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 349 for “"miniaturized"”.
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Miniaturized Antenna for Satellite Broadband Application
… compatible with planar array configuration. The miniaturized antenna element is fabricated in an external facility, whereas the dielectric material is developed in-house. Simulations were conducted with ANSYS EDT (HFSS), which agree with the measured results.
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Enabling miniaturized grid-interface power conversion
Many of the most critical challenges of the twenty-first century revolve around energy and its management. Improved performance (efficiency, density) in electrical energy management systems require advancements in a number of areas - semiconductor devices, passive energy storage components, and a …
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pH control in a miniaturized bioreactor
A miniaturized bioreactor with a volume on the order of 100 [micro]l has been built with the aim of increasing the efficiency of the screening process for various microbial cultures. Unlike larger reactors currently in use, the current miniaturized design lacks a method of pH control. Without pH …
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Miniaturized Fluorescence Biosensor for Studying Neuronal Events
… This dissertation will report the fabrication of miniaturized fluorescence sensors for Ca2+, pH and Zn2+ analysis. In the first approach, liposomes (phospholipid vesicles) were used as miniaturized containers for fluorescent sensing reagents. Liposome-based fluorescence sensing technology offers …
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Miniaturized, Directional Antennas For Wireless Power Transfer
… of wireless power transfer. Next, two miniaturized antennas, an electrically small, circular polarized parasitic array antenna, and a miniaturized circularly polarized 2x2 array antenna, are introduced for possible use as wireless power reception antennas. Each antenna utilizes …
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Design Exploration of a Miniaturized Stirling Engine
… if this efficiency can be maintained in a miniaturized form [2]. This study delves into the design space of a miniaturized Stirling engine with a target input of 2Wth, which could be tailored for small-scale (mesoscale ~cm3 ) high-efficiency power generation or micro-cooling. Previous …
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Miniaturized Magnetostrictive Antennas for Wireless Sensing Applications
… been explored for easy and fast fabrication of miniaturized MES antennas down to sub-mm sizes from the amorphous magnetostricive film Metglas 2826 MB and their advantages and disadvantages have been studied. Laser micromachining is shown to be a more versatile method compared to fabrication …
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Developing & applying a miniaturized active microchip device
… spatial distribution and serious side effects. Miniaturized depot devices, implanted into the tissue surrounding the tumor resection site, could achieve a broad aggregate distribution profile. The capabilities of localized delivery can be enhanced by utilizing microelectromechanical systems …
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The Characterization of Hemodialysis Membranes in Miniaturized Dialyzers
… associated with hemodialysis. We developed a miniaturized dialyzer for use in small rats. The aim of this study was to investigate whether the miniaturized dialyzers can differentiate performance characteristics representing hemodialysis membrane and fiber design. We evaluated internal …
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Super High-speed Miniaturized Permanent Magnet Synchronous Motor
This dissertation is concerned with the design of permanent magnet synchronous motors (PMSM) to operate at super-high speed with high efficiency. The designed and fabricated PMSM was successfully tested to run upto 210,000 rpm The designed PMSM has 2000 W shaft output power at 200,000 rpm and at …
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Miniaturized electromagnetic biosensors for circulating cancer biomarker detection
Cancer is one of leading cause of deaths, and responsible for 8.2 million deaths worldwide. Especially, 70% of deaths from cancer occur in low or mid income countries. In order to deliver affordable and accessible cancer care to low income developing countries, it is critical to develop rapid, low …
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Design of a miniaturized Hall thruster for microsatellites
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
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A Miniaturized Chemical Vapor Detector Using MEMS Flexible Platform
… of early detection and diagnostic tools such as miniaturized and sensitive gas sensor. This can detect the released volatiles in addition to be implementable in portable electronics, which decisively improves the patient’s survival rate. Therefore, in this thesis and in an effort to develop …
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Analysis And Design Of Miniaturized Rf Saw Duplexer Package
… methodology for accurate analysis and design of miniaturized radio frequency (RF) surface acoustic wave (SAW) duplexer package. Full-wave analysis based on the three dimensional (3-D) finite element method (FEM) is successfully applied to model the package. The die model is obtained by combining …
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A universal miniaturized electrochemical sensing platform and its applications
We have developed a portable universal miniaturized electrochemical sensing platform, which integrates with a microelectronic sensor strip, that can perform various electrochemical and impedance sensing measurements. This sensing platform works as a miniaturized potentiostat that supports a number …
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Energy efficient accelerators for autonomous navigation in miniaturized robots
Autonomy is becoming an increasingly desirable feature for very small nano/pico robots to navigate cluttered and confined indoors environments such as collapsed buildings, caves, etc. Robot perception (i.e., semantic and geometric understanding) is considered the computation bottleneck in …
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Design of miniaturized radio-frequency DC-DC power converters
Power electronics appear in nearly every piece of modern electronic hardware, forming an essential conduit from electrical source to load. Portable electronics, an area where a premium is placed on size, weight, and cost, are driving the development of power systems with greater density and better …
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Miniaturized, low-voltage power converters with fast dynamic response
This thesis introduces a two-stage architecture that combines the strengths of switched capacitor (SC) techniques (small size, light-load performance) with the high efficiency and regulation capability of switch-mode power converters. The resulting designs have a superior efficient-power density …
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