Engineering

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The Virtual Filament Model

In the present work, a framework is proposed for studying autonomous agents which interact locally yet effect a globally coherent behavior. This problem of locally induced organization is ubiquitous in decentralized multi-robot environments and … Contents 1 A Continuum Approach to Formation

Mining waste and wetlands

This thesis gives a structural description of wetlands and some processes that are vital for the treatment of metal-polluted waters in wetlands. A number of factors affecting the productivity and useful lifetimes of treatment wetlands are also described. The sources of acid

Tailored Properties of Ferromagnetic Thin Films

Magnetic thin films and patterned nanostructures have been studied with respect to their magnetic properties using SQUID-magnetometry, magnetic force microscopy, electrical measurements, and micromagnetic calculations.Properties of vortex domain walls, trapped in Permalloy nanowires with artificial constrictions, were investigated experimentally and by numerical

Benzocyclobutene-based Electric Micromachines Supported on Microball Bearings: Design, Fabrication, and Characterization

This dissertation summarizes the research activities that led to the development of the first microball-bearing-supported linear electrostatic micromotor with benzocyclobutene (BCB) low-k polymer insulating layers. The primary application of this device is long-range, high-speed linear micropositioning. The future generations of this device

Design and Fabrication of Electrothermal Micromotors and Compliant Mechanisms for Spatial Parallel Micromanipulators

In this dissertation a new class of spatial micromechanisms employing compliant joints and electrothermal motors has been developed. The spatial micromechanisms contain three limbs driven by individual electrothermal linear motors to form multiple degree-of-freedom (DOF) manipulators. At the coaxial point of the