Programmable Magnetics for Microscopic Assembly, Metamaterials, and Robots

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Abstract
Information is the foundation for creating active, functional systems at the smallest scales. Biology integrates information into nano- and microscale systems taking a bottom-up approach, starting with DNA to create proteins that enable advanced functionality. In order to build synthetic microsystems that can mirror the functionality of biology, we require a scalable information technology that can be integrated into top-down microfabrication schemes. In this thesis, we show that programmable magnetics is an invaluable tool for building a range of functional, information-rich microsystems capable of assembly and movement. We begin by presenting single domain nanomagnets that can be sequentially programmed for encoding information in microsystems. Using a hybrid fabrication strategy based on semiconductor manufacturing techniques, we integrate programmable nanomagnets into rigid micro-panels that can be released into solution and assembled via specific magnetic dipole interactions. We then introduce nanometer-thick membranes from atomic layer deposition. Utilizing their incredibly low bending energies, we employ ALD membranes as flexible scaffolding in shape-morphing micromechanical systems. Finally, we combine programmable nanomagnets and flexible glass membranes for adaptive magneto-mechanical systems that scale down to optical wavelengths. Throughout this thesis, we will address the applicability of these platforms to a variety of fields including self-replication, optical and mechanical metamaterials, and robotics.
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142 pages
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2022-05
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McEuen, Paul L.
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Shepherd, Robert F.
Shan, Jie
Degree Discipline
Applied Physics
Degree Name
Ph. D., Applied Physics
Degree Level
Doctor of Philosophy
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Government Document
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Attribution-NonCommercial-ShareAlike 4.0 International
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dissertation or thesis
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