Materials Literature
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Circular and Linear dichroism spectroscopy used in biophysics, are both differential absorption techniques, which explore the chirality of complex macromolecular structures such as proteins and nucleic acids in solution. In the past two decades synchrotron radiation facilities throughout the world, have accommodated c…
There is growing interest to explore the long-wavelength X-ray domain for macromolecular crystallography (MX) experiments but there are a number of practical issues that make these experiments difficult to perform. In this article we study several aspects related to cooling a protein crystal in a vacuum environment. W…
Isotope shifts and hyperfine structure of tungsten were studied in the near UV range. We have used laser-induced fluorescence spectroscopy on a pulsed supersonic beam to probe the 5 D 0 → 5 F 1 transition at 384.9 nm, 7 S 3 → 7 P 4 transition at 400.9 nm and 7 S 3 → 7 P 3 transition at 407.4 nm. Three new magnetic hyp…
It has recently been demonstrated that Bi-doped glass optical fibers are a promising active laser medium. In this paper the luminescence and absorption spectra of various types of Bi-doped optical fibers are presented. The exact nature of the near IR emitting bismuth centers is still unclear, so some hypotheses and re…
We fabricate Co/Pt and Co/Pd multilayers and measure magnetoresistance. Our data show clear anisotropic interface magnetoresistance (AIMR) effect, in which the resistance variation shows a different sign from Co films when external magnetic saturation fields are rotated from in-plane transverse to perpendicular direct…
Abstract Synthesis and properties of aromatic block copolymers containing fluorinated phenylene and biphenylene groups and ammonium-substituted fluorene groups are reported. High-molecular-weight poly(arylene ether) block copolymers were prepared from the corresponding telechelic oligomers and were chloromethylated. Q…
High intensity optical excitation to transform a crystalline semiconductor into a plasmonic metal at near-infrared wavelengths is theoretically investigated. A calculated intensity of 51.46 GW/cm2 is sufficient to transform GaAs into metal at 1.55 μm to support plasmonic modes. A practical nanoscale plasmonic gap wave…
The annealing response of AA5182 Al–Mg alloy deformed to an effective prestrain of = 0.15 via plane strain and equibiaxial strain paths is compared. The comparison is done at two temperatures namely, 623 and 673 K. The recovery, recrystallization and grain growth behaviour of this alloy is studied by electron backscat…
Photovoltaic (PV) cell performance is dictated by the material of the cell, its quality and purity, the type, quantity, size and distribution of defects, as well as surface treatments, deposited layers and contacts. A synchrotron offers unique opportunities for a variety of complementary X-ray techniques, given the br…
An extension of the discrete perturbation theory [A. L. Benavides and A. Gil-Villegas, Mol. Phys. 97(12), 1225 (1999)] accounting for non-spherical interactions is presented. An analytical expression for the Helmholtz free energy for an equivalent discrete potential is given as a function of density, temperature, and…
In order to investigate the analyzing depth of N-K absorption spectra measured using the TEY and TFY methods, the spectra of Si 3 N 4 crystals covered with Cr thin films were measured. The thicknesses of Cr films were 1 – 100 nm. The N-K absorption intensity of Si 3 N 4 measured using the TEY method was observed at Cr…
Heat shock proteins (HSPs) are molecular chaperones that help organisms cope with stressful conditions. In this study, a novel small HSP (sHSP) gene was identified from the hard clam Meretrix meretrix (designated as Mm-HSP20). The full length of the cDNA is 1222 bp, consisting of a 5'-terminal untranslated region (5'U…
We present radio frequency transverse susceptibility (TS) measurements on oleic acid-coated and SiO2-coated Fe3-xO4 magnetite nanoparticles. The effects of the type of coating on the interparticle interactions and magnetic anisotropy are evaluated for two different particle sizes in powder samples. On the one hand, Si…
TiC x films were deposited by atomic layer deposition using tetrakis–neopentyl–titanium [ Ti ( CH 2 C ( CH 3 ) 3 ) 4 ] and H 2 plasma as the precursor and reactant, respectively. The growth of the rock‐salt–structured TiC x films was confirmed by X ‐ray and electron diffraction. The C ‐to‐ Ti ratio determined by Ruthe…
These proceedings are a recollection of the articles presented at the Eleventh International Conference on Synchrotron Radiation Instrumentation (SRI22012), held in Lyon (France), on 9–13 July 2012. SRI2012, co-organized by ESRF and SOLEIL, was the eleventh in a series of conferences bringing together the foremost x-r…
A numerical technique for solving a multigroup neutron transport equation with quasi-diffusion aimed at determining critical parameters of fast reactors capable of long-term operation in a self-adjustable neutron nuclear mode (SANNM) is described. The method for solving a multigroup neutron transport equation is based…
The CRG BM25-SpLine Beamline is located at bending magnet 25 of the ESRF. The beamline, which is split in two branches, is devoted to XAS, XRD and HAXPES. The photon energy covered by both branches range between 5 and 45 keV. The beamline double crystal monochromator (DCM) uses two parallel Si(111) crystals in (+, −)…
One of the major challenges in spot welding of ultra-thin gage steel (e.g., <0.6 mm) is the short cap life. Because of the elevated temperature developed at the electrode/sheet interface, the electrodes often require dressing or replacement within a fraction of the time when welding more traditional automotive gage st…
Interdigital (finger-like) electrodes are widely used for electrical impedance and capacitance tomography of composite dielectric materials and complex insulating structures. Because of their advantages, they are now effectively introduced as capacitance sensors into a variety of industrial branches, agriculture, medi…
Collagens are a remarkable group of proteins that are critical from a physiological perspective due to their diverse and versatile functions in vivo. However, collagens are challenging to generate ex vivo for biomaterials or regenerative medicine due to their complex processing and assembly into functional materials.…