In: Physics and Chemistry of Minerals, 2015, vol. 42, no. 4, p. 251-260
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In: The Astronomy and Astrophysics Review, 2015, vol. 23, no. 1, p. 1-98
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In: Applied Physics A, 2015, vol. 121, no. 3, p. 949-955
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In: Physical Review B, 2020, vol. 102, no. 8, p. 085148
The transition metal chalcogenide Ta2NiSe5 undergoes a second-order phase transition at Tc=328K involving a small lattice distortion. Below Tc, a band gap at the center of its Brillouin zone increases up to about 0.35 eV. In this work, we study the electronic structure of Ta2NiSe5 in its low-temperature semiconducting phase, using resonant inelastic x-ray scattering (RIXS) at the Ni L3 edge....
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In: The Journal of Physical Chemistry Letters, 2020, vol. 11, no. 13, p. 5037–5043
In this work, cobalamins with different upper axial substituents and a cobalamin derivative with a ring modification were studied using chiroptical spectroscopies, in particular resonance Raman optical activity (RROA), to shed light on the influence of structural modifications on RROA spectra in these strongly chiral systems in resonance with multiple excited states at 532 nm excitation. We...
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In: Materials, 2020, vol. 13, no. 9, p. 2018
Magnetosomes are near-perfect intracellular magnetite nanocrystals found in magnetotactic bacteria. Their synthetic imitation, known as superparamagnetic iron oxide nanoparticles (SPIONs), have found applications in a variety of (nano)medicinal fields such as magnetic resonance imaging contrast agents, multimodal imaging and drug carriers. In order to perform these functions in medicine,...
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In: Journal of Applied Crystallography, 2020, vol. 53, no. 1, p. 58–68
Silicon nanowire-based sensors find many applications in micro- and nano- electromechanical systems, thanks to their unique characteristics of flexibility and strength that emerge at the nanoscale. This work is the first study of this class of micro- and nano-fabricated silicon-based structures adopting the scanning X-ray diffraction microscopy technique for mapping the in-plane crystalline...
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In: Journal of Analytical Atomic Spectrometry, 2019, vol. 34, no. 11, p. 2325–2332
We report on novel reference-free methods to determine the instrumental resolution of transmission-type bent crystal spectrometers. The novel methods are based on the measurements of a selected X-ray line in several orders of diffraction. It is shown that the angular broadening of the spectrometer and the natural linewidth of the selected transition can be obtained directly from the novel...
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In: X-Ray Spectrometry, 2019, vol. 48, no. 5, p. 351–359
We report on measurements of the Kβ diagram, valence‐to‐core (VtC), and hypersatellite X‐ray spectra induced in metallic Cr by photon single and double K‐shell ionization. The experiment was carried out at the Stanford Synchrotron Radiation Lightsource using the seven‐crystal Johann‐type hard X‐ray spectrometer of the beamline 6‐2. For the Kβ diagram and VtC transitions, the...
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In: Review of Scientific Instruments, 2019, vol. 90, no. 7, p. 073105
We report on a laboratory-based facility for in-house x-ray absorption fine structure (XAFS) measurements. The device consists of a conventional x-ray source for the production of the incident polychromatic radiation and a von Hamos bent crystal spectrometer for the analysis of the incoming and transmitted radiation. The reliability of the laboratory-based setup was evaluated by comparing the...
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