X-Ray Multibeam Ptychography at up to 20 keV: Nano-Lithography Enhances X-Ray Nano-Imaging

Area of Science:

• Materials Science
• Nanotechnology
• Synchrotron Radiation

Background:

• Hard X-rays are crucial for non-destructive nano-imaging of solid matter.
• Synchrotron radiation facilities (SRF) offer high-resolution imaging via X-ray ptychography, but are limited by coherent flux.
• Current limitations restrict resolution or field of view, hindering the study of large or complex samples.

Purpose of the Study:

• To overcome the limitations of conventional X-ray ptychography for imaging extended samples.
• To develop a method for performing multibeam ptychography (MBP) at high energies with multiple parallel beams.
• To enhance the capabilities of nano-imaging for complex materials like catalysts and electronic devices.

Main Methods:

• Developed a lens array using advanced laser printing technology.
• Implemented X-ray multibeam ptychography (MBP) with up to 12 parallel beams.
• Conducted experiments at high photon energies (13 and 20 keV) to minimize beam attenuation.

Main Results:

• Successfully performed scanning with MBP, exceeding conventional hard X-ray ptychography limits.
• Achieved high-quality nano-imaging for diverse samples including test patterns, catalysts, microchips, and nano-crystal clusters.
• Demonstrated the effectiveness of MBP in expanding the field of view and measurement speed without compromising image quality.

Conclusions:

• The novel lens array and MBP approach effectively overcome challenges in high-energy, multi-beam ptychography.
• This advancement enables detailed nano-imaging of larger and more complex samples than previously possible.
• The technique holds significant promise for advancing research in materials science, catalysis, and electronics.