Materials Literature
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This work presents measurements of the static magnetization processes of non oriented electrical steels usually used for the electrical machines. The experimental results obtained can be used as a benchmark for the identification procedures of phenomenological models used for the representation of the magnetic behavio…
We describe the first parallel algorithm to obtain Cartesian coordinates of a molecular structure from internal coordinates. This algorithm is important for problems such as protein engineering and fitting protein structures to experimental data. Proteins contain thousands to millions of atoms. Their positions can be…
This paper addresses the limitation of linear winding and needle winding of outer stators for electric drives. A new winding technology based on conventional needle winding is introduced and discussed. Winding heads customized to fit the new process are presented and their geometry is explained. The corresponding wind…
It is reported in the literature that electrical-field enhancements can appear in irregular deformed wave-guides. Using Maxwell's equations it is rather difficult to find analytical solutions for these arrangements. On the other hand, it is long been known that wave-guides can be approximated by systems of transmissio…
Abstract The cluster issue “Nanobioinorganic Chemistry: Converging Inorganic Chemistry and Biology at the Nanoscale” presents a selection of applications at the border between materials chemistry and biology tailored to an inorganic chemistry perspective.
Accurate modeling of non-equilibrium heat transport in nanostructures demands an appropriate description of phonon dispersion relation and proper treatment of various anharmonic effects. In this work, we develop and employ a coupled VFF molecular mechanics-Monte Carlo (VFF-MC) platform to solve the phonon Boltzmann Tr…
The performance of a cage-less 16-kW, 1,500-rpm interior permanent magnet machine developed for a portable generator application is examined when run as a motor under open-loop volts-per-hertz control from an inverter. The analytical and experimental steady-state results show the machine can operate with high power-fa…
Acidic pH retards the fibrillization
The present work focuses on the electromagnetic simulation of densely-packed crystalline assemblies of subwavelength particles (metamaterials), for which a rigorous full-wave analysis still remains challenging. Indeed, even for moderate electric sizes, the overly-populated mesh needed to preserve the geometrical featu…
Abstract Quantum dots have size‐ and composition‐ tunable photoluminescence and can provide saturated colors for display technology. The use of QDs in display technology strongly relies on the materials science as well as process technique. Here I present some of emerging materials including pervoskite QDs, alloyed na…
The interrelation of the secondary-electron emission (SEE) coefficient δ m with the target-atom size, the electron configuration of the valence shells thereof, and the principal quantum number of 44 elements is established. It is revealed that the traditional concept of the δ m dependence on the atomic number Z of ele…
The solution of the Poisson equation is an essential stage in the calculation of quantum properties of materials as it appears both in the electrostatic Hartree term and in the Fock exchange operator. We discuss here an integral method for the calculation of Poisson potential and demonstrate its integration with a Den…
The paper discusses methodology for construction of low-pass high voltage (HV) filter for measuring of partial discharge deteriorating the insulating system of electric machinery. It focuses mainly on the shape optimization using analytical approach with subsequent verification using finite element method. It also giv…
In this work we propose an advanced electrothermal simulation methodology for nanoscale devices based on a macroscopic model for acoustic and optical phonon energy transfer. This is coupled with the Poisson equation and Current Continuity Equations (CCE) and solved self-consistently. This has been implemented in the G…
The objective of this study is to develop tissue protection methods by modulating bubble cloud initiation pressure thresholds. Specifically, we investigated pressure thresholds to initiate cavitation bubble clouds by the shock scattering mechanism. Cavitation initiation displays a stochastic nature affected by existin…
Recent neutron diffraction studies have shown that in Cr$_2$(W,Te)O$_6$ systems, which consist of bilayers with strong antiferromagnetic inter-bilayer coupling between Cr moments, the intra-bilayer coupling between the Cr moments can be tuned from ferro (for W) to antiferro (for Te). {\it Ab initio} density functional…
InxGayAl1−x−ySb alloys have been grown by molecular beam epitaxy for use as a buffer layer for growing semiconductors on GaAs substrates with lattice constants beyond that of AlSb. This is an extension of the use of AlxGa1−xSb alloys to accommodate for the lattice mismatch with semi-insulating GaAs substrates. The gro…
In this paper, we report a fast effective mass model for accurately calculating the bound states and optical transitions of self-assembled quantum dots. The model includes the atomistic strain effects, namely, the strain deformation of the band edges, and strain modification of the effective masses. The explicit inclu…
We present vertical split-ring resonators (VSRRs) which behave as magnetic metamolecules sensitive to both the incident electric and magnetic fields upon excitation. A couple of potential applications such as VSRR-based highly sensitive refractive-index sensor and metasurface for light manipulation in optical communic…
Abstract Agglomerates of a few μm of the yellow phosphor La3BaSi5N9O2:Ce3+ are obtained by heating a mixture of LaF3, La(NH2)3, BaH2, Si(NH)2, and CeF3 in a radio frequency furnace under N2 (1600 °C, 10 h; cooling to 900 °C within 44 h).