Coherent X-ray imaging: bridging the gap between atomic and micro-scale investigations
Marco Stampanoni1, Andreas Menzel2, Ben Watts2
1Paul Scherrer Institute CH-5232 Villigen-PSI, Switzerland; Institute for Biomedical Engineering ETH and University of Zurich Gloriastrasse 35, CH-8092 Zürich, Switzerland. stampanoni@biomed.ee.ethz.ch.
Chimia
|May 8, 2014
Summary
State-of-the-art X-ray imaging techniques using synchrotron radiation offer high-resolution structural analysis. These methods, including tomography and ptychography, reveal details in biological samples, foams, and cement.
Area of Science:
- Physics
- Materials Science
- Biophysics
Background:
- Synchrotron radiation provides a powerful source for advanced X-ray imaging.
- Partially coherent beams enable high-resolution structural analysis.
- Existing techniques have limitations in resolution and contrast.
Purpose of the Study:
- To review state-of-the-art X-ray imaging techniques utilizing partially coherent synchrotron radiation.
- To highlight the capabilities of these advanced imaging methods.
- To demonstrate their diverse applications across scientific disciplines.
Main Methods:
- Full-field X-ray tomography
- X-ray ptychography
- Scanning small-angle X-ray scattering (SAXS)
- Scanning transmission X-ray microscopy (STXM)
Main Results:
- These techniques achieve spatial resolutions from microns to tens of nanometers.
- They provide structural information in both real- and reciprocal space.
- Contrast mechanisms include absorption, phase, and spectroscopic signals.
Conclusions:
- Advanced X-ray imaging techniques offer versatile tools for nanoscale structural determination.
- Applications span biological imaging, material science (foam rheology), and geological studies (cement composition).
- These methods push the boundaries of structural analysis in various scientific fields.
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