Abstract
We investigated the temperature dependences of the dielectric anisotropy, birefringence, order parameter, splay elastic constant, and rotational viscosity of rodlike nematic liquid crystals (RLCs) doped with hockey-stick-shaped liquid crystals (HLCs). Although the order parameter of the HLC-RLC mixtures was similar to that of the pure RLC, the dielectric anisotropy and the birefringence of the mixtures were decreased or increased depending on the structure of the HLC molecule. In addition, the activation energies of the mixtures were different, which implies that the intramolecular structure of the HLC molecule had more influence on the electrooptical properties of the HLC-RLC binary mixtures than the inter-molecular interaction between the HLC and the RLC molecules.
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B. Kundu, R. Pratibha and N. V. Madhusudana, Phys. Rev. Lett. 99, 247802 (2007).
P. Sathyanarayana and S. Dhara, Phys. Rev. E 87, 012506 (2013).
J.-H. Lee, T.-H. Yoon and E.-J. Choi, Phys. Rev. E 88, 062511 (2013).
B. Kundu, A. Roy, R. Pratibha and N. V. Madhusudana, Appl. Phys. Lett. 95, 081902 (2009).
J.-H. Lee, T.-H. Yoon and E.-J. Choi, Soft Matter 8, 2370 (2012).
H. J. Coles, M. J. Clarke, S. M. Morris, B. J. Broughton and A. E. Blatch, J. Appl. Phys. 99, 034104 (2006).
F. Castles, S. M. Morris and H. J. Coles, AIP Adv. 1, 032120 (2011).
F. Castles, S. C. Green, D. J. Gardiner, S. M. Morris and H. J. Coles, AIP Adv. 2, 022137 (2012).
P. Sathyanarayana, S. Radhika, B. K. Sadashiva and S. Dhara, Soft Matter 8, 2322 (2012).
N. Avci, V. Borshch, D. D. Sarkar, R. Deb, G. Venkatesh, T. Turiv, S. V. Shiyanovskii, N. V. S. Rao and O. D. Lavrentovich, Soft Matter 9, 1066 (2013).
A. Chakrabory, B. Das, M. D. Das, S. Findeisen-Tandel, M.-G. Tamba, U. Baumeister, H. Kresse and W. Weissflog, Liq. Cryst. 38, 1085 (2011).
A. Chakraborty, M. K. Das, B. Das, U. Baumeister and W. Weissflog, J. Mater. Chem. C 1, 7418 (2013).
B. Das, S. Grande, W. Weissflog, A. Eremin, M. W. Schroder, G. Pelzl, S. Diele and H. Kresse, Liq. Cryst. 30, 529 (2003).
K. M. Fergusson and M. Hird, J. Mater. Chem. 20, 3069 (2010).
E.-J. Choi, K.-M. Park, D.-Y. Kim, K.-U. Jeong and J.-H. Lee, Soft Matter, submitted in 2015.
G. Barbero and L. R. Evangelista, An Elementary Course on the Continuum Theory for Nematic Liquid Crystals (World Scientific, Singapore, 2000).
I. Haller, Prog. Solid State Chem. 10, 103 (1975).
M. Miesowicz, Nature 158, 27 (1946).
S.-T. Wu and C.-S. Wu, Phys. Rev. A 42, 2219 (1990).
L. Rao, S. Gauza and S.-T. Wu, Appl. Phys. Lett. 94, 071112 (2009).
H. Chen, M. Hu, F. Peng, J. Li, Z. An and S.-T. Wu, Opt. Mater. Express 5, 655 (2015).
M. A. Osipov and E. M. Terentjev, Z. Naturforsch. Teil A 44, 785 (1989).
W. H. De Jeu, Mol. Cryst. Liq. Cryst. 63, 83 (1981).
M. L. Dark, M. H. Moore, D. K. Shenoy and R. Shashidhar, Liq. Cryst. 33, 67 (2006).
D. Pauluth and K. Tarumi, J. Mater. Chem. 14, 1219 (2004).
K. Tarumi, M. Bremer and T. Geelhaar, Annu. Rev. Mater. Sci. 27, 423 (1997).
P. Sathyanarayana, T. A. Kumar, V. S. S. Sastry, M. Mathews, Q. Li, H. Takezoe and S. Dhara, Appl. Phys. Exp. 3, 091702 (2010).
P. Sathyanarayana, B. K. Sadashiva and S. Dhara, Soft Matter 7, 8556 (2011).
P. Sathyanarayana, V. S. R. Jampani, M. Skarabot, I. Musevic, K. V. Le, H. Takezoe and S. Dhara, Phys. Rev. E 85, 011702 (2012).
A. Chakraboty, M. K. Das, B. Das, A. Lehmann and C. Tschierske, Soft Matter 9, 4273 (2013).
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Yeo, S., Srivastava, A.K., Lee, H. et al. Temperature dependences of the electrooptical properties of rodlike nematic liquid crystals doped with hockey-stick-shaped liquid crystals. Journal of the Korean Physical Society 68, 264–267 (2016). https://doi.org/10.3938/jkps.68.264
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DOI: https://doi.org/10.3938/jkps.68.264