Materials Literature
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This paper presents a modeling of vector magnetic properties including effects from residual stress in electrical steel sheets. In simplification we have started development of the modeling from the complex-variable E&S (CES) modeling and additionally considered magneto-elastic effect. We call this stress-complex E&S…
Metamaterials are man-made composite materials, fabricated by assembling components much smaller than the wavelength at which they operate (1). They owe their electromagnetic properties to the structure of their constituents, instead of the atoms that compose them. For example, sub-wavelength metal wires can be arrang…
We demonstrate label-free detection of lipid vesicles and polystyrene beads freely diffusing in aqueous solution using surface enhanced Raman scattering (SERS). The signals observed enable real-time identification and monitoring of individual particles interacting with the SERS substrate. SERS is demonstrated as a lab…
Profiling of stress as a function of depth is an important tool for nondestructive evaluation and can be used to prevent catastrophic failures in structures. In this work, the underlying theory of a new model for the depth profiling of stress in ferromagnetic structures based on the magnetic Barkhausen method is inves…
We report a first-principles study of electron transport through armchair graphene nanoribbon adsorbed on Ni(111) and Cu(111) surfaces. The contact with Ni electrodes induces a broad transmission spectrum, mixed transmission profiles in the Brillouin zone, and an opening of multichannel for transmission near the Fermi…
Surface-initiated ethylene “living” polymerization with covalently tethered Pd–diimine catalysts represents a novel technique for covalent surface functionalization of silica nanoparticles with polyethylene (PE) brushes. In this paper, we report on the successful tuning of various structural parameters of PE brushes i…
The YSZ electrolyte fuel cell with a ternary cathode composed of LSM-YSZ-Ce(0.9)Mn(0.1)O(2-δ) exhibits ca. 2.6 times higher current density than that with a binary cathode composed of LSM-YSZ at 600 °C.
Abstract The growth of epitaxial graphene on SiC surfaces is accompanied by the evaporation of Si atoms during the growth process. The continuous loss of Si atoms takes place even after the surface graphene layers are formed. Understanding the atomic transport process involved is critical in establishing a growth mech…
Fe81Ga19is a high magnetostrictive material which exhibits soft magnetic behavior. The hysteresis loops of different heat treated Fe81Ga19ring-shaped samples were measured as a function of the frequency. The frequency dependence of the coercivityHcwas analyzed using different eddy-current-based models. The obtained re…
In this paper, we show that a localized surface plasmon polariton in a plasmonic sandwich structure made of a (metal elliptical disc)/(dielectric spacer)/(metal film) can be used as an efficient angle-independent polarizer in the mid-infrared wavelength regime. The elliptical disc structure is characterized by using a…
Knowing the effect of the higher harmonics of the magnetic field on the magnetostrictive behavior of electrical steel is highly beneficial for the noise aspects. In this work, the effect of a third harmonic with a variety of amplitudes and phase delays is extensively studied. Magnetostriction measurements are performe…
Abstract This article describes a technology for the thermoplastic treatment of collagen. Based on limed, untanned cattle pelts a fine powder, termed Thermoplastic Collagen (TC) is produced, which can be processed using conventional thermoplastic techniques. Central step in the production of TC is the partial denatura…
Vertical graphene heterostructures made up of graphene layers separated by boron nitride spacers allow for novel ways of tuning the interactions between electrons. We study the possibility of electron pairing mediated by modified repulsive interactions. Long-range intravalley and short-range intervalley interactions g…
A multistep self-assembly process produced one-dimensional nanostructures that consisted of a monolayer membrane functionalized with a ligand that acted as a coordination site for an anticancer Pt complex. Control of the mode of the networks of intermolecular hydrogen bonds within the monolayer membrane of the nanostr…
Trace addition of Cu is an effective method to improve the coercivity of sintered NdFeB magnets via improving the microstructure. The efficiency of Cu doping depends on the distribution of Cu in the multi-phase microstructure of the NdFeB magnet. To understand and control the Cu redistribution, the site preference of…
The understanding of phase behavior of copolymer brushes is of fundamental importance for the design of smart materials. In this paper, we have performed classical density functional theory calculations to study diblock copolymer brushes (A-B) in an explicit solvent which prefers the A block to B block. With increasin…
${\rm Fe}/{\rm Ni}_{\rm x}{\rm Zn}_{1-{\rm x}}{\rm Fe}_{2}{\rm O}_{4}$(${\rm x}=0.1$, 0.3, 0.5, 0.7, 0.9) soft magnetic composites were prepared by the chemical co-precipitation method. The effect of Ni content on the magnetic properties was discussed. The results of SEM, EDS and X-ray diffraction analysis indicate th…
Electrothermal transport and crystallization dynamics govern the speed and bit stability of multibit phase-change memory (PCM). This paper develops a transient simulation methodology incorporating electrical, thermal, and phase transition models to investigate multibit PCM cell structures and programming strategies. T…
We present a strong stretching theory model for microphase segregation of AB + AC block copolymer blends in which the B and C segments possess strongly attractive (hydrogen bonding) interactions. In microphase separated morphologies, we demonstrate that the attraction between the B and the C segments causes a bending…
Supported platinum nanoparticles in the presence of carbon monoxide in the 10 –6 –10 3 Pa CO pressure range were studied by grazing incidence small-angle X-ray scattering. Disruption and aggregation of platinum nanoparticles upon CO exposure are shown to occur in parallel. Particles smaller than a critical size of 1 n…