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Publications by Excillum and MetalJet users | Excillum




Taking the advantage of high spatial coherence and brightness given by the liquid metal jet anode tube, the scientists at university of Göttingen have succeeded in demonstrating the X-ray phase-contrast tomography as a novel, non-invasive imaging methodology to do 3-D virtual histology at isotropic sub-cellular resolution. With the optimized system, image reconstruction and analysis procedures, the 3-D cytoarchitecture of the unstained paraffin-embedded human cerebellum has been studied and compared with setups at both synchrotron radiation and laboratory source. The latter, which has revealed the location of neurons and is in good analog to those from synchrotron, will endorse broader applications with good accessibility, sufficient spatio-temporal resolution and large field-of-view.


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Sci Rep. 2017; 7: 17178. Published online 2017 Dec 7. doi:  10.1038/s41598-017-16607-8 
Young-Woo Nam, Razan Orfali, Tingting Liu,  Kunqian Yu,  Meng Cui, Heike Wulff, and Miao Zhang
Chapman Univjpg  

A group from Chapman University School of Pharmacy have used a Bruker D8 Venture system with a MetalJet X-ray source to study a Small-conductance Ca2+-activated K+ (SK) channel. The interaction between four compounds acting as positive modulators and their binding pockets in the SK channel was investigated and a strong trend between interaction energy and the potency of the compounds was shown.


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Abstract: Maia Mapper is a laboratory µXRF mapping system for eÿcient elemental imaging of drill core sections serving minerals research and industrial applications. It targets intermediate spatial scales, with imaging of up to ∼ 80 M pixels over a 500 × 150 mm2 sample area. It brings together (i) the Maia detector and imaging system, with its large solid-angle, event-mode operation, millisecond pixel transit times in fly-scan mode and real-time spectral deconvolution and imaging,(ii) the high brightness MetalJet D2 liquid metal micro-focus X-ray source from Excillum, and (iii) an eÿcient XOS polycapillary lens with a flux gain ∼ 15, 900 at 21 keV into a ∼ 32 µm focus, and (iv) a sample scanning stage engineered for standard drill-core sections. Count-rates up to ∼ 3 M/s are observed on drill core samples with low dead-time up to ∼ 1.5%. Automated scans are executed in sequence with display of deconvoluted element component images accumulated in real-time in the Maia detector. Application images on drill core and polished rock slabs illustrate Maia Mapper capabilities as part of the analytical workflow of the Advanced Resource Characterisation Facility, which spans spatial dimensions from ore deposit to atomic scales.


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January 2016 – Chapter from X-ray and Neutron Techniques for Nanomaterials Characterization, pp 507-544 - Peter Siffalovic, Karol Vegso, Martin Hodas, Matej Jergel, Yuriy Halahovets, Marco Pelletta, Dusan Korytar, Zdeno Zaprazny, Eva Majkova


thumb x ray and neutron techniques for nanomaterials characterization  

This book chapter presents a thorough introduction to SAXS and GISAXS starting with the mathematical foundation. It gives a review of state-of-the-art instrumentation describing x-ray sources, optics, and detectors, explaining how the metal-jet technology has opened up the possibility to perform time-resolved in-situ studies of weakly scattering materials. Two time-resolved applications are described in more detail to show the current research front.

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August 2016 – Proc. SPIE 9964, Advances in Laboratory-based X-Ray Sources, Optics, and Applications V, 99640J (September 16, 2016); doi:10.1117/12.2238798 - M. Polikarpov, A. Barannikov, D. Zverev, S. A. Terentiev, S. N. Polyakov, S. I. Zholudev, S. Y. Martyushov, V. N. Denisov, N. V. Kornilov, I. Snigireva, V. D. Blank, A. Snigirev


thumb Laboratory and synchrotron tests of two dimensional parabolic x ray compound refractive lens made of single crystal diamond  

A team from Immanuel Kant Baltic Federal University, FSBI TISNCM and the ESRF joined together to design, manufacture and evaluate two-dimensional parabolic compound refractive lenses made of single-crystal diamond. The evaluation was performed with the MetalJet D2 x-ray source from Excillum as well as at ID06 at ESRF. The combination of unique optical and thermal properties makes them well suited as optical elements at x-ray sources with high-heat flux. 

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March 2016, AIP Advances 6, 035007 (2016); - Martin Krenkel, Mareike Töpperwien, Christian Dullin, Frauke Alves, and Tim Salditt


Krenkel APL 2016 2  

A team from University of Göttingen shows high-resolution phase-contrast tomography experiments done on whole mice, with a MetalJet-based laboratory setup. The high brilliance of the MetalJet enables propagation-based phase contrast in local tomography, even though there is highly absorbing tissue surrounding the mouse lung.


A video showing the reconstruction of the mouse lung can be found by follwing this url:


"Propagation-based phase-contrast tomography for high-resolution lung imaging with laboratory sources" by Martin Krenkel, Mareike Töpperwien, Christian Dullin, Frauke Alves, and Tim Salditt is licensed under CC BY 4.0

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February 2016 – Sensors and Actuators A: Physical,  Volume 241, 15 April 2016, Pages 87–95 - K. Vegso, M. Jergel, P. Siffalovic, M. Kotlar, Y. Halahovetsa, M. Hodasa, M. Pellettaa, E. Majkovaa



A group from Slovak Academy of Science in co-operation with people from STU Centre for Nanodiagnostics performed in-situ tests on a strain gauge, based on a monolayer of colloidal gold nanoparticles deposited on a flexible Mylar foil, by small-angle X-ray scattering using a MetalJet X-ray source from Excillum. The high brightness of the MetalJet allowed a very fast data collection, with 10 s temporal resolution. The results of the study indicate that the colloidal gold-nanoparticles on a flexible is a potential future strain gauges with a fast linear response within a wide strain range.

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January 2016, AIP Conference Proceedings 1696, 020043 (2016); doi: 10.1063/1.4937537 - A. Balles, Ch. Fella, J. Dittmann, W. Wiest, S. Zabler, and R. Hanke



A team from Julius-Maximilians-Universität Würzburg presents a grating interferometer based on a MetalJet X-ray tube, as well as a self-built high resolution detector. They show that the small spot-size of the MetalJet makes the use of a source grating unnecessary. This work was presented at the XRM 2014 in Melbourne, and published in AIP Conference Proceedings 1696 in January 2016.

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November 2015 – Scientific Reports 5, Article number: 16625 (2015) doi:10.1038/srep16625 - W. Vågberg, D. H. Larsson, M. Li, A. Arner and H. M. Hertz 



A KTH/KI group demonstrates that the three-dimensional muscular structure of unstained whole zebrafish can be imaged with sub-5 μm detail with propagation based X-ray phase-contrast tomography. By comparing the X-ray imaging results with histology, it can be confirmed that individual myofibrils can be resolved in the whole-body imaging.



"X-ray phase-contrast tomography for high-spatial-resolution zebrafish muscle imaging" written by William Vågberg et. al. is licensed under CC BY 4.0.


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October 2015 – PNAS 2015 112: 12569-12573 - I. Zanette, M. Zdora, T. Zhou, A. Burvall, D. H. Larsson, P. Thibault, H. M. Hertz and F. Pfeiffer 



A TUM/Diamond/KTH/UCL team demonstrates speckle based x-ray phase contrast, applied to material characterization, using a MetalJet x-ray source from Excillum. The method is based on correlation of near-field speckles and yields quantitative measurements of the full X-ray refractive index of the object with high sensitivity. X-ray speckle tracking tomography broadens the capabilities of X-ray imaging at laboratory sources with strong potential in materials and life sciences.

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