• 文献标题:   Nonlinear optical response of liquid crystalline matrix doped with single walled carbon nanotube and graphene sheets
  • 文献类型:   Article
  • 作  者:   NASERBAKHT S, MALEKI A, MOHAJER S, HESARI K, MAJLESARA MH, SHABAN Z
  • 作者关键词:   liquid crystal, zscan technique, nanotube, graphene
  • 出版物名称:   JOURNAL OF MOLECULAR LIQUIDS
  • ISSN:   0167-7322 EI 1873-3166
  • 通讯作者地址:   Kharazmi Univ
  • 被引频次:   1
  • DOI:   10.1016/j.molliq.2016.07.080
  • 出版年:   2016

▎ 摘  要

In this work, the nonlinear optical characterization of single-walled carbon nanotubes (SWCN) and graphene in guest-host liquid crystal system have been investigated using z-scan technique and far-field diffraction patterns. The guest materials have been dispersed in 80 smectic liquid crystal at different concentration and specific thermal conditions. Z-scan measurements with continuous wave (CW) He:Ne laser beam at 632.8 nm have been used for determining the nonlinear refractive index (n(2)) of guest-host system. It was found that n(2) depends substantially on the concentration of the SWCN and graphene layers doped in SLCs, and it led to a significant growth in the nonlinear refractive index. Furthermore, the results of far-field optical diffraction patterns under CW He-Ne laser illumination have been verified the result of nonlinear properties of Z-scan measurements. (C) 2016 Published by Elsevier B.V.