Multi-element X-ray movie imaging with a visible-light CMOS camera

Area of Science:

• Materials Science
• Analytical Chemistry
• Chemical Physics

Background:

• X-ray movies offer valuable insights into chemical reactions.
• Simultaneous multi-element X-ray imaging is crucial for understanding element behavior and interactions.

Purpose of the Study:

• To present a straightforward method for multi-element X-ray movie imaging.
• To demonstrate the capability of a complementary metal-oxide semiconductor (CMOS) camera for X-ray fluorescence spectroscopy.
• To establish a cost-efficient setup for visualizing chemical diffusion.

Main Methods:

• Utilizing a synchrotron facility with a micro-pinhole placed in front of a specially operated visible-light CMOS camera.
• Achieving high spatial resolution for X-ray fluorescence spectra.
• Recording X-ray movies with specific frame acquisition times and spatial resolutions.

Main Results:

• Demonstrated the ability of a CMOS camera to resolve X-ray fluorescence spectra.
• Achieved a spatial resolution of approximately 15 µm.
• Simultaneously obtained X-ray movie frames with a 2-minute acquisition time and ~50 µm spatial resolution.

Conclusions:

• A CMOS camera provides a cost-efficient solution for researchers needing to visualize chemical diffusion.
• The developed method simplifies the setup for multi-element X-ray movie imaging.
• This technique facilitates the study of element interactions in various chemical reactions.