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Angular super-resolution retrieval in small-angle X-ray scattering.

ABSTRACT: Small-angle X-ray scattering (SAXS) techniques enable convenient nanoscopic characterization for various systems and conditions. Unlike synchrotron-based setups, lab-based SAXS systems intrinsically suffer from lower X-ray flux and limited angular resolution. Here, we develop a two-step retrieval methodology to enhance the angular resolution for given experimental conditions. Using minute hardware additions, we show that translating the X-ray detector in subpixel steps and modifying the incoming beam shape results in a set of 2D scattering images, which is sufficient for super-resolution SAXS retrieval. The technique is verified experimentally to show superior resolution. Such advantages have a direct impact on the ability to resolve finer nanoscopic structures and can be implemented in most existing SAXS apparatuses both using synchrotron- and laboratory-based sources.

SUBMITTER: Gutman B

PROVIDER: S-EPMC7525553 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Angular super-resolution retrieval in small-angle X-ray scattering.

Gutman Benjamin B Mrejen Michael M Shabat Gil G Avinery Ram R Shkolnisky Yoel Y Beck Roy R

Scientific reports 20200929 1

Small-angle X-ray scattering (SAXS) techniques enable convenient nanoscopic characterization for various systems and conditions. Unlike synchrotron-based setups, lab-based SAXS systems intrinsically suffer from lower X-ray flux and limited angular resolution. Here, we develop a two-step retrieval methodology to enhance the angular resolution for given experimental conditions. Using minute hardware additions, we show that translating the X-ray detector in subpixel steps and modifying the incoming ...[more]

PMID: 32994517

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