Diffraction from twisted nanowires: helicity revealed by anisotropy

Abstract : The helical nature of twisted nanowires is studied by simulated X-ray diffraction. It is shown that this helicity is revealed by the anisotropy, which can be both an elastic anisotropy, through the warping displacement generated by torsion, or a shape anisotropy of the cross section. To support the analytical calculations, based on the kinematic theory of diffraction by helices, atomistic simulations of copper nanowires are performed.
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Submitted on : Friday, November 16, 2018 - 2:24:11 PM
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Marc Gailhanou, Jean-Marc Roussel. Diffraction from twisted nanowires: helicity revealed by anisotropy. Journal of Applied Crystallography, International Union of Crystallography, 2018, 51 (6), ⟨10.1107/s1600576718013493⟩. ⟨hal-01925048⟩

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