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Orientational Distribution Function of Aligned Elongated Molecules and Particulates Determined from Their Scattering Signature
journal contribution
posted on 2019-09-17, 11:35 authored by Guan-Rong Huang, Yangyang Wang, Changwoo Do, Yuya Shinohara, Takeshi Egami, Lionel Porcar, Yun Liu, Wei-Ren ChenWe present a strategy
for quantitatively evaluating the field-induced
alignment of nonspherical particles using small-angle scattering techniques.
The orientational distribution function (ODF) is determined from the
anisotropic scattering intensity via the scheme of real spherical
harmonic expansion. Our developed approach is simple and analytical
and does not require a presumptive hypothesis of the ODF as an input
in data analysis. A model study of aligned rigid rods demonstrates
the validity of this proposed approach to facilitate the quantitative
structural characterization of materials with preferred orientational
states.
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Scattering Signaturecharacterizationintensitydata analysisfield-induced alignmentParticulatematerialtechniquestrategynonspherical particlesanisotropicapproachAligned Elongated Moleculesorientational statesmodel studyOrientational Distribution Functionvalidityschemepresumptive hypothesisorientational distribution functionODFsmall-angle
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