We present a computational imaging technique for imaging thin films at grazing-incidence (GI) angles by incorporating structured illumination into existing GI X-ray scattering setups. This method involves scanning a micro-coded aperture across the incident X-ray beam at a grazing angle, followed by computational reconstruction to extract localized structural and scattering information along the beam footprint on the sample. Unlike conventional GI X-ray scattering methods, which provide only averaged structural data, our approach offers localized scattering information. We detail the underlying principles of this technique and demonstrate its effectiveness through experimental results on an organic semiconductor thin film.
@article{arxiv.2505.04803,
title = {Structured Illumination for Surface-Resolved Grazing-Incidence X-ray Scattering},
author = {Doga Gursoy and Xiaogang Yang and Dina Sheyfer and Michael Wojcik and Ruipeng Li and Esther Tsai},
journal= {arXiv preprint arXiv:2505.04803},
year = {2025}
}