Researchers Developed Ghost Tomography for 3D Mapping
A new X-ray technique significantly reduces measurement time and sample radiation exposure.
Updated on Oct. 5, 2026 in Materials Science
Scientists have developed a ghost tomography method that uses structured X-ray illumination to enable 3D elemental mapping. This approach drastically minimizes the number of required measurements compared to traditional techniques.
Why it matters
Conventional raster scanning is often slow and can inflict radiation damage on samples. This new method accelerates data acquisition while preserving delicate materials.
The new technique utilizes a tungsten powder mask to achieve a spatial resolution of 20-30 µm across a 3D map containing 2.8 million voxels. By utilizing structured illumination, researchers successfully reduced the necessary measurements 43-fold.
The details
The experimental setup at beamline ID19 involved rotating a sample containing copper wires, zirconium sheets, and silver particles through 360 degrees. A silicon drift detector collected fluorescent signals globally, while a mask of tungsten powder modulated the broad X-ray beam into structured patterns.
Timeline
The findings were published on October 5, 2026.
The Big Picture
This development represents a departure from traditional raster scanning by leveraging ghost imaging principles for elemental analysis. It shifts the paradigm of volumetric reconstruction by prioritizing algorithmic efficiency over physical scanning motion.
This breakthrough could lead to faster and safer analysis of complex materials in pharmaceutical and industrial research. The reduced need for high-intensity exposure facilitates the study of previously too-sensitive samples for modern electronics and medicine.
The takeaway
Ghost tomography provides a viable alternative to time-intensive scanning methods that risk damaging sensitive samples. Future applications may streamline the development of new materials by allowing more frequent and safer structural analysis.
Further reading
Learn more about the latest innovations in high-resolution imaging in our Materials Science section.
Source note: This article includes information reported by Esrf.
