Materials Literature
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The plastic deformation of nanoporous Au under compressive stress was studied by depth-sensing nanoindentation combined with scanning electron microscope characterization. The nanoporous Au investigated in the current study exhibits a relative density of 42%, and a spongelike morphology of interconnecting ligaments on…
Transport properties have been studied for a perovskite heterojunction consisting of SrRuO3 (SRO) film epitaxially grown on SrTi0.99Nb0.01O3 (Nb:STO) substrate. The SRO/Nb:STO interface exhibits rectifying current–voltage (I–V) characteristics agreeing with those of a Schottky junction composed of a deep work-function…
A simple, one-step method for fabricating single biologically functionalized conducting-polymer (polypyrrole) nanowire on prepatterned electrodes and its application to biosensing was demonstrated. The biologically functionalized polypyrrole was formed by the electropolymerization of an aqueous solution of pyrrole mon…
We investigated newly designed photo acid generators (PAGs) based on a layer-controlled supramolecular polymer N-substituted with camphor or toluenesulfonyloxy units to achieve better conductivity of polyaniline array patterns via microstructure control. Synthesis and properties of these PAGs containing sulfonyloxymal…
The conformational space of the most biologically significant backbone folds of a suitable methionine peptide model was explored by density functional computational method. Using a medium [6-31G(d)] and a larger basis set [6-311++G(2d,2p)], the systematic exploration of low-energy backbone structures restricted for th…
Dissolution and removal of photoresist films is performed numerous times during the fabrication of electronic, optical, and mechanical devices and integrated circuits. Information regarding changes in refractive index and film thickness is of interest for the design and modeling of such processes. Spectroscopic reflec…
We review how molecular dynamics computer simulations are providing a comprehensive picture of the behaviour of silica, as modelled by the van Beest-Kramer-van Santen (BKS) potential. We have recently evaluated a number of key properties of this model system: the phase diagram, including melting lines of three crystal…
A tunable blue to blue-white phosphor was prepared with a solid-state reaction method by varying the composition concentration of source materials. The decomposition temperature and weight loss of and were evaluated by thermogravimetric analysis. The deficiency of Ga in phosphor can be compensated by increasing the mo…
The unusual electronic, vibrational, and structural properties of the title compound are associated with the polar donor D=2-chloro-5-methyl-p-phenylenediamine, which is twofold disordered in single crystals. Its 3 D dipole generates random site energies with standard deviation sigma=0.35 eV that significantly alter t…
Vertisols of Iran occupy about 70,000 ha of arable land. They are located in four provinces mainly: Fars (16,000 ha), as soils on calcareous sediments of lowlands, with a ustic-hyperthermic soil climate; Kermanshah (34,000 ha) and Lorestan (6,000 ha), as soils on calcareous sediments in alluvial plains and on plateaux…
Abstract Triblock copolymer poly(ethylene glycol)‐poly(alkylene phosphate)‐poly(ethylene glycol) was prepared by first reacting hexamethylene glycol with dimethyl‐H‐phosphonate at conditions of transesterification and then replacing the CH 3 OP(O)(H)O‐… end‐groups by monomethyl ether of poly(ethylene glycol). The cour…
This review deals with the structural transitions arising in anion-deficient Mn- and Cu-based perovskites when changing the anion content. Special attention is devoted to the local structure of such materials, studied with electron diffraction and high-resolution electron microscopy. Using examples of three-dimensiona…
As reproductive disorders were found to be one of the major constraints of livestock improvement in Burkina Faso, an ethno-veterinary survey showed that some plant species are used by traditional veterinary healers as basic components of indigenous recipes to treat them. The ecological locations, the current relative…
Stress migration (SM) and electromigration (EM) were widely used to study the performance of interconnection process of metal/via formation in copper dual damascene of wafers. Necking and voids at the via bottom were important in causing failures in tests of stress migration and electromigration. In this report, the c…
By using near-field scanning microscopy/spectroscopy, we show that surface-enhanced Raman scattering (SERS) of rhodamine 6G deposited on self-affine silver colloidal film is localized to small, down to less than 200 nm, portions of the film. The locus of the SERS signals ("hot spots") does not necessarily reside in sp…
Perovskite-type powders were prepared using a complex polymeric precursor method. Thermal analysis was carried out on the perovskite precursor to investigate the oxide-phase formation. The structural phase of the powders was determined by X-ray diffraction. These results showed that the decomposition of the precursors…
Aurivillius-type structure ceramics are considered to be good candidates for use as high-temperature piezoelectrics. To this aim, it is essential to know the resonance characteristics in the working temperature range, rather than at room temperature. In this paper, an automatic iterative procedure has been used to cha…
Geometrical optimizations and electronic structural analyses of the -O(2)B(2)- bridged hydrometal complexes (M(4)H(3)C)(2)B(2)O(2) and (M(4)H(3)N)(2)B(2)O(2)(2+) (M = Ni, Mg) containing double tetracoordinate planar nonmetals (TPN) have been performed using the density functional theory at the B3LYP/6-311+G(d,p) level…
An intermolecular potential is introduced for the study of molecular mesogenic fluids. The model combines distinct features of the well-known Gay-Berne and Kihara potentials by incorporating dispersive interactions dependent on the relative pair orientation to a spherocylinder molecular core. Results of a Monte Carlo…
We demonstrate an approach for producing an array of nanopores on a silicon surface. The methods used combine nonlithographic pattern transfer and chlorine plasma etching to produce ∼60nm diam holes up to 1μm in depth. The near-normal specular optical reflectance of these systematically modified surfaces is found to d…