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Showing 1 to 20 of 22 for “"preferential orientation"”.
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biaxial alignment in sputter deposited thin films
Thin films which exhibit a preferential out-of-plane orientation as well as a preferential in-plane orientation are called biaxially aligned. In this work, a magnetron is used to deposit such biaxially aligned and to investigate the underlying mechanism. Understanding the biaxial alignment …
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Electrochemical Synthesis of Single Crystal Metal Nanowires
… in various experiments. Cu nanowire arrays with preferential orientations can be successfully synthesized into the Anodic Aluminum Oxide (AAO) templates with optimized electrodepositing conditions at room temperature. The nanowires embedded in AAO were released and dispersed on Si/SiO<sub>2</sub> …
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Molecular order at polymer surfaces via X-ray photoelectron spectroscopy
… all materials investigated present some kind of preferential and reproducible ordering effect. The ordering ef feet can be present in different forms, such as preferential segregation of a crystalline block to the surface, segregation of a component of different crystalline structure to the …
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Nanoscale magnesium as a hydrogen storage material
… Mg/Ti thin film samples. XRD confirmed a (002) preferential orientation of the films in agreement with literature. Differences in the sputtering conditions of the Mg/Ti samples also showed differences in their XRD patterns. Furthermore, the XRD results also showed the existence of intrinsic …
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A continuum model for needlepunched nonwoven fabrics
… directions, depending on the existence of a preferential orientation in the fiber arrangement and/or in the pattern of inter-fiber bonding/entanglement. Second, the mechanisms of deformation include elastic and inelastic components, accompanied by an irrecoverable evolution of the texture of …
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Investigation of Momentum and Heat Transfer in Flow Past Suspensions of Non-Spherical Particles
… resulting in suspensions which have a mean preferential orientation. It is shown that the mean suspension drag varies linearly with the orientation parameter, which varies from -2.0 for particles oriented parallel to the flow direction to 1.0 for particles normal to the flow direction. This …
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Optimization of copper oxide film by dip coating technique for oxygen detection
… crystallize along the (002) and (111) phase with preferential orientation along the c-axis of the CuO monoclinic structure. These films exhibit a uniform and homogeneous flower-like structure. The surface roughness of these films were 70.18 nm and the films thickness were found to be 0.76 μm. The …
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Growth, structure and magnetic properties of magnetron sputtered FePt thin films
… hard magnetic L10 phase, (ii) to realize c-axes preferential oriented layers independently from the substrate nature and (iii) to control layer morphology supporting the formation of FePt - L10 self-organized isolated nanoislands towards an increase of the signal-to-noise ratio. In this study, dc …
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Microstructural Development and Superconducting Parameters of the YBa2Cu3O7-delta Coated Conductor
… a Ni-Fe alloy. When cold-rolled, NiFe develops a preferential orientation and upon annealing at an elevated temperature, undergoes primary recrystallisation to form grains with the cube texture {100}<001>. The recrystallisation process and the texture of the tapes has been examined and various …
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Research and development of CuInSe[2]-based photovoltaic solar cells.
… are polycrystalline with a (112) preferential orientation of the chalcopyrite structure. CIS films appear dense with a good mechanical adhesion to the conducting oxide substrates and show crack-free surfaces with spherical grains electrically well connected to each other with a …
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Cross-Sectional Scanning Tunneling Microscopy of Silicon-Based Heterostructures Andp-N Junctions
… It is found on Si(111)2x1 that there is no preferential orientation for atomic steps, and the step structures are determined by the hexagonal symmetry of the atomic arrangement and the pi-bonded chains on Si(111)2x1. Two types of Si adatoms on Si(111)2x1 are identified. One sits on top of a …
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I, Crystallization and morphological studies of ICI's intermediate temperature semicrystalline (ITX) polymer and, II, The influence of deformation (shear strain) during bond formation on adhesive bond strength
… to load) during preparation to induce molecular orientation within the adhesive, before the mechanical properties were evaluated. The measured DAF 821 tensile strengths were similar, however, the Surlyn bond strengths varied in that sheared bonds were weaker than control bonds. Linear dichroism …
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Phase behavior of disk-coil molecules : from bulk thermodynamics to blends with block copolymers
… to the axes of all the cylinders. This preferential orientation is induced by the minimized stretching energy of the BCPs for these configurations. For the system with multiple discotic molecules confined within the BCP cylinders, all director vectors are aligned with the axial direction …
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Polymer Structure and Dynamics in Nano-Confinements: Polymer Nanocomposiets and Cylindrical Confinement
… decreases. A theory, which assumes that the preferential orientation of the end-to-end vector can be directly transferred to the preferential orientation of primitive path steps, compares favorably to our simulations as a function of pore diameter. From the simulation, we also found that the …
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The development and demonstration of a practical methodology for fine particle shape characterisation in minerals processing
… aspect ratio measurements. The possibility that preferential orientation of particles would introduce bias to the 2-D cross-sectional measurements was also addressed through comparison of roundness distributions measured from orthogonal cross-sections of a particulate sample mounted within a …
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Mechanistic and Structural Studies of Salicylate Biosynthesis in Pseudomonas aeruginosa
… activities in three reactions may due to the preferential orientation of substrates in the active site.
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Biomechanische Untersuchungen am Fesselgelenk (Articulatio metacarpophalangea) des Pferdes
… The method of split lines showed no definite preferential orientation of the collagen fibres in the subchondral bone of the fetlock joint. Therefore it is not possible to draw any conclusions concerning physiological incongruence of this articulation. In animals from 3 months to 2 years of age …
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Interface Effects and Deposition Process of Ionically Self-Assembled Monolayer Films: In Situ and Ex Situ Second Hamonic Generation Measurements
… oppositely-charged surface, which results in net orientation of the chromophores. Some of the net orientation is lost during the deposition of the next NLO-inactive layer as this layer orients some of the chromophores away from the substrate. A disadvantage of the polymer ISAM deposition method is …
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Electrodeposition of semiconductors for applications in thin film solar cells
… identified exhibited cubic phase having (111) preferential orientation. Working solar cell devices were fabricated over a range of growth voltages with superior performance being observed for materials deposited between -0.620 to -0.650 V vs saturated calomel electrode (SCE). Furthermore high …
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Thermal anisotropy and conductivity studies of nylon 66
… strength, degree of crystallinity, molecular orientation, and the changes resulting from the rolling-annealing treatment of nylon 66. A survey was made of the literature on the thermal conductivity of nylon in particular and non-metallic solids in general, of anisotropy of thermal …
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