shiraki, Yukihide Shiraishi, and Naoki Toshima. 2006. “Dielectric Spectroscopy of Metal Nanoparticle Doped Liquid Crystal Displays Exhibiting Frequency Modulation Response.” Journal of Display Technology 2(2):121–29.
- Köysal, Oğuz, Mustafa Okutan, and Muharrem Gökçen. 2011. “Investigation of Dielectric Properties and Diffraction Efficiency Enhancements Caused by Photothermal Effect in DR9 Dye-Doped Nematic Liquid Crystal.” Optics Communications 284(20):4924–28.
- Lee, Wei, and Chi-Shen Chiu. 2001. “Observation of Self-Diffraction by Gratings in Nematic Liquid Crystals Doped with Carbon Nanotubes.” Optics Letters 26(8):521–23.
- Lee, Wei, J. S. Gau, and H. Y. Chen. 2005. “Electro-Optical Properties of Planar Nematic Cells Impregnated with Carbon Nanosolids.” Applied Physics B 81(2):171–75.
- Li, Hui, Yu Zhang, Hongfei Liu, and John Wang. 2011. “Large ZnO Mesocrystals of Hexagonal Columnar Morphology Derived from Liquid Crystal Templates.” Journal of the American Ceramic Society 94(10):3267–75.
- Matharu, Avtar S., Shehzad Jeeva, and P. S. Ramanujam. 2007. “Liquid Crystals for Holographic Optical Data Storage.” Chemical Society Reviews 36(12):1868–80.
- Okutan, M., O. Köysal, S. E. San, and Y. Köysal. 2012. “Electrical Parameters of Different Concentrations of Methyl Red in Fullerene Doped Liquid Crystal.” International Scholarly Research Notices 2012.
- Özgan, Şükrü, Hasan Eskalen, and Yusuf Tapkıranlı. 2018. “Thermal and Electro-Optic Properties of Graphene Oxide-Doped Hexylcyanobiphenyl Liquid Crystal.” Journal of Theoretical and Applied Physics 12(3):169–76. doi: 10.1007/s40094-018-0307-y.
- Özgan, Şükrü, and Mustafa Okumuş. 2011. “Thermal and Spectrophotometric Analysis of Liquid Crystal 8CB/8OCB Mixtures.” Brazilian Journal of Physics 41(2–3):118–22. doi: 10.1007/s13538-011-0034-1.
- Vardanyan, Karen Kolya, Ethan Daniel Palazzo, and Robert Dominic Walton. 2011. “Nematic Nanocomposites with Enhanced Optical Birefringence.” Liquid Crystals 38(6):709–15.
- Woltman, S. J., G. D. Jay, and G. P. Crawford. n.d. “Nature Mater. 6, 929 (2007).”
- Wu, Shin-Tson. 1989. “Design of a Liquid Crystal Based Tunable Electrooptic Filter.” Applied Optics 28(1):48–52.
- Yang, Deng-Ke, and Shin-Tson Wu. 2014. Fundamentals of Liquid Crystal Devices. John Wiley & Sons.
- Zharkova, G. M., and S. A. Streltsov. 2020. “Effect of Yttrium Oxide Nanoparticles on the Dielectric Properties and Dynamics of the Formation of Holographic Polymer–Liquid-Crystal Composites.” Journal of Optical Technology 87(1):23–28.
There are 23 citations in total.
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Wearable Materials |
| Journal Section | Materials Science and Engineering |
| Authors | |
| Project Number | 2019/6-11 YLS |
| Publication Date | September 3, 2022 |
| Submission Date | May 12, 2022 |
| Published in Issue | Year 2022Volume: 25 Issue: 3 |
