%0 journal article
%@ 2304-6732
%A Longo, E., Alj, D., Batenburg, J., de La Rochefoucauld, O., Herzog, C., Greving, I., Li, Y., Lyubomirskiy, M., Falch, K.V., Estrela, P., Flenner, S., Viganò, N., Fajardo, M., Zeitoun, P.

%D 2022
%J Photonics
%N 2
%P 98 
%R doi:10.3390/photonics9020098
%T Flexible Plenoptic X-ray Microscopy
%U https://doi.org/10.3390/photonics9020098
2 
%X X-ray computed tomography (CT) is an invaluable technique for generating three-dimensional (3D) images of inert or living specimens. X-ray CT is used in many scientific, industrial, and societal fields. Compared to conventional 2D X-ray imaging, CT requires longer acquisition times because up to several thousand projections are required for reconstructing a single high-resolution 3D volume. Plenoptic imaging—an emerging technology in visible light field photography—highlights the potential of capturing quasi-3D information with a single exposure. Here, we show the first demonstration of a flexible plenoptic microscope operating with hard X-rays; it is used to computationally reconstruct images at different depths along the optical axis. The experimental results are consistent with the expected axial refocusing, precision, and spatial resolution. Thus, this proof-of-concept experiment opens the horizons to quasi-3D X-ray imaging, without sample rotation, with spatial resolution of a few hundred nanometres.