Year 2017, Volume 38, Issue 4, Pages 26 - 38 2017-12-08

The Effect of Polymer Structures on Polymer Stabilized Blue Phase Liquid Crystals
Polimer ile Kararlı Hale Gelen Mavi Faz Sıvı Kristallerine Polimer Yapıların Etkisi

Nejmettin AVCI [1]

165 299

In the present work, the effects of polymer structures on blue phase liquid crystals were carried out. Blue-phase liquid crystal samples with wide temperature range including room temperature were obtained by means of the polymer network formation. The temperature range of each sample with polymer-stabilized blue phase liquid crystal is at least C. The experimental results show that the electro-optical performances of blue phase are influenced by the interaction energy between the liquid crystal molecules and polymer network structure. As the anchoring energy of polymer network increases, the operating voltage increases. The response time of samples with high anchoring energy is faster and the kerr constant and hysteresis of those are smaller. In addition, the Kerr values of all samples are at least two orders of magnitude larger than that of nitrobenzene.

Bu çalışmada polimer yapıların mavi sıvı kristaller üzerindeki etkileri incelenmiştir. Polimer ağ oluşumları sayesinde oda sıcaklığının da dâhil olduğu geniş bir sıcaklık aralığında mavi faz sıvı kristal örnekleri elde edilmiştir. Polimer ile kararlı hale getirilmiş her bir mavi faz sıvı kristal örneğin sözü edilen faz aralığı en az C’dir. Deneysel sonuçlar göstermektedir ki; sıvı kristal moleküller ile polimer ağ oluşum arasındaki etkileşim enerjisi, mavi faz sıvı kristallerin elektro-optik performanslarını etkilemektedir. Polimer ağın demirleme enerjisi arttıkça çalışma voltajı artmaktadır. Demirleme enerjisi yüksek olan örneklerin cevaplama süreleri hızlı, Kerr sabitleri ve histeresizi düşüktür. Ayrıca bütün örneklerin Kerr sabiti değerleri nitzobenzenin Kerr sabiti değerinden en az iki mertebe yüksektir. 

  • [1]. Kikuchi, H. 2007. Liquid crystalline blue phases. In Liquid crystalline functional assemblies and their supramolecular structures: 99-117. Springer Berlin Heidelberg.
  • [2]. Castles, F., Morris, S. M., Terentjev, E. M., Coles, H. J. 2010. Thermodynamically stable blue phases. Physical review letters, 104(15), 157801.
  • [3]. Yan, J., Wu, S. T. 2011. Polymer-stabilized blue phase liquid crystals: a tutorial [Invited]. Optical Materials Express, 1(8), 1527-1535.
  • [4]. Li, Y., Huang, S., Zhou, P., Liu, S., Lu, J., Li, X., Su, Y. 2016. Polymer‐Stabilized Blue Phase Liquid Crystals for Photonic Applications. Advanced Materials Technologies, 1600102, 1-28.
  • [5]. Chen, Y., Wu, S. T. 2014. Recent advances on polymer‐stabilized blue phase liquid crystal materials and devices. Journal of Applied Polymer Science, 40556,1-10.
  • [6]. Rao, L., Wu, S. T. 2015. Low-voltage blue phase liquid crystal displays. Liquid Crystals Today, 24(1), 3-12.
  • [7]. Yan, J., Rao, L., Jiao, M., Li, Y., Cheng, H. C., Wu, S. T. 2011. Polymer-stabilized optically isotropic liquid crystals for next-generation display and photonics applications. Journal of Materials Chemistry, 21(22), 7870-7877.
  • [8]. Coles, H. J., Pivnenko, M. N. 2005. Liquid crystal ‘blue phases’ with a wide temperature range. Nature, 436(7053), 997-1000.
  • [9]. Yoshizawa, A., Kogawa, Y., Kobayashi, K., Takanishi, Y., Yamamoto, J. 2009. A binaphthyl derivative with a wide temperature range of a blue phase. Journal of Materials Chemistry, 19(32), 5759-5764. [10]. Taushanoff, S., Van Le, K., Williams, J., Twieg, R. J., Sadashiva, B. K., Takezoe, H., Jákli, A. 2010. Stable amorphous blue phase of bent-core nematic liquid crystals doped with a chiral material. Journal of Materials Chemistry, 20(28), 5893-5898.
  • [11]. Lee, M., Hur, S. T., Higuchi, H., Song, K., Choi, S. W., Kikuchi, H. 2010. Liquid crystalline blue phase I observed for a bent-core molecule and its electro-optical performance. Journal of Materials Chemistry, 20(28), 5813-5816.
  • [12]. Wang, H., Zheng, Z., Shen, D. 2012. Blue phase liquid crystals induced by bent-shaped molecules based on 1, 3, 4-oxadiazole derivatives. Liquid Crystals, 39(1), 99-103.
  • [13]. Yoshizawa, A., Sato, M., Rokunohe, J. 2005. A blue phase observed for a novel chiral compound possessing molecular biaxiality. Journal of Materials Chemistry, 15(32), 3285-3290.
  • [14]. Kikuchi, H., Yokota, M., Hisakado, Y., Yang, H., and Kajiyama, T. 2002. Polymer-stabilized liquid crystal blue phases. Nature materials, 1(1), 64-68.
  • [15]. Hisakado, Y., Kikuchi, H., Nagamura, T., Kajiyama, T. 2005. Large electro‐optic Kerr effect in polymer‐stabilized liquid‐crystalline blue phases. Advanced Materials, 17(1), 96-98.
  • [16]. Dierking, I., Blenkhorn, W., Credland, E., Drake, W., Kociuruba, R., Kayser, B., Michael, T. 2012. Stabilising liquid crystalline blue phases. Soft Matter, 8(16), 4355-4362.
  • [17]. Karatairi, E., Rožič, B., Kutnjak, Z., Tzitzios, V., Nounesis, G., Cordoyiannis, G., Thoen, J., Glorieux, C. Kralj, S. 2010. Nanoparticle-induced widening of the temperature range of liquid-crystalline blue phases. Physical Review E, 81(4), 041703.
  • [18]. Yoshida, H., Tanaka, Y., Kawamoto, K., Kubo, H., Tsuda, T., Fujii, A., Kuwabata, S., Kikuchi, H. Ozaki, M. 2009. Nanoparticle-stabilized cholesteric blue phases. Applied physics express, 2(12), 121501.
  • [19]. Wang, L., He, W., Xiao, X., Meng, F., Zhang, Y., Yang, P., Wang, L., Xiao, J., Yang, H. Lu, Y. 2012. Hysteresis‐Free Blue Phase Liquid‐Crystal‐Stabilized by ZnS Nanoparticles. small, 8(14), 2189-2193.
  • [20]. Stamatoiu, O., Mirzaei, J., Feng, X., Hegmann, T. 2011. Nanoparticles in liquid crystals and liquid crystalline nanoparticles. In Liquid Crystals (pp. 331-393). Springer Berlin Heidelberg.
  • [21]. Rao, L., Ge, Z., Gauza, S., Chen, K. M., Wu, S. T. 2010. Emerging liquid crystal displays based on the Kerr effect. Molecular Crystals and Liquid Crystals, 527(1), 30-42.
  • [22]. Li, B. X., Borshch, V., Shiyanovskii, S. V., Liu, S. B., Lavrentovich, O. D. 2015. Kerr effect at high electric field in the isotropic phase of mesogenic materials. Physical Review E, 92(5), 050501.
  • [23]. Yan, J., Cheng, H. C., Gauza, S., Li, Y., Jiao, M., Rao, L., Wu, S. T. 2010. Extended Kerr effect of polymer-stabilized blue-phase liquid crystals. Applied Physics Letters, 96(7), 071105.
  • [24]. E. Hecht, Optics, 2nd ed., Addison-Wesley Publishing Company, Reading, MA (1987). 318-320.
  • [25]. Avci, N. 2017. The influence of diluter system on polymer-stabilised blue-phase liquid crystals. Liquid Crystals, 1-9.
  • [26]. Rao, L., Yan, J., Wu, S. T., Yamamoto, S. I., Haseba, Y. 2011. A large Kerr constant polymer-stabilized blue phase liquid crystal. Applied Physics Letters, 98(8), 081109.
  • [27]. Chen, K. M., Gauza, S., Xianyu, H., Wu, S. T. 2010. Hysteresis effects in blue-phase liquid crystals. Journal of Display Technology, 6(8), 318-322.
  • [28]. Chen, Y., Xu, D., Wu, S. T., Yamamoto, S. I., and Haseba, Y. 2013. A low voltage and submillisecond-response polymer-stabilized blue phase liquid crystal. Applied Physics Letters, 102(14), 141116.
  • [29]. Chen, K. M., Gauza, S., Xianyu, H., Wu, S. T. 2010. Submillisecond gray-level response time of a polymer-stabilized blue-phase liquid crystal. Journal of display technology, 6(2), 49-51.
  • [30]. Choi, H., Higuchi, H., Kikuchi, H. 2011. Electrooptic response of liquid crystalline blue phases with different chiral pitches. Soft Matter, 7(9), 4252-4256.
  • [31]. Zhu, J. L., Ni, S. B., Chen, C. P., Song, X. L., Chen, C. Y., Lu, J. G., Su, Y. 2014. The influence of polymer system on polymer-stabilised blue phase liquid crystals. Liquid Crystals, 41(6), 891-896.
  • [32]. Xu, D., Yan, J., Yuan, J., Peng, F., Chen, Y., Wu, S. T. 2014. Electro-optic response of polymer-stabilized blue phase liquid crystals. Applied Physics Letters, 105(1), 011119.
  • [33]. Yan, J., Wu, S. T. 2011. Effect of polymer concentration and composition on blue phase liquid crystals. Journal of Display Technology, 7(9), 490-493.
  • [34]. Hsieh, P. J., Chen, H. M. P. 2015. Hysteresis-free polymer-stabilised blue phase liquid crystals comprising low surface tension monomers. Liquid Crystals, 42(2), 216-221.
Subjects Basic Sciences
Journal Section Natural Sciences
Authors

Author: Nejmettin AVCI

Bibtex @research article { csj349323, journal = {Cumhuriyet Science Journal}, issn = {2587-2680}, eissn = {2587-246X}, address = {Cumhuriyet University}, year = {2017}, volume = {38}, pages = {26 - 38}, doi = {10.17776/csj.349323}, title = {The Effect of Polymer Structures on Polymer Stabilized Blue Phase Liquid Crystals}, key = {cite}, author = {AVCI, Nejmettin} }
APA AVCI, N . (2017). The Effect of Polymer Structures on Polymer Stabilized Blue Phase Liquid Crystals. Cumhuriyet Science Journal, 38 (4), 26-38. DOI: 10.17776/csj.349323
MLA AVCI, N . "The Effect of Polymer Structures on Polymer Stabilized Blue Phase Liquid Crystals". Cumhuriyet Science Journal 38 (2017): 26-38 <http://dergipark.org.tr/csj/issue/32371/349323>
Chicago AVCI, N . "The Effect of Polymer Structures on Polymer Stabilized Blue Phase Liquid Crystals". Cumhuriyet Science Journal 38 (2017): 26-38
RIS TY - JOUR T1 - The Effect of Polymer Structures on Polymer Stabilized Blue Phase Liquid Crystals AU - Nejmettin AVCI Y1 - 2017 PY - 2017 N1 - doi: 10.17776/csj.349323 DO - 10.17776/csj.349323 T2 - Cumhuriyet Science Journal JF - Journal JO - JOR SP - 26 EP - 38 VL - 38 IS - 4 SN - 2587-2680-2587-246X M3 - doi: 10.17776/csj.349323 UR - https://doi.org/10.17776/csj.349323 Y2 - 2017 ER -
EndNote %0 Cumhuriyet Science Journal The Effect of Polymer Structures on Polymer Stabilized Blue Phase Liquid Crystals %A Nejmettin AVCI %T The Effect of Polymer Structures on Polymer Stabilized Blue Phase Liquid Crystals %D 2017 %J Cumhuriyet Science Journal %P 2587-2680-2587-246X %V 38 %N 4 %R doi: 10.17776/csj.349323 %U 10.17776/csj.349323
ISNAD AVCI, Nejmettin . "The Effect of Polymer Structures on Polymer Stabilized Blue Phase Liquid Crystals". Cumhuriyet Science Journal 38 / 4 (December 2017): 26-38. https://doi.org/10.17776/csj.349323