Advertisement

Journal of Materials Science

, Volume 46, Issue 18, pp 5969–5976 | Cite as

Dielectric and electro-optical study of ZnO nano rods doped ferroelectric liquid crystals

  • Rajiv ManoharEmail author
  • A. K. Srivastava
  • Pankaj K. Tripathi
  • Dharmendra P. Singh
Article

Abstract

Addition of Nano rods results change in the dielectric and electro-optical properties of pure Ferroelectric Liquid Crystal (FLC) considerably. The present study is devoted to characterize the dielectric and electro-optical parameters of the FLC nano rods composite system. The size of nano rods is usually much bigger than that of FLC molecules, therefore, when they are doped in different concentrations, in pure FLC, their volume fraction plays considerable role in deciding the molecular dynamics of the resultant composite system. For the lesser concentrations, the nano rods offer mechanical strength to system geometry while at higher concentration of nano rods, they offer additional constraints on the system. In present report both of these aspects have been analyzed and explained.

Keywords

Dielectric Permittivity Spontaneous Polarization Relaxation Frequency Goldstone Mode Smectic Layer 

Notes

Acknowledgements

The authors are thankful to Department of Science and Technology, Government of India and Indian Space Research Organization for the financial assistance for present work in the form of project.

References

  1. 1.
    Meyer RB, Liebert L, Strzelecki L, Keller P (1975) J Phys Lett 36:69CrossRefGoogle Scholar
  2. 2.
    Takeda M, Kitazume T, Koden M (1995) J Mater Sci 30:5199. doi: https://doi.org/10.1007/BF00356070 CrossRefGoogle Scholar
  3. 3.
    Maltese P (1992) Mol Cryst Liq Cryst 215:57CrossRefGoogle Scholar
  4. 4.
    Rieker TP, Clark NA, Smith GS, Parmar DS (1987) Phys Rev Lett 59:2658CrossRefGoogle Scholar
  5. 5.
    Seki H, Uchida T, Shibata Y (1986) Mol Cryst Liq Cryst 138:349CrossRefGoogle Scholar
  6. 6.
    Kondo K, Era S, Isogai M, Mukoh A (1985) Jpn J Appl Phys 24:1389CrossRefGoogle Scholar
  7. 7.
    Kondo K, Roy SS, Majumder TP, Roy SK (1988) Ferroelectrics 85:361CrossRefGoogle Scholar
  8. 8.
    Srivastava AK, Misra AK, Chand PB, Manohar R, Shukla JP (2008) Mol Cryst Liq Cryst 495:194CrossRefGoogle Scholar
  9. 9.
    Keshari AK, Kumar M, Singh PK, Pandey J (2008) Nano Sci 8:1221Google Scholar
  10. 10.
    Kumar A, Prakash J, Mehta DS, Biradar AM, Haase W (2009) Appl Phys Lett 95:023117-1CrossRefGoogle Scholar
  11. 11.
    Van der Schoot P, Popa Nita V, Kralj S (2008) J Phys Chem B 112:4512CrossRefGoogle Scholar
  12. 12.
    Manohar R, Misra AK, Srivastava AK, Chand PB, Shukla JP (2007) Soft Mater 5(4):207CrossRefGoogle Scholar
  13. 13.
    Srivastava AK, Misra AK, Chand PB, Manohar R, Shukla JP (2007) Phys Lett A 371:490CrossRefGoogle Scholar
  14. 14.
    Kondo K, Roy SS, Majumder TP, Roy SK (2000) Ferroelectrics 243:197CrossRefGoogle Scholar
  15. 15.
    Srivastava AK (2008) PhD thesis, University of LucknowGoogle Scholar
  16. 16.
    Buivydas M, Gouda F, Lagerwall ST (2000) J Mater Sci 35:5457. doi: https://doi.org/10.1023/A:1004821012656 CrossRefGoogle Scholar
  17. 17.
    Gathania AK, Singh B, Raina KK (1999) Indian J Pure Appl Phys 37:657Google Scholar
  18. 18.
    Srivastava AK, Manohar R, Shukla JP, Biradar AM (2007) Jpn J Appl Phys 46:1100CrossRefGoogle Scholar
  19. 19.
    Ezcurra A, Jubindo MAP, Fuente MRD, Etxebarria J, Remon A, Tello MJ (1989) Liq Cryst 4:125CrossRefGoogle Scholar
  20. 20.
    Maeda M, Kihara H, Makino A, Suzuki I (1998) Jpn J Appl Phys 37:6465CrossRefGoogle Scholar
  21. 21.
    Filipic C, Carlsson T, Levstik A, Zeks B, Blinc R, Gouda F, Lagerwall ST, Skarp K (1988) Phys Rev A 38:5833CrossRefGoogle Scholar
  22. 22.
    Gauda F, Skarp KS, Lagerwall ST (1991) Ferroelectrics 113:165CrossRefGoogle Scholar
  23. 23.
    Miyata H, Maede M, Suzuki I (1996) Liq Cryst 20:303CrossRefGoogle Scholar
  24. 24.
    Bahr C (2001) Chirality in liquid crystals. Springer-Verlag Publishing, New York, Chapter 8Google Scholar
  25. 25.
    Levstik A, Carlsson T, Filipic C, Levstik I, Zeks B (1987) Phys Rev A 35:3527CrossRefGoogle Scholar
  26. 26.
    Panarin YuP, Kalmykov YuP, Laughadha STM, Xu H, Vij JK (1994) Phys Rev E 50:4763CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Rajiv Manohar
    • 1
    Email author
  • A. K. Srivastava
    • 1
  • Pankaj K. Tripathi
    • 1
  • Dharmendra P. Singh
    • 1
  1. 1.Liquid Crystal Research Laboratory, Physics DepartmentUniversity of LucknowLucknowIndia

Personalised recommendations