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 2696 for “"arrays"”.
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Broadband Helical Dipole Arrays
Made available in DSpace on 2014-12-08T22:23:53Z (GMT). No. of bitstreams: 1 6604305.pdf: 4848445 bytes, checksum: c3ad9d46a6ac38b12e2e8584b9595b2b (MD5) Previous issue date: 1965
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Multiple-frequency antenna arrays
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1964
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Intelligent field emission arrays
Field emission arrays (FEAs) have been studied extensively as potential electron sources for a number of vacuum microelectronic device applications. For most applications, temporal current stability and spatial current uniformity are major concerns. Using the kinetic model of electron emission, …
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Head Mounted Microphone Arrays
Microphone arrays are becoming increasingly integrated into every facet of life. From sonar to gunshot detection systems to hearing aids, the performance of each system is enhanced when multi-sensor processing is implemented in lieu of single sensor processing. Head mounted microphone arrays have a …
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Synthetic studies towards multichromophore arrays
… for linking macrocyclic chromophores to form arrays. Firstly the aim was to link a porphyrin to a triphenylene through phenyl alkynes. Interestingly, this study discovered a mesogenic dibromtetramethoxy triphenylene – the least heavily substituted triphenylene liquid crystal reported to date. …
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Acoustic beamforming using microphone arrays
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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Global optimization of dither arrays
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Nanophotonic visible light phased arrays
Previously demonstrated integrated optical phased arrays have primarily been implemented in silicon-based platforms and have therefore been limited to operation at infrared wavelengths, where silicon provides low-loss transmission. Developing integrated optical phased arrays for visible wavelengths …
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In-fiber semiconductor filament arrays
… characteristic thickness breaks up into filament arrays during optical-fiber thermal drawing. This structural evolution occurs exclusively in the cross-sectional plane, while the uniformity along the axial direction remains intact. We demonstrate crystalline semiconductor nanowires by post-drawing …
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Stimuli-responsive polymer nanotube arrays
Nanotube arrays, composed of materials such as carbon, titania, and zinc oxide, have shown potential as conductors, energy conversion devices, actuators, and adhesives. Such nanoscale constructs are particularly novel for their high area-to-volume and length-to-diameter aspect ratios that lead to …
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Spectral estimation for sensor arrays
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1981.
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Double-gated field emission arrays
There is a need for massively parallel, individually addressed and focused electron sources for applications such as flat panel displays, mass storage and multi-beam electron beam lithography. This project fabricates and characterizes double-gated field emission devices with high aspect ratio. One …
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Mikrosensor-Arrays für die experimentelle Strömungsmechanik
… in die Zylinderwand integrierbare, Sensor-Arrays entwickelt. Die entwickelten Sensoren der ersten Generation haben eine Fläche von 2,5 × 4,5 mm² und beinhalten eine integrierte pn-Diode zur Temperaturmessung. Basierend auf den Sensoren der ersten Generation wurde ein aus 48 Drucksensoren …
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Suffix arrays in theory and practice
… mathematical and algorithmical aspects of suffix arrays. The first part mainly deals with combinatorial properties of suffix arrays and their enumeration. For a fixed alphabet size and string length, we divide the set of all strings into equivalence classes of strings that share the same suffix …
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Interaction Effects in Nickel Nanowires Arrays
Systems of magnetic nanowires are considered strong candidates in many technological applications as microwave filters, sensors or devices for data storage. Because of their strong potential as candidates in such applications they became lately the object of many studies. However, due to the very …
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Entwicklung eines optischen markierungsfreien Ionenkanalsensor-Arrays
… (PMMA)-Schicht dient als Grundgerüst des Arrays. Über die Mikroporen, die nur wenige Mikrometer Durchmesser aufweisen, wird eine Lipidmembran gespannt, in die Ionenkanäle eingebaut werden. Wird der Ionenkanal aktiviert, strömen Ionen in die Mikroporen und führen zu einer messbaren …
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Digital readout architectures for sensor arrays
L'abstract è presente nell'allegato / the abstract is in the attachment
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Molecular machines constructed from multichromophore arrays
… suitable for elaboration into machine-like arrays is then described. The synthesis of an array in which four porphyrin units surround a central porphyrin core is described, alongside modifications to the strategy that permits differential metal substitution. Strategies for face-to-face …
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