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Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/333

Title: Magnetically programmable transport and assembly of colloidal particles
Authors: Yellen, Benjamin Biron
Keywords: Electrical and computer engineering;Colloids;Magnetics
Issue Date: 31-Aug-2004
Abstract: This thesis describes the development of tools and methods for enhancing micro-assembly technologies by adding a new means for micro-controlling objects suspended in fluid. Arrays of micro-controllers are formed in thin magnetic film through magnetization patterning, which is often employed in data storage applications. The patterned magnetic film is used in combination with externally applied magnetic fields to manipulate colloidal species in fluids. The micro-controllers have the ability to array particles into chosen patterns on a surface, temporarily or permanently, and the ability to create micro-circulation in the surrounding fluid for transporting, concentrating and sorting colloidal objects. Moreover, the magnetic micro-controllers are capable of being programmed, using traditional magnetic recording methods, to attract or repel objects from particular sites on a surface. Explanations and experimental demonstrations of magnetically programmable assembly processes will be provided in the following chapters, along with a discussion of potential applications.
URI: http://hdl.handle.net/1860/333
Appears in Collections:Drexel Theses and Dissertations

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yellen_thesis.pdf5.47 MBAdobe PDFView/Open
5hz rotation.avi2.59 MBUnknownView/Open
40x magnetic stirring plate.avi16.34 MBUnknownView/Open
boundaries.avi13.53 MBUnknownView/Open
ferrofluid jumping.avi32.8 MBUnknownView/Open
globs.avi2.51 MBUnknownView/Open
moving bead square track.avi26.41 MBUnknownView/Open
programmable dynamic assembly.avi2.57 MBUnknownView/Open
Weak Field Mode Horizontal Rotation.avi2.56 MBUnknownView/Open
5hz rotation.avi2.59 MBUnknownView/Open
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