XAFS1515th international conference of X-ray absoption fine structure was hold in Bejing. China between 22nd-28th July, 2012 with attendance of almost all internationally recognised scientists in the field including Prof. John Rehr known for FEFF code and Prof Edward A. Stern of University of Washington, many theoretical and experimental contributions from start to the evolution of XAFS technique, and many others .

Me with Prof Edward Stern in XAFS15

I was lucky to meet those worldly-recognised scientist in  person and particularly get advice from Prof Edward A. Stern for my future academic career. I have also found a chance to present my work infront of such world-leading academics.

Few Words about XAFS

X-ray absorption spectroscopy allows us to understand local atomic structure of a wide range of materials from environmental to biological. As it is in the case of X-ray diffraction, the material does not need to be crystalline, but can also be amoprhous. Basically, any type of material can be studied such as solid, liquid or gas to have accurate information about electronic structure of a place of the interest. See the link for the quick history of EXAFS.


One of the techniques in XAS field known as Optically-detected Extended X-ray Absoption Fine Structure (OD-EXAFS) which we are also interested in becomes very important in linking optical and structural properties of the material such as for luminescent nanomaterials. It is vital to know what is the source of the luminescence for further application of the device produced. I presented  the last findings of our group from Queen Mary, University of London in the XAFS15 conference which is briefly about the relation between electronic structure and its optical contribution of Ge nanocrystals prepared by various routes. Simultaneous OD-EXAFS, EXAFS and X-ray excited optical luminescence from Ge nanocrystals with different surface termination was shown  for the first time. The results will be soon available for public in the website of Journal of Physics: Conference Series.

The lastest news in the field can be followed in the IXAS portal website


The XAFS16 conference will be held in summer 2015 in Karlsruhe between  26th– 31st July, 2015 with new observations from all related fields and developments of the technique.  Follow the link for furhter information:


I hope to see you all again in Karlsruhe  for XAFS16 conference .


Ali Karatutlu