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Showing 1 to 20 of 32 for “"shape anisotropy"”.
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Synthesis and rheology of pH-responsive particles with shape anisotropy
… is used to produce large quantities of shape anisotropic, amphoteric particles in a size range of about 1 µm. Two different kinds of shape anisotropic particles are prepared for comparison to study the effects of incorporating pH-responsive groups on the properties of suspensions …
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Particle shape anisotropy and its effects in AlNiCo and Fe-Cr-Co magnet alloys.
… which initially produces an homogeneous, fine shape-anisotropic particle microstructure, and by subsequent diffusion during heat treatment achieves a highly ferromagnetic state; all of which are necessary conditions for good permanent magnet properties. The results indicates that some …
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The effects of concentration, interaction, size distribution and shape anisotropy on rheology of colloidal mixtures
… particle size distribution, and particle shape, which have effects on dynamic arrest transitions, jamming conditions and steady flow properties of dense suspensions. A special attention is paid to changes in properties at volume fractions exceeding the dynamic arrest transitions and …
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Hard, Soft, and Sticky Spheres for Dynamical Studies of Disordered Colloidal Packings
… is revealed to arise from variations in shape anisotropy of the rod-like surfactant micelles. This shape anisotropy increases with increasing sample temperature. By fitting the colloidal interaction potentials to theoretical models, we extract the rod-like micelle length and shape …
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Magnetic properties of lithographically patterned thin film magnetic elements for magnetic random access memory applications
… results have been compared with the theoretical shape anisotropy theory to try finding a guideline for controlling magnetic properties of patterned elements.
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Structure, microstructure and magnetic properties of electrodeposited Co and Co-Pt in different nanoscale geometries
… are strongly affected by the magnetocrystalline anisotropy of the hexagonal phase that competes with the shape anisotropy of the thin film geometry. Co-Pt nanowires have been prepared within alumina templates at different deposition potentials between -0.6 and -0.9VSCE changing the composition …
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Magnetic Logic Gate Using Ferromagnetic Hexagonal Nanodots
… and vortex state on the dependency of uniaxial shape anisotropy has been discovered. Based on the characterized magnetic state of each hexagonal nanodot, several acceptable magnetic switching performances were obtained from hexagonal nanodots at single domain state. Magnetic logic gate using …
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Interaction Effects in Nickel Nanowires Arrays
… effects of the magnetostatic interactions and shape anisotropy.
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Fabrication and Magnetic Property Investigation of Metallic Nanowire Arrays
… direction and the nanowire arrays have obvious shape anisotropy. The FMR spectra indicated that the resonant field value is angular and aspect ratio dependence.</p>
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In situ magnetoresistance measurements during patterning of spin valve devices
… thin films was investigated as the shape anisotropy was increased using optical lithography to pattern wire arrays. These structures show a progressive increase in coercivity and a transition between single and two-stage reversal with increasing milling depth. A similar patterning …
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Dynamics Of Anisotropic Gold Nanopartilces In Synthetic And Biopolymer Solutions
… bovine serum albumin (BSA), and the effect of shape anisotropy on the dynamics within a crowded solution of spheres. Multiphoton fluctuation correlation spectroscopy (MP-FCS) technique was used to investigate the translation and rotational diffusion of AuNRs. For polymer solutions, we …
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Growth and magnetoelastic behavior of b-axis-oriented dysprosium
… of fundamental magnetoelastic interactions and shape anisotropy.
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Vertically and Horizontally Self-assembled Magnetoelectric Heterostructures with Enhanced Properties for Reconfigurable Electronics
… larger α, and enhanced strain-induced magnetic shape anisotropy compared with the single-phased ME nanomaterials; (b) creating a vertically integrated heterostructure with large α, lower loss, and higher efficiency; and (c) investigating the stable magnetization states that this heterostructure …
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Investigation of physical properties of mesoporous NANO-Ti02 for dye-solar
… mobility «u»: Hence nano-TiO2 with substantial shape anisotropy such as TiO2 nanorods/ nanotubes or 1-D porous TiO2 structures would exhibit less interfacial scattering as a result of a larger lifetime and efficient light trapping. This trapping effect would offer a better electron transport in …
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Synthesis and Crystallization of Anisotropic Polymer Colloids
… to synthesize polymer colloids with chemical and shape anisotropy. Two types of particles consisting of interpenetrating spheres, or dicolloids, are synthesized with length scales varying from approximately 300 nm to roughly 1.2 microm. For the first type of dicolloid, the seed and protrusion …
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Incorporating double-heterojunction in anisotropic semiconductor nanocrystals for novel optoelectronic applications
… may be especially promising since the inherent shape anisotropy can provide additional benefits of directionality and accessibility in band structure engineering and assembly. Here, we develop double heterojunction nanorods where two distinct semiconductor materials with type II staggered band …
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Magnetic properties of small multi-layered rings
… elliptical rings show an interplay between shape anisotropy and exchange anisotropy. When both the exchange bias and applied field are oriented along the major axis, an elliptical ring shows a shifted hysteresis loop and strong in-plane anisotropy. The switching behavior and vortex state …
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Nanofabrication towards biophotonics
… (elliptical) nanoholes and shows how the shape anisotropy induces polarisation sensitive transmission spectra, in both simulations and fabricated arrays. The potential use of such samples as visible and NIR tag for anti-counterfeiting applications is demonstrated. Finally, chapter 5 gives …
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Contemporary Problems in Aerosol Aggregation and Gelation
… which is recently shown to be related to their shape anisotropy. With the advent of mass-based aerosol particle classifiers, aggregates morphology can be alternatively characterized with a power-law relationship connecting their mass and mobility diameter, which is parameterized with a pair of …
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Computer simulation studies of magnetic nanostructures
… novel devices. For nanomagnets the geometric shape of the object becomes more important than other factors such as magnetocrystalline anisotropy . the smaller the object, the more strongly the shape anisotropy affects the hysteresis loop.<br/><br/>We investigate the micromagnetic behaviour of …
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