Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 62 for “"Magnetic Force"”.
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Magnetic force microscopy studies of mesoscopic superconducting structures
… This dissertation describes a new mode of magnetic force microscopy (Φ0-MFM) for investigating vortex and fluxoid sates in mesoscopic superconducting (SC) structures. The technique relies on the magneto-mechanical coupling of a MFM cantilever to the motion of fluxons. The novelty of the …
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Study of current measurement in magnetic force microscopy
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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KINESIN-MICROTUBULE INTERACTIONS DURING GLIDING ASSAYS UNDER MAGNETIC FORCE
… A major difficulty in determining the force-velocity relationship for multiple motors is determining the number of motors that are moving a cargo against an opposing load.
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Magnetic structure in manganites as probed by magnetic force microscopy
This dissertation describes the use of magnetic force microscopy to directly measure the magnetic structure of a sample on a microscopic level. Our magnetic force microscope has been operated at temperatures ranging from 293 to 4.3 K and fields ranging from 0 to 3 T, providing a method for imaging …
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Imaging vortex dynamics in Josephson arrays using magnetic force microscopy
… the vortex motion. Using a technique based on magnetic force microscopy, we can directly measure the resonant motion of vortices present in a superconducting lattice. We use a scanning magnetic tip to trap a small number of vortices in a superconducting Josephson junction array near the tip. By …
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A data storage system based on patterned magnetic media and magnetic force microscopy
… systems. Periodic arrays of nanostructured magnetic pillars have been proposed as a patterned medium for high density data storage. In patterned media, each single domain magnetic pillar is used to store one bit of data. This media can theoretically provide an extremely high recording …
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Low-temperature magnetic force microscopy with a simple design: analyzing the magnetic domains of a simple hard disk drive
… introduces the theoretical background for the Magnetic Force Microscope (MFM) and the theoretical basis for magnetic domains. The second part will address issues we have come across on previous designs and how our newer design overcomes these issues. Along with the construction of our low …
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Theoretical studies of stray field images of magnetic systems
Research in magnetic recording is currently at a stage where an understanding of the magnetic microstructure of recording media is vitai for the continual improvement in recording performance and the achievement of higher recording densities. Experimental techniques such as Lorentz Imaging and …
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Magnetophoretic focusing on submicron particles dispersed in a polymer-stabilized magnetic fluid
… upon the application of an inhomogeneous magnetic field. The overall goal of this work was to investigate the magnetophoretic focusing of non-magnetic particles suspended in magnetic fluids, which are colloidal suspensions of nano-sized magnetic particles. With the magnetic fluid as the …
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Synthesis, Characterization and Properties of Nanostructured Materials by Template-Directed Method
… of the nanowires and their alignment under the magnetic force were observed under the optical microscope.</p>
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CRYOGENIC ATOMIC FORCE MICROSCOPE FOR CHARACTERIZATION OF NANOSTRUCTURES
… design and applications of a cryogenic atomic force microscope (AFM) for characterization of nanostructures. The cryogenic AFM with a conductive tip can measure DC current through nanostructures. We use quartz tuning fork (QTF) as the force sensor. Unique coarse z motor design provides reliable …
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Star formation in the presence of magnetic fields: Molecular cloud core formation and dynamical contraction due to ambipolar diffusion; a simulation with axial symmetry
… galaxy. Observed densities, temperatures, and magnetic field strengths imply that well-ordered magnetic fields dominate thermal pressure in supporting these objects against self-gravity. The magnetic force is transferred to the neutrals through collisions with ions. Because the degree of …
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Magnetic properties of lithographically patterned thin film magnetic elements for magnetic random access memory applications
… With the aim of assessing the behavior of future magnetic random access memory (MRAM) devices, the magnetic properties of the patterned elements, including magnetization switching mechanisms, switching field distribution, magnetic thermal stability, and magnetostatic interactions, have been …
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Developing Magnetic Tweezers for Magnetic Material Manipulation
… materials. Among current available methods, the magnetic tweezers show high efficiency and cost effectiveness in generating strong and direction adjustable interactions with magnetic materials. Since our research group has extensive experience in synthesizing magnetic nanostructures, it is of …
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An Urban Edge for Innovation & Reservation: create a figurative stage for students to perform their lives
… the edge of the oval Drillfield; c. create magnetic force between the proposed building and the existing War Memorial Chapel; d. translate the idea into tectonics.
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Nano-imaging to Determine the Interstitial Nature of Mn(II) Doping in 2D Halide Perovskites
… resolved photoluminescence measurements, and magnetic force microscopy on the inorganic 2D perovskite Cs2PbI2Cl2, we show that doping Mn2+ into the structure results in a lattice expansion. The observed lattice expansion contrasts with the predicted contraction expected to arise from the …
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The Effects of Actinomycin D and Acth on Circadian Steroidogenesis of Hamster Adrenals
… geophysical factors such as electrostatic and magnetic force fields (Brown, 1960, 1965).
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Fabrication, characterization, and micromagnetic analysis of lithographically defined particle arrays for applications in data storage
In this thesis, the magnetic behavior of nanostructured ferromagnetic particle arrays are studied by experiments and numerical micromagnetics for ultra-high-density data storage applications. 1 00nm or 200nm period arrays of nanostructured nickel, cobalt, and cobalt phosphorus are fabricated by the …
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Fabrication and characterization of nanostructured magnetic particles for applications in data storage
Arrays of nanostructured magnetic particles ('nanomagnets') have potential applications in ultra-high-density data storage devices and dynamic magnetic memories, and are model systems for the study of magnetic phenomena at deep sub-micron length scales. We use interference lithography to pattern …
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Magnetic iron oxide nanoparticles: synthesis, characteristics, magnetic behavior, and biomedical applications
Magnetic iron oxide nanoparticles are attracting increasing attention due to their interesting properties that can be applied in a great number of applications such as catalysis and biomedicine. This thesis focuses on the synthesis, characteristics, and biomedical applications of iron oxide …
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