Dielectric Properties of Nematic Liquid Crystal Modified with Diamond Nanoparticles

Authors

  • S. Tomylko Institute of Physics, Nat. Acad. of Sci. of Ukraine
  • O. Yaroshchuk Institute of Physics, Nat. Acad. of Sci. of Ukraine
  • O. Kovalchuk Institute of Physics, Nat. Acad. of Sci. of Ukraine
  • U. Maschke Universite des Sciences et Technologies de Lille
  • R. Yamaguchi Akita University

DOI:

https://doi.org/10.15407/ujpe57.2.239

Keywords:

-

Abstract

In the present study, the influence of diamond nanoparticles (DNPs) on dielectric properties of nematic liquid crystal (LC) E7 from Merck has been considered. It is established that the insertion of DNPs leads to an increase in the dielectric constant ε', as well as to a significant change in the electric conductivity σ of the LC. The growth of ε' with the concentration of DNPs, CDNP, is mainly caused by a contribution of the DNP permittivity to the effective permittivity of the composite. The character of the σ(CDNP) curves depends on the ionic purity of LC E7: for the samples based on pure E7, an increase of the electric conductivity with the concentration of DNPs is detected, whereas the reverse trend is observed for the samples containing impure E7. This behavior is attributed to the competitive adsorption and desorption of ions on/from the surface of DNPs and the ion transfer along the percolation network of these
particles.

References

S.-H. Chen and N.M. Amer, Phys. Rev. Lett. 51, 2298 (1983).

https://doi.org/10.1103/PhysRevLett.51.2298

F. Li, O. Buchnev, C.I. Cheon et al., Phys. Rev. Lett. 97, 147801 (2006).

G.Ya. Guba, Yu.A. Reznikov, N.Yu. Lopukhovich, V.M. Ogenko, V.Yu. Reshetnyak, and O.V. Yaroshchuk, Mol. Cryst. Liq. Cryst. 251, 303 (1994).

https://doi.org/10.1080/10587259408027213

T. Zhang, C. Zhong, and J. Xu, Jpn. J. Appl. Phys. 48, 055002 (2009).

https://doi.org/10.1143/JJAP.48.055002

Y. Shiraishi, N. Toshima, K. Maeda et al., Appl. Phys. Lett. 81, 2845 (2002).

https://doi.org/10.1063/1.1511282

L. Dolgov, S. Tomylko, O. Koval'chuk, N. Lebovka, and O. Yaroshchuk, in Carbon Nanotubes (In-Tech., Vukovar, Croatia, 2010). Available from: http://sciyo.com/books/show/title/carbon-nanotubes.

J. Lagerwall and G. Scalia, J. Mater. Chemistry 18, 2890 (2008).

https://doi.org/10.1039/b802707b

M. Rahman and W. Lee, J. Phys. D: Appl. Phys. 42, 063001 (2009).

https://doi.org/10.1088/0022-3727/42/6/063001

W. Lee, C.-Y. Wang, and Y.-C. Shih, Appl. Phys. Lett. 85, 513 (2004).

https://doi.org/10.1063/1.1771799

I.-S. Baik, S.Y. Jeon, S.H. Lee, K.A. Park, S.H Jeong, K.H. An, and Y.H. Lee, Appl. Phys. Lett. 87, 263110 (2005).

https://doi.org/10.1063/1.2158509

H.-Y. Chen and W. Lee, Appl. Phys. Lett. 88, 222105 (2006).

https://doi.org/10.1063/1.2208373

S.M. Gavrilkin, K.B. Poyarkov, B.V. Matseevich, and S.S. Batsanov, Inorg/ Mater/ 45, 980 (2009).

https://doi.org/10.1134/S0020168509090064

S. Tomylko, O. Yaroshchuk, O. Kovalchuk, U. Maschke, and R. Yamaguchi, Mol. Cryst. Liq. Cryst. 541, 273 (2011).

https://doi.org/10.1080/15421406.2011.569658

http://www.sigmaaldrich.com/catalog/ProductDetail.do? N4=636444|ALDRICH&N5=SEARCH CONCAT PNO|BRAND KEY&F=SPEC&lang=en US.

A.J. Twarowski and A.C. Albrecht, J. Chem. Phys. 20, 2255 (1979).

https://doi.org/10.1063/1.437729

A.V. Koval'chuk, Funct. Mater. 5, 426 (1998).

A. Sawada, K. Tarumi, and S. Naemura, Jpn. J. Appl. Phys. 38, 195 (1999).

https://doi.org/10.1143/JJAP.38.1423

L.M. Blinov and V.G. Chigrinov, Electrooptics Effects in Liquid Crystal Materials (Springer, New York, 1996).

http://en.wikipedia.org/wiki/Effective medium approximations.

Z. Chen, K.-S. Zhao, L. Guo, and C.-H. Feng, J. Chem. Phys. 126, 164505 (2007).

https://doi.org/10.1063/1.2721561

Ta.-I. Yang and P. Kofinas, Polymer 48, 791 (2007).

https://doi.org/10.1016/j.polymer.2006.12.030

E. Ouskova, O. Buchnev, V. Reshetnyak, Yu. Reznikov, and H. Kresse, Liq. Cryst. 30, 1235 (2003).

https://doi.org/10.1080/02678290310001601996

A. Sawada, K. Tarumi, and S. Naemura, Jpn. J. Appl. Phys. 41, 195 (2002).

https://doi.org/10.1143/JJAP.41.L195

S. Murakami and H. Naito, Jpn. J. Appl. Phys. 36, 2222 (1999).

https://doi.org/10.1143/JJAP.36.2222

H-Y. Chen and W. Lee, Appl. Phys. Lett. 88, 222105 (2006).

https://doi.org/10.1063/1.2208373

H. Liu and W. Lee, Appl. Phys. Lett. 97, 023510 (2010). https://doi.org/10.1063/1.3464564

Downloads

Published

2012-02-15

How to Cite

Tomylko, S., Yaroshchuk, O., Kovalchuk, O., Maschke, U., & Yamaguchi, R. (2012). Dielectric Properties of Nematic Liquid Crystal Modified with Diamond Nanoparticles. Ukrainian Journal of Physics, 57(2), 239. https://doi.org/10.15407/ujpe57.2.239

Issue

Vol. 57 No. 2 (2012)

Section

Atoms and molecules

License

Copyright Agreement
License to Publish the Paper
Kyiv, Ukraine

The corresponding author and the co-authors (hereon referred to as the Author(s)) of the paper being submitted to the Ukrainian Journal of Physics (hereon referred to as the Paper) from one side and the Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, represented by its Director (hereon referred to as the Publisher) from the other side have come to the following Agreement:

1. Subject of the Agreement.
The Author(s) grant(s) the Publisher the free non-exclusive right to use the Paper (of scientific, technical, or any other content) according to the terms and conditions defined by this Agreement.

2. The ways of using the Paper.
2.1. The Author(s) grant(s) the Publisher the right to use the Paper as follows.
2.1.1. To publish the Paper in the Ukrainian Journal of Physics (hereon referred to as the Journal) in original language and translated into English (the copy of the Paper approved by the Author(s) and the Publisher and accepted for publication is a constitutive part of this License Agreement).
2.1.2. To edit, adapt, and correct the Paper by approval of the Author(s).
2.1.3. To translate the Paper in the case when the Paper is written in a language different from that adopted in the Journal.
2.2. If the Author(s) has(ve) an intent to use the Paper in any other way, e.g., to publish the translated version of the Paper (except for the case defined by Section 2.1.3 of this Agreement), to post the full Paper or any its part on the web, to publish the Paper in any other editions, to include the Paper or any its part in other collections, anthologies, encyclopaedias, etc., the Author(s) should get a written permission from the Publisher.

3. License territory.
The Author(s) grant(s) the Publisher the right to use the Paper as regulated by sections 2.1.1–2.1.3 of this Agreement on the territory of Ukraine and to distribute the Paper as indispensable part of the Journal on the territory of Ukraine and other countries by means of subscription, sales, and free transfer to a third party.

4. Duration.
4.1. This Agreement is valid starting from the date of signature and acts for the entire period of the existence of the Journal.

5. Loyalty.
5.1. The Author(s) warrant(s) the Publisher that:
– he/she is the true author (co-author) of the Paper;
– copyright on the Paper was not transferred to any other party;
– the Paper has never been published before and will not be published in any other media before it is published by the Publisher (see also section 2.2);
– the Author(s) do(es) not violate any intellectual property right of other parties. If the Paper includes some materials of other parties, except for citations whose length is regulated by the scientific, informational, or critical character of the Paper, the use of such materials is in compliance with the regulations of the international law and the law of Ukraine.

6. Requisites and signatures of the Parties.
Publisher: Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine.
Address: Ukraine, Kyiv, Metrolohichna Str. 14-b.
Author: Electronic signature on behalf and with endorsement of all co-authors.

Crossref
Scopus
Google Scholar
Europe PMC