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Pushing the temporal resolution in absorption and Zernike phase contrast nanotomography: enabling fast in situ experiments

DOI: 10.1107/S1600577520007407 DOI Help

Authors: Silja Flenner (Helmholtz-Zentrum Geesthacht) , Malte Storm (Diamond Light Source) , Adam Kubec (Paul Scherrer Institut) , Elena Longo (Helmholtz-Zentrum Geesthacht) , Florian Doring (Paul Scherrer Institute) , Daniël M. Pelt (Centrum Wiskunde and Informatica) , Christian David (Paul Scherrer Institute) , Martin Müller (Helmholtz-Zentrum Geesthacht) , Imke Greving (Helmholtz-Zentrum Geesthacht)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Synchrotron Radiation , VOL 27 , PAGES 1339 - 1346

State: Published (Approved)
Published: September 2020

Open Access Open Access

Abstract: Hard X-ray nanotomography enables 3D investigations of a wide range of samples with high resolution (<100 nm) with both synchrotron-based and laboratory-based setups. However, the advantage of synchrotron-based setups is the high flux, enabling time resolution, which cannot be achieved at laboratory sources. Here, the nanotomography setup at the imaging beamline P05 at PETRA III is presented, which offers high time resolution not only in absorption but for the first time also in Zernike phase contrast. Two test samples are used to evaluate the image quality in both contrast modalities based on the quantitative analysis of contrast-to-noise ratio (CNR) and spatial resolution. High-quality scans can be recorded in 15 min and fast scans down to 3 min are also possible without significant loss of image quality. At scan times well below 3 min, the CNR values decrease significantly and classical image-filtering techniques reach their limitation. A machine-learning approach shows promising results, enabling acquisition of a full tomography in only 6 s. Overall, the transmission X-ray microscopy instrument offers high temporal resolution in absorption and Zernike phase contrast, enabling in situ experiments at the beamline.

Journal Keywords: nanotomography; full-field X-ray microscopy; in situ experiments; image quality; time resolution; Zernike phase contrast

Subject Areas: Technique Development, Physics

Facility: Beamiline P05 at PETRA III at DESY