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Membranes 2018, 8(4), 123; https://doi.org/10.3390/membranes8040123

In Situ SAXS Measurement and Molecular Dynamics Simulation of Magnetic Alignment of Hexagonal LLC Nanostructures

1
Institute for Frontier Materials, Deakin University, Geelong, Locked Bag 20000, Geelong, VIC 3220, Australia
2
College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063009, China
3
Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, NSW 2232, Australia
4
Institute for Soft Matter and Functional Materials, Helmholtz Zentrum Berlin, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany
*
Author to whom correspondence should be addressed.
Received: 5 October 2018 / Revised: 8 November 2018 / Accepted: 27 November 2018 / Published: 2 December 2018
(This article belongs to the Special Issue Nanostructured Membranes)
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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. View Full-Text
Keywords: alignment; magnetic field; hexagonal; lyotropic liquid crystals; nanofiltration; in situ small angle X-ray scattering (SAXS) alignment; magnetic field; hexagonal; lyotropic liquid crystals; nanofiltration; in situ small angle X-ray scattering (SAXS)
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Cong, W.; Gao, W.; Garvey, C.J.; Dumée, L.F.; Zhang, J.; Kent, B.; Wang, G.; She, F.; Kong, L. In Situ SAXS Measurement and Molecular Dynamics Simulation of Magnetic Alignment of Hexagonal LLC Nanostructures. Membranes 2018, 8, 123.

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