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 28 for “"Magnetic forces"”.
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Magnetic forces for surface-based bioanalysis in microfluidic devices
… aspects of particle handling utilising magnetic forces were investigated. 1) The use of single magnetic particles as mobile solid-supports in a continuous flow system for bioanalysis. 2) The use of diamagnetic repulsion forces for label-free on-chip particle handling.For the continuous …
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Magnetic Forces for Intrusion of Buccal Segments in Dolichofacial Individuals with Anterior Open Bite : A Report of Six Cases
… open bite in dolichofacial individuals with magnetic forces has been studied. The attempt was made to intrude buccal segments by using interarch magnets set in repulsion in order to correct the anterior open bite of six dolichofacial patients. It was expected to intrude the posterior sections …
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Elsewhere: In Defense of Daydreaming
… I set circular, electric, acoustic, and magnetic forces in motion and allow them to coalesce freely in the hopes of synthesizing unexpected moments of beauty, connection, and harmony.</p>
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Novel Implant Designs In Magnetic Drug Targeting
… approaches have been proposed, one of which is magnetic drug targeting (MDT). The concept of MDT is to use drug carriers that contain a magnetic component and guide these carriers to a specific site with the aid of an external magnetic source. These magnetic drug carrier particles (MDCP) can be …
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The actuated Workbench : 2D actuation in tabletop tangible interfaces
… Workbench is a new actuation mechanism that uses magnetic forces to control the two-dimensional movement of physical objects on flat surfaces. This mechanism is intended for use with existing tabletop Tangible User Interfaces, providing computer-controlled movement of the physical objects on the …
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The role of ambipolar diffusion in the formation of interstellar cloud cores and protostars
… temperatures, and strengths of well-ordered magnetic fields imply that magnetic forces, transmitted to the neutral fluid through collisions with ions, dominate thermal forces in supporting these objects against self-gravity. The anisotropy of the Lorentz force, which is always perpendicular …
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The role of ambipolar diffusion in the formation of interstellar cloud cores and protostars
… temperatures, and strengths of well-ordered magnetic fields imply that magnetic forces, transmitted to the neutral fluid through collisions with ions, dominate thermal forces in supporting these objects against self-gravity. The anisotropy of the Lorentz force, which is always perpendicular …
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Evaluation of Universal Docking Solutions for Autonomous Underwater Vehicles
… the Tapered Funnel Docking Station and the Magnetic Hub Docking Station. The Tapered Funnel features a conical entry that progressively narrows to accommodate various AUV diameters. The Magnetic Hub passively secures the AUV using magnetic forces and an external appendage guided into …
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Magnetic Images & A Novel Stable Ferro-Magnetic Suspension
… for their spectacular demonstrations of diamagnetically levitated living animals. My MS research is an investigation to develop a novel magnetic suspension capable of operating under ambient conditions without any cryogenics. The physical problem is to freely suspended an object, the proof …
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Development of a test of Newton's law of gravitation at micrometer distances using a superconducting spherical torsion balance
… for such experimental signatures we developed a magnetically levitated cryogenic torsion balance, the SSTB, and a set of masses with modulated density across their surfaces. The lateral force has to be measured as one mass is moved in front of the other with a micropositioner without any …
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Mag Feet : a robotic device for the inspection of steel bridge structures
… the surface using finite (and relatively small) magnetic forces, it may fall due to the reaction forces caused by the swing- up motion. To prevent failure modes, an optimal swing-up trajectory was designed so that the maximum reaction force during the trajectory was minimized. The trajectories …
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Continuous flow processes on single magnetic and diamagnetic particles in microfluidic devices
Magnetic microparticles have seen increasing interest in (bio)chemical processes in recent years due to their various surface functionalities, high surface-to-volume ratio, small sizes, and ease of manipulation via magnetic fields. However, conventional reactions and assays that use magnetic …
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Single Molecule Force Extension Measurement on Semi-Flexible Biopolymers Using Magnetic Tweezers
… DNA. Single DNA molecules are studied using magnetic tweezers and an inverted fluorescence microscope. Magnetic forces in the piconewton range are applied to individual DNA molecules, and the relative chain extension due to applied force is directly measured and shown to be between 15% and …
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Self-assembly of magnetic nanoparticles: A tool for building at the nanoscale
… explores the use of an externally applied magnetic field to organize magnetic nanoparticles into microstructures of desired shape. It extends to proofs of concept towards applications in material design and tissue engineering. First, external control over dipolar self-assembly of magnetic …
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Magnetic assisted statistical assembly
… of this thesis is to develop a process using magnetic forces to assemble micro-components into recesses on silicon based integrated circuits. Patterned SmCo magnetic thin films at the bottom of recesses are used to provide forces to orient, align and retain micro-devices on silicon. The …
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Magnetophoretic cell clarification
… around a central column to create areas of high magnetic field at the column walls and areas of low magnetic field at the centerline, inducing non-magnetic particles to concentrate at the centerline, where they were removed through a coaxial central outlet tube at the top of the column. Depending …
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Verification and Validation of Magnetohydrodynamics Simulations of Electrically Exploded Conductors
Dense Z-pinches, magnetically-driven flyer plates, and electrically exploded wires and foils all take advantage of the extreme Lorentz forces and/or Ohmic heating generated by intense electrical current pulses through an initially solid conductor. Magnetohydrodynamics (MHD) simulations are used to …
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Analysis And Modeling Of The Eds Maglev System Based On The Halbach Permanent Magnet Array
Electro-dynamic suspension (EDS) Magnetic levitation (Maglev) with its advantage in maintenance, safety, efficiency, speed, and noise is regarded as a leading candidate for the next generation transportation / space launch assist system. The Halbach array due to its unique magnetic field feature …
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Characterisation of Local Mechanical Properties in Living Tissues
… of tissues remains unknown. Four-pole electromagnetic tweezers have been developed to probe the mechanical properties of living embryonic tissues that are undergoing active morphogenetic development. The device is capable of generating magnetic forces in the order of nano-Newtons on a grafted …
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Modular LEGO brick microfluidics
… sensing light, sorting with inertial and magnetic forces, and repeatably positioning a smartphone camera, and characterize their performance. Then, I fabricate and measure LEGO-like bricks made by FDM and SLA three-dimensional printing, showing that they can integrate with injection-molded …
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