Magnetically programmable transport and assembly of colloidal particles

Benjamin Biron Yellen

doi:10.17918/etd-333

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Magnetically programmable transport and assembly of colloidal particles

Dissertation

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Magnetically programmable transport and assembly of colloidal particles

Benjamin Biron Yellen

Doctor of Philosophy (Ph.D.), Drexel University

Aug 2004

DOI:

https://doi.org/10.17918/etd-333

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Abstract

Electrical and computer engineering

Colloids

Magnetics

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.

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Title: Magnetically programmable transport and assembly of colloidal particles
Creators: Benjamin Biron Yellen - DU
Contributors: Gary G. Friedman (Advisor) - DU
Awarding Institution: Drexel University
Degree Awarded: Doctor of Philosophy (Ph.D.)
Publisher: Drexel University; Philadelphia, Pennsylvania
Resource Type: Dissertation
Language: English
Academic Unit: Electrical and Computer Engineering; College of Engineering; Drexel University
Other Identifier: 333; 991014632939004721

Magnetically programmable transport and assembly of colloidal particles

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