Materials Literature
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Novel thermopiles based on modulation-doped AlGaAs/InGaAs heterostructures are proposed and developed for the first time for uncooled IR focal plane array (FPA) image sensor application. The high responsivity R with the high-speed response time τare designed to be 4900 V/W with 110 μs. Based on integrated high-electro…
The original methods of determining physicochemical properties (e.g. relative density, fixed carbon coking ability, viscous flow activation energy, number-average molecular weight, initial material destruction temperature) and characteristics of electronic structure (ionization potentials and electron affinity) of hyd…
Particle-hole continuum in Dirac sea of graphene has a unique window. It has been predicted to support a long lived neutral triplet gapless bosoinc mode that disperses over a wide energy range in entire Brillouin zone. In this work, using a repulsive Hubbard model, we study the fate of such collective mode at zero tem…
As society progresses and resources become scarcer, it is becoming increasingly important to cultivate new technologies that engineer next generation biomaterials with high performance properties. The development of these new structural materials must be rapid, cost-efficient and involve processing methodologies and p…
Laser impact welding is a solid-state, collision-based welding process. In this process, laser-generated optical energy is converted to kinetic energy through the ablation at the surface and confinement of the gas generated between a flyer and backing plate. The launch of the flyer can be affected by many factors, for…
In the present research, the effect of citric acid amounts on the structural and magnetic properties of ferrite particles with a chemical composition of Ni0.4Cu0.2Zn0.4Fe2O4 has been evaluated. Molar ratios of metal nitrates to citric acid (MN: CA) were selected as 1:1 and 1:2. X-ray diffraction pattern confirmed the…
XPS measurements of coarse-grained and nanostructured nitinol (Ni(50.2)Ti(49.8)) before and after chemical treatment in hydrofluoric acid (40% HF, 1 min) are presented. The nanostructured state, providing the excellent mechanical properties of nitinol, is achieved by severe plastic deformation. The near-surface layers…
Because of the drastic reduction in processing time and energy cost, the microwave radiation applied as an alternative method to synthesize solids has been recently investigated. Yb 3+ /Er 3+ -codoped CaF 2 (CaF 2 :Yb 3+ /Er 3+ ) nanocrystals are fabricated using this approach, and the phenomenon of microwave-enhanced…
We followed the process of enzymatic digestion of ganglioside GD1a, operated by sialidase on aggregated micelles. The product is the ganglioside GM1, lacking the external sialic acid. The structural aspects and the kinetics connected to the process occurring on a fragmented-condensed substrate, the ganglioside micelle…
Chitosan, as shown in Figure 1, is a well-known hetero biopolymer (natural polysaccharide) made of glucosamine and a fraction of acetylglucosamine residues (Krishnapriya and Kandaswamy, 2010). It is a biodegradable, biocompatible, and nontoxic natural polymer with a metal uptake capacity, (Jung et al., 1999; Rabea et…
We exploit the strong optical anisotropy of metal nanorods to measure their mobility in a complex fluid. Gold rods in hot agarose solutions cause dynamic, depolarized scattering with an exponentially decaying autocorrelation. As the solution cools down, its decay constant increases. At a certain temperature, the autoc…
We study the anomalous concentration effects in mixtures of side-chain liquid crystalline polymers (SCLCPs) and low-molecular-weight liquid crystals (LMWLCs) by modifying the theory of Brochard, Jouffroy, and Levinson (BJL) to include the effects of the polymer backbone. Our new theory considers both the interaction o…
Perovskite-type (ABO3) relaxor ferroelectric crystals have perhaps the most simplest and at the same time the most puzzling structure. Relaxor ferroelectrics are a special type of ferroelectrics possessing remarkably high dielectric permittivity, electrostrictive coefficients, and electrooptical constants related to t…
Electromagnetic compression was integrated into the process chain of hot metal extrusion in order to reduce the cross section of the workpiece locally. To integrate both processes, a tool coil for electro-magnetic compression is positioned behind the die exit and coaxially to the extrudate. Additionally, a counter die…
Abstract A simple and effective solvent swelling method was developed for the preparation of poly(methyl methacrylate) (PMMA)/europium (Eu) complex hybrid nanospheres. Transmission electron microscopy and dynamic light scattering results indicate that the as‐prepared PMMA–Eu nanoparticles had a spherical morphology, w…
Water nanotubes are one-dimensional channels of water clusters that exist in nanoporous H-bonded metal-coordination crystals of cobalt(III) complexes and trimesate. It is shown by X-ray crystallography that the pre-melting endothermic peak observed in the ascending differential scanning calorimetry curve results from…
Recent advances in the description of atoms and molecules based on Dimensional scaling analysis, developed by Dudley Herschbach and co-workers, provided new insights into visualization of molecular structure and chemical bonding. Prof. Herschbach is also a giant in the field of single molecule scattering. We here repo…
A two-dimensional superconductor (SC) on surfaces of topological insulators (TIs) is a mixture of s-wave and helical p-wave components when induced by s-wave interactions, since spin and momentum are correlated. On the basis of the Abrikosov-Gor'kov theory, we reveal that unconventional SCs on the surfaces of TIs are…
Tightening legislation for vehicles across the world has caused the use of monolith catalysts in automotive emission control to become ubiquitous.Control of the surface adhesion of the platinum group metal (PGM) coating onto the monolith block, to maximise catalytic performance for a minimum PGM loading, is therefore…
Direct detection of (13) C nucleus can be used as a valuable alternative where (1) H detection poses a challenge due to relaxation effects, chemical exchange and poor chemical shift dispersion. In this context, we have designed a suite of 2D (13) C(α) -detected hNCA experiments that provide sequential correlations of…