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Related Experiment Video

Updated: May 2, 2026

Non-invasive 3D-Visualization with Sub-micron Resolution Using Synchrotron-X-ray-tomography
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Soft X-ray microscopy at a spatial resolution better than 15 nm.

Weilun Chao1, Bruce D Harteneck, J Alexander Liddle

  • 1Center for X-ray Optics, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 2-400, Berkeley, California 94720, USA.

Nature
|July 1, 2005
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Summary

High-resolution soft X-ray microscopy achieves sub-15-nm spatial resolution, enabling elemental and chemical identification at the nanoscale. This advancement is crucial for diverse applications in life and physical sciences.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Physics

Background:

  • Nanoscale analytical tools are essential for life and physical sciences.
  • Current techniques often lack the desired spatial resolution, elemental identification, and penetration depth.

Purpose of the Study:

  • To develop an X-ray microscopy technique with sub-15-nm spatial resolution.
  • To enable elemental and chemical identification at the nanoscale with large penetration depths.

Main Methods:

  • Utilized an overlay technique for zone plate fabrication in a soft X-ray microscope.
  • Operated the microscope across a spectral range of 250 eV to 1.8 keV.

Main Results:

  • Achieved sub-15-nm spatial resolution, with a clear path to below 10 nm.
  • Probed primary K and L atomic resonances of elements like C, N, O, Al, Ti, Fe, Co, and Ni.
  • Demonstrated suitability for imaging biological samples, magnetic nanostructures, and buried electronic devices.

Conclusions:

  • The developed soft X-ray microscopy technique offers unprecedented nanoscale analytical capabilities.
  • This technique opens new avenues for high-resolution imaging and elemental analysis across various scientific disciplines.