Research and development process as well as problem-solving in the industry requires many factors such as scientific explorations, which can provide innovative ways. The variety of analytical experiments that can be performed using Synchrotron radiation provide in many cases the key to solving problems arising from technological challenges in industrial research or development. In this...
Synchrotron radiation is a gigantic worldwide enterprise serving tens of thousands of users. With more than fifty operating facilities and several more underway, its research produced so far more than 300,000 publications and several Nobel prizes. However, synchrotron radiation is also widely considered a complicated phenomenon, difficult to understand for non-specialists. But this is far from...
Investigating matter and decoding its secrets are at the heart of humanity's quest to understand the world around us. Providing radiation sources over a wide range of frequencies, tens of million times as intense as those available in conventional laboratories, Synchrotron light facilities allow addressing complexity in condensed matter and life sciences, linking functions and properties to...
The high brightness light source of synchrotron radiation provides a variety of experimental techniques for probing the material. Some techniques such as x-ray photoelectron spectroscopy (XPS) and angle-resolved photoemission spectroscopy (ARPES) are widely used for the investigation of the electronic structure of occupied electronic states of solid. While the details of the unoccupied states...
The changes in behaviour that could occur on the magnetic properties due to the structural evolution during the doping process is actually subject of our discussion. The Curie temperature (Tc) of amorphous Fe-rich alloys can be greatly enhanced by doping with light elements. In this investigation, ion implantation is used to dope Fe thin films with H, He, B, C, and N. We present a preliminary...
Small angle x-ray scattering (SAXS) is used to study structures of size about 10 Å or larger, in particular, the shape and fractal nature of particles. The Guinier law allows determination of the radius of gyration Rg of a particle of unknown shape and size. Radius of gyration is the root-mean-square distance of all points in the particle from its center of mass. The Porod law, on the other...
Cement manufacturing especially Portland Cement, the main component for the fabrication of concretes, is the most used building and construction material which has complex hierarchical microstructures. Quantitative characterization of cementitious materials microstructures is of paramount importance for assessing the performance and durability of the final products. To gain a deeper insight...
All about what to do – and what not to do – once you decided to become a synchrotron researcher.
Multiferroic materials simultaneously contain both the magnetic and ferroelectric orders. In recent years, extensive efforts have been devoted to the study of crystal and magnetic structure of these materials, because of rich fundamental physics and technological applications. In this seminar, we report and discuss the results of synchrotron XRD and neutron diffraction studies on multiferroic...
New excavations at prehistoric site of Espidej (3th Millennium BC) in south east Iranian orogeny led to a magnificent opportunity for re-examining the metallurgical records about the archaeometallurgy of Cu-As alloy long south-eastern cultural zone of Iran. The triangle of Jiroft-Tepe Yahya-Shahdad and the metallic Bronze objects from these areas are amongst the most important remarks for...
اپتیک پرتو ایکس در خطوط باریکه شتابدهنده دایموند
شتابدهنده سنکروترونی دایموند در انگلستان با بیش از 30 خطوط باریکه از فعالترین شتابدهنده های سنکروترونی دنیا است که با انجام طرح به روز رسانی دایموند-دو در چند ساله پیش رو و کاهش امیتنس خود به حدود 80 پیکومتر به یکی از به روزترین فناوریهای روز سنکروترونی دنیا تبدیل خواهد شد. تنوع زیادی از خطوط باریکه از پرتوهای با انرژی بسیار پایین فروسرخ تا...
Microscopy of biological tissue is a valuable tool for many research questions in medicine and biology. With synchrotron radiation micro-tomography, phase-contrast imaging can be exploited to reveal three-dimensional structure of soft tissue, complementing the classical visual histology. In this talk I will present the concepts behind phase-contrast imaging and how volumetric imaging of soft...
An original complex with europium on the basis of diazafluoren, such that dafone is 4,5- diazaf1uoren-9-one is fabricated and characterized using Extended X-ray Absorption Fine Structure (EXAFS), IR spectroscopy, UV-Vis spectroscopy and elemental analysis. Since the europium complex structure is not achievable via typical crystallographic approaches, an XAFS spectrum was acquired for LIII Eu...
The contribution of oxidative stress in several chronic and degenerative diseases suggests that antioxidant therapy can be a promising therapeutic strategy. However, in the case of many antioxidants, their biodistribution and bioactivity are restricted due to low water solubility. Curcumin is a powerful free radical scavenger that upon conjugation to gold nanoparticles results in the formation...
From very large, to ultra-small (from meter to manometer); this is how this study of an alteration process on prehistorical cave walls, was dealt. On wall surfaces in some prehistorical caves, a ‘white veil’ has appeared and is being observed quite frequently now. Its origin is not very well defined. For more than 20 years, researchers have been observing and analysing this phenomenon which...
Macromolecular crystallography (MX) has been the most successful synchrotron technique contributing to several Nobel prices in Chemistry and Physiology or Medicine. The atomic models obtained as results of the diffraction experiments give detailed structural insight into the function of proteins, nucleic acids and their complexes. It has become an important tool in basic science and drug...
