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The development of a novel micropump structure consisting of thick metallic float valves and a polymer diaphragm /Kang, In-Byeong. Unknown Date (has links)
Thesis (PhD) -- University of South Australia, 1998
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Femtosecond laser microprocessing of aluminum films and quartzDoerr, David W. January 1900 (has links)
Thesis (Ph.D.)--University of Nebraska-Lincoln, 2007. / Title from title screen (site viewed Dec. 4, 2007). PDF text: xii, 80 p. : ill. ; 6 Mb. UMI publication number: AAT 3273191. Includes bibliographical references. Also available in microfilm and microfiche formats.
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Electrostatically actuated and bi-stable MEMS structuresUpadhye. Abhijit. January 2007 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 16, 2008) Includes bibliographical references.
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Metal-transfer-molding (MTM) technique for micromachined RF componentsZhao, Yanzhu. January 2008 (has links)
Thesis (Ph.D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Mark G. Allen; Committee Member: J. Stevenson Kenney; Committee Member: Joy Laskar; Committee Member: Oliver Brand; Committee Member: Peter Hesketh.
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Process modeling of micro-cutting including strain gradient effectsLiu, Kai. January 2005 (has links)
Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2006. / Melkote, Shreyes, Committee Chair ; Zhou, Min, Committee Member ; Liang, Steven, Committee Member ; Thadhani, Naresh, Committee Member ; Haj-Ali, Rami, Committee Member. Vita. Includes bibliographical references.
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Laser micromachining of coronary stents for medical applicationsMuhammad, Noorhafiza Binti January 2012 (has links)
This PhD thesis reports an investigation into medical coronary stent cutting using three different types of lasers and associated physical phenomena. This study is motivated by a gap in the current knowledge in stent cutting identified in an extensive literature review. Although lasers are widely used for stent cutting, in general the laser technology employed is still traditionally based on millisecond pulsed Nd:YAG lasers. Although recent studies have demonstrated the use of fibre lasers, picosecond and femtosecond lasers for stent cutting, it has been preliminary studies.To further understand the role of new types of lasers such as pulsed fibre lasers, picosecond and femtosecond pulsed lasers in stent cutting, these three lasers based stent cutting were investigated in this project. The first investigation was on a new cutting method using water assisted pulsed (millisecond) fibre laser cutting of stainless steel 316L tubes to explore the advantages of the presence of water compared to the dry cutting condition. Significant improvements were observed with the presence of water; narrower kerf width, lower surface roughness, less dross attachment, absence of backwall damage and smaller heat affected zone (HAZ). This technique is now fully commercialised by Swisstec, an industrial project partner that manufactures stent cutting machines.The second investigation used the picosecond laser (with 6 ps pulse duration in the UV wavelength range) for cutting nickel titanium alloy (nitinol) and platinum iridium alloy. The main achievement in this study was obtaining dross-free cut as well as clean backwall, which may eliminate the need for extensive post-processing. Picosecond laser cutting of stents is investigated and reported for the first time. The third area of investigation was on the use of a femtosecond laser at 100 fs pulse duration for cutting nickel titanium alloy tubes. It was found that dry cutting degraded the cut quality due to debris and recast formation. For improvement, a water assisted cutting technique was undertaken, for the first time, by submerging the workpiece in a thin layer of water for comparison with the dry cutting condition. The final part of the thesis presents a three dimensional numerical model of the laser micromachining process using smoothed particle hydrodynamics (SPH). The model was used to provide better understanding of the laser beam and material interaction (with static beam) including the penetration depth achieved, phase changes, melt ejection velocity, also recast and spatter formation. Importantly, the model also simulated the wet machining condition by understanding the role of water removing the melt ejected during the process which avoided backwall damages. Results with the fibre laser in millisecond pulse duration were used for the validation purposes. The conclusions reached in this project and recommendations for future work are enclosed.The work has resulted in the publication of 3 journal papers and 2 additional journal paper submissions.
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Chemo-Thermal Micromachining of Glass: An Explorative StudyAli, Arham January 2018 (has links)
No description available.
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Study of Pulse Electrochemical Micromachining using Cryogenically Treated Tungsten MicrotoolsBalsamy Kamaraj, Abishek January 2012 (has links)
No description available.
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Theoretical Aspects of Selected Electrochemical Processes: Micromachining, Ohmic Microscopy and ElectrocatalysisKumsa, Doe Wondwossen 27 August 2012 (has links)
No description available.
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FOCUSED ION BEAM FABRICATION OF PHOTONIC STRUCTURES FOR OPTICAL COMMUNICATIONSCHENG, JI 27 September 2002 (has links)
No description available.
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