In situ SAXS measurement and molecular dynamics simulation of magnetic alignment of hexagonal LLC nanostructures

Weiwei Cong, Weimin Gao, Christopher J. Garvey, Ludovic F. Dumée, Juan Zhang, Ben Kent, Guang Wang, Fenghua She, Lingxue Kong

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The alignment of nanostructures in materials such as lyotropic liquid crystal (LLC) templated materials has the potential to significantly improve their performances. However, accurately characterising and quantifying the alignment of such fine structures remains very challenging. In situ small angle X-ray scattering (SAXS) and molecular dynamics were employed for the first time to understand the hexagonal LLC alignment process with magnetic nanoparticles under a magnetic field. The enhanced alignment has been illustrated from the distribution of azimuthal intensity in the samples exposed to magnetic field. Molecular dynamics simulations reveal the relationship between the imposed force of the magnetic nanoparticles under magnetic field and the force transferred to the LLC cylinders which leads to the LLC alignment. The combinational study with experimental measurement and computational simulation will enable the development and control of nanostructures in novel materials for various applications.

Original languageBritish English
Article number123
JournalMembranes
Volume8
Issue number4
DOIs
StatePublished - 1 Jan 2018

Keywords

  • Alignment
  • Hexagonal
  • In situ small angle X-ray scattering (SAXS)
  • Lyotropic liquid crystals
  • Magnetic field
  • Nanofiltration

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