Abstract
We 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.
| Original language | English |
|---|---|
| Pages (from-to) | 1257-1262 |
| Number of pages | 6 |
| Journal | ACS Macro Letters |
| Volume | 8 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 15 2019 |
Funding
This research was supported by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory managed by UT-Battelle, LLC, for the U.S. Department of Energy, and performed at SNS and CNMS, which are DOE Office of Science User Facilities operated by the Oak Ridge National Laboratory. Y.S. and T.E. are supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials and Science and Engineering Division. Access to NGB30mSANS was provided by the Center for High Resolution Neutron Scattering, a partnership between the National Institute of Standards and Technology and National Science Foundation under Agreement No. DMR-1508249. We gratefully appreciate the D22 SANS beamtime from ILL.*%blankline%* This research was supported by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy, and performed at SNS and CNMS, which are DOE Office of Science User Facilities operated by the Oak Ridge National Laboratory. Y.S. and T.E. are supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials and Science and Engineering Division. Access to NGB30mSANS was provided by the Center for High Resolution Neutron Scattering, a partnership between the National Institute of Standards and Technology and National Science Foundation under Agreement No. DMR-1508249. We gratefully appreciate the D22 SANS beamtime from ILL.