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Advanced Materials

Nanostructure of a coated porous glass

3D mass density imaging section through nano-porous glass with three distinct grey levels for air (black), glass (grey), and a thin layer of Ta2O5 (white) coating the pores.

World record isotropic 3D tomography resolution achieved by researchers at the Swiss Light Source

Ptychographic x-ray computed tomography can bridge the resolution gap between electron microscopy and other x-ray imaging techniques. A nano-porous glass used for the calibration of high pressure mercury porosimeters with a surface coating of Ta2O5 was used to test the limits of the technique.

A world record for tomography was achieved with 16 nanometre isotropic 3D resolution. The spatial distribution of pores, glass network and coating layer were distinctly resolved in the nano-porous glass.

References

X-ray ptychographic computed tomography at 16 nm isotropic 3D resolution
Holler M, Diaz A, Guizar-Sicairos M, Karvinen P, Färm E, Härkönen E, Ritala M, Menzel A, Raabe J, Bunk O
Scientific Reports. 2014;4;3857.
https://doi.org/10.1038/srep03857