Nonadditive changes in conductivity of micro PDLC under the influence of carbon nanotubes and magnetic nanoparticles

• Veröffentlicht in: Semiconductor Physics Quantum Electronics & Optoelectronics
• Datum: 2013
• ISSN: 1560-8034
• Hauptverfasser: Kopčansky, P., Timko, M., Mitrova, Z., Zavisova, V., Koneracka, M., Tomašovičova, N., Tomčo, L., Kovalchuk, O.V., Bykov, V.M., Kovalchuk, T.M.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2013
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/117811
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Nonadditive changes in conductivity of micro PDLC
 under the influence of carbon nanotubes and magnetic nanoparticles / P. Kopcansky, M. Timko, Z. Mitrova, V. Zavisova, M. Koneracka, N. Tomasovicova, L. Tomco, O.V. Kovalchuk, V.M. Bykov, T.M. Kovalchuk // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2013. — Т. 16, № 4. — С. 374-378. — Бібліогр.: 12 назв. — англ.

Investigated in this work has been the effect of impurities – magnetic
 nanoparticles (MN) and multiwall carbon nanotubes (MWNT) – separately and together
 on morphology and dielectric properties of nematic liquid crystal 6CHBT dispersed in
 polyvinyl alcohol (PDLC). It has been shown that the nanoparticles and nanotubes
 together change the morphology of PDLC practically in the same manner as every type
 of impurity singly. The impurities influence also additively on the permittivity at low
 frequencies and electron component of the conductivity in the polymer matrix. We have
 found that when MN and MWNT act jointly their ion component of the conductivity
 exceeds the total changes in conductivity by six times greater than when each type of
 impurity acts singly. The most probable reason for this nonadditive change in
 conductivity can be aggregation of these nanoparticles.