XAFS Journal Club

X-ray excited optical luminescence (XEOL) is a photon-in-photon-out process which monitors the visible luminescence emitted from materials upon X-ray excitation. Unlike using low energy excitation source such as UV, during X-ray excitation, core electrons are excited and the production of luminescence is a much more complicated process. Because of this, X-ray excited luminescence can be […]

K-fluorescence X-ray emission spectroscopy (XES) is receiving a growing interest in all branches of natural sciences to investigate the local spin in 3d transition metal complexes. Unlike the valence-to-core emission lines, the core-to-core transitions in Kβ (3p to 1s) and Kα (2p to 1s) do not probe the valence shell directly and the chemical sensitivity […]

Ion reactions offer a huge playground for tuning the electronic and crystal properties of inorganic solids for energy applications. Our research focuses on resolving a longstanding question in materials electrochemistry regarding redox active solids: how does the mesoscale chemical distribution influence ion reactions at different length scales? Through manipulating the thermodynamics and kinetics of the […]

Single atoms catalysts (SACs) have been heavily investigated in the recent years because of their good catalytic properties (especially activity and selectivity) for many chemical reactions . In addition to that, in SACs, the supported metals are used with extremely high efficiency compared to their nano counterparts. That is very important for noble metals, which […]

The Australian XAFS community started from small beginnings and currently, XAFS is one of the most oversubscribed techniques at the Australian Synchrotron. The community has been fostered by access to facilities; initially the Australian National Beamline Facility (ANBF) at the Photon Factory, to more recently the XAS beamline at the Australian Synchrotron. The ANBF was […]

The solar light-driven splitting of water for hydrogen fuel production is a promising alternative to fossil fuels due to their rapid depletion and concomitant environmental pollution. The design of light-driven devices composed of organic, inorganic or hybrid materials that can mimic natural photosynthetic processes is extremely desirable. An essential component of such systems is the […]

100/year) and number of users' publications (> 60/year). Experiments can be done in transmission, fluorescence-yield and electron-yield modes. Additionally, in situ measurements are possible. To demonstrate XAS capability at SLRI, highlighted research in various fields will be presented, i.e. Fe site determination on a grafted Zr-based MOF catalyst , monitoring dynamic phase transition of olivine […]

Coherent X-ray scattering (diffraction) methods will be key to exploiting the high coherent flux of 4th generation synchrotron sources. Ptychography is a coherent diffraction technique that allows rapid, reliable inversion of arrays of diffraction images into real space images by using overlapping spatial areas to constrain the reconstruction . While ptychography is quite well developed […]

Hefei Light Source (HLS) is the first dedicated synchrotron radiation facility in China with electron ring energy of 0.8 Gev, which is located on the West Campus of the University of Science and Technology of China (USTC). With the completion of twice constructions and recent upgradation, HLS become a fully upgraded soft X-ray synchrotron radiation […]

Extraterrestrial materials such as meteorites and interplanetary dust particles are often very complex and non-uniform, with diverse species within a small sample. In some cases, especially for the products of sample-return missions, the available samples are small and precious. X-ray micro- and nano-spectroscopy are ideal complements to other methods such as TEM and nano-SIMS. In […]

This presentation will take place at 6 pm Monday, Seattle (Los Angeles) time / 9 am Tuesday, Beijing time using Zoom. For the Zoom link and password, visit  https://tinyurl.com/XAFStalks  within 30 minutes of the beginning of the presentation. The Linac Coherent Light Source (LCLS) upgrade to a high repetition source offers new avenues to pump/probe […]

X-ray spectroscopy delivers strong impact across the physical and biological sciences by providing end users with highly detailed information about the electronic and geometric structure of matter. To decode this information in challenging cases, e.g., in operando catalysts, batteries, and temporally evolving systems , advanced theoretical calculations are necessary. The complexity and resource requirements often […]