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 20 of 30 for “"Micro-devices"”.
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Wearable energy-harvesting micro devices /
… is wearable energy-harvesting mircro devices. They are designed to harvest energy from the surrounding environment to supply power on the go for small electronic devices and sensors. We used low-cost and scalable fabrication methods that make them appropriate for mass production …
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Artificial Micro-Devices: Armoured Microbubbles and a Magnetically Driven Cilium
Micro-devices are developed for uses in targeted drug delivery and microscale manipulation. Here we numerically and analytically study two promising devices in early stages of development. Firstly, we study Armoured Microbubbles (AMBs) which can self-propel as artificial microswimmers or facilitate …
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Three-dimensional micro fabrication of active micro devices using soft functional materials
Made available in DSpace on 2012-02-01T00:48:26Z (GMT). No. of bitstreams: 3 Lee_HoWon.pdf: 4405248 bytes, checksum: 41d914103a408ca170c48385421652fa (MD5) license.txt: 4054 bytes, checksum: 2175a1ca06310f92256240bfeceb9bbb (MD5) Lee_Ho Won.docx: 54614972 bytes, checksum: …
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Micro & nano scale mechanical testing and assembly with applications to metal based microsystems
Metal-based high-aspect-ratio microscale structures (HARMS) are fundamental building blocks for functional metallic micro devices. This dissertation focuses on addressing several problems in fabrication and assembly of metal based microchannel devices. First, the materials’ responses to mechanical …
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Design of test bench apparatus for piezoelectric energy harvesters
… bench for the characterization of piezoelectric microelectromechanical system (MEMS) energy harvester being developed by the Micro & Nano Systems Laboratory research group at MIT. Piezoelectric MEMS energy harvesters are micro-devices that are able to harvest energy from their ambient vibrations …
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MEMS turbomachinery rotordynamics : modeling, design and testing
… the successful operation of high-power-density micro-devices lies in the stable operation of the bearings supporting the high-speed rotating machinery. This thesis presents the analysis, design, microfabrication, testing and operation of high speed micro-hydrostatic gas bearings for …
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Optimizing inventory levels using financial, lifecycle and forecast variance data
… Finally, the 2006 acquisition of ATI by Advanced Micro Devices (AMD) offers unforeseen flexibility, scale and challenges to the outsourced semiconductor supply chain.
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Microstructure, Tunable and Pyroelectric Properties of Laser-Ablated Ba (Zr0.25 Ti0.75) O3 Thin Films
Micro-devices such as tunable varactors and infrared sensors have been of great interest in many applications such as wireless communication and thermal imaging. Thin film capacitors made of ferroelectric materials have been widely studied for use as active elements in those devices due to their …
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Microfluidic biomechanical and electrical devices for rapid analysis of cells and organelles
This thesis focuses on micro devices aimed at rapid analysis of cells and subcellular organelles. These devices take advantage of microfabrication techniques to create environment suitable for biomechanical and biochemical stimulation of cells, to break cell membranes to extract the intracellular …
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From elastic electrodes to fabric systems
… hold promise for wearable sensors and devices, as well as flexible and conformable electronics. In recent years, research has focused on realizing specific devices or even system level functions within a single fiber. Harnessing thermal drawing, significant developments in fiber …
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Transparent Asynchronous Transmitter Receiver Interface (TAXI) communications for fiber optic data links
… considerations. A new chip-set from Advanced Micro Devices offers a high performance integrated alternative to traditional serial/parallel data transfer techniques. The Transparent Asynchronous Transmitter Receiver Interface chipset offers a new means to establish a transparent high speed …
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Rapid Prototyping Of Microfluidic Packages
… a tremendous need for communication between the micro-device and the macro world. A standard protocol or at least multiple standards would be of great use. Electrical connections have been standardized for many uses and configurations by the integrated circuit industry. Standardization in the IC …
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Low threshold vertical cavity surface emitting lasers integrated onto Si-CMOS ICs using novel hybrid assembly techniques
… Individual oxide-apertured 850 nm AlGaAs VCSEL micro-devices discs, 8 Ctm tall and 55 ptm in diameter (pills), have been both bonded and electrically contacted within the dielectric stack of a commercially-fabricated silicon integrated circuit. To accomplish this, fully processed VCSEL device …
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Magnetic assisted statistical assembly
… a process using magnetic forces to assemble micro-components into recesses on silicon based integrated circuits. Patterned SmCo magnetic thin films at the bottom of recesses are used to provide forces to orient, align and retain micro-devices on silicon. The overall objective is to obtain …
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Prognostics and health management of light emitting diodes
… Light Emitting Diodes (LEDs) are optoelectronic micro-devices that are now replacing traditional incandescent and fluorescent lighting, as they have many advantages including higher reliability, greater energy efficiency, long life time and faster switching speed. Even though LEDs have high …
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Design of a fast cycle time hot micro-embossing machine
… will be a huge market for mass-produced polymer micro- devices. These devices include microfluidic "labs on a chip," micro-optical chips, and many others. Several techniques exist for producing micron-scale features in polymer materials. One of the most promising of these techniques is Hot …
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Development of Microfluidic Platforms for Electric Field-Driven Drug Delivery and Cell Migration
Recent technologies in micro-devices for investigation of functional biology in a controlled microenvironment are continually growing and evolving. In particular, electric-field mediated microfluidic platforms are evolving technologies that have significant applications in drug delivery and cell …
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Optical Fiber Microstructures for Self-Contained Whispering Gallery Mode Excitation
… has its challenges and the prospects for microsphere applications have suffered because of the plight of this problem. The work in this dissertation details the fabrication and function of three new "press fit" spherical resonators. These etched fiber micro-devices were developed to meet …
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High fidelity simulations of electrokinetic phenomena in microfluidic devices
… is the primary method of fluid handling in micro-total analysis systems. Under external applied electric fields, electrokinetic micro-devices allow for innovative functionality in a wide range of microfluidic applications including sample injection, separation, rapid micromixing, and …
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Towards Active Monitoring of The Micro Transfer Printing Process
Current microelectronics and micro-electromechanical systems (MEMS) fabrication techniques are optimized for the production of very large volume of parts on a limited range of substrates. These processes have been designed to produce excellent results but still consume large amounts of time and …
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