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 7 of 7 for “"Superparamagnetic beads"”.
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Polymer coated superparamagnetic beads walking on polymer coated surface
… work examines walkers that are created using superparamagnetic beads placed in a rotating external magnetic field. Dipoles align in the beads so they assemble into rotors. These rotors follow the rotating magnetic field and are able to translate across a surface. This work looks at the effect …
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Modelling the movement of superparamagnetic beads engulfed in endothelial cells
… poly-caprolactone scaffold is facilitated with superparamagnetic beads introduced to the cells by phagocytosis. It is shown that the dominant motion of the affected cells is determined by the viscous drag of the medium and the amount of coupling with an externally imposed magnetic field. An …
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Magnetic domain walls for on-chip transport and detection of superparamagnetic beads
Surface-functionalized superparamagnetic (SPM) microbeads are of great interest in biomedical research and diagnostic device engineering for tagging, manipulating, and detecting chemical and biological species in a fluid environment. At the same time, lab-onchip technologies have grown popular due …
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Developing Magnetic Tweezers for Magnetic Material Manipulation
… interactions between a soft magnetic tip and a superparamagnetic bead suspended in liquid. We studied the effects of tip taper length and current in the solenoid surrounding the tip on resulted forces. An axisymmetric 2D model using COMSOL Multiphysics has also been developed to analyze the …
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Magnetostatic Modeling for Microfluidic Device Design
… <p>For several years, biologists have used superparamagnetic beads to facilitate biological separations. More recently, researchers have adopted this approach in microfluidic devices [1-3]. This recent development and use of superparamagnetic particles in biomedical and biological …
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Magnetic bead-based DNA extraction and purification microfluidic chip
… steps are performed using functionalised superparamagnetic beads suspended in the cell lysis buffer in a circular chamber that is sandwiched between two electromagnets. Non-uniform nature of the magnetic field causes temporal and spatial distribution of the beads within the chamber. This …
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Blood clotting inspired polymer physics
… that investigates the possibilities of using superparamagnetic beads as a tool for hydrodynamic propulsion by assembling these beads into "rotors" near a surface to create micro-walkers that have interesting applications in self-assembled microfluidic chips.