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 13939 for “"devices"”.
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Daydreaming Devices
Daydreaming Devices is a project on aspects of daydream and the design of convertible furniture within the context of art. This thesis addresses the concepts and the design of two daydreaming devices developed during my studies at MIT, the Dreaming Lounge and the Working Unit. Both works create a …
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Carbon Nanotube Devices
Eine Reihe wichtiger Wachstums- und Integrationsaspekte von Kohlenstoff-Nanoröhren wurde im Rahmen dieser Arbeit untersucht. Der Schwerpunkt der experimentellen Arbeit lag dabei hauptsächlich bei einschaligen Kohlenstoffnanoröhren (SWCNT). Das große Potential dieser Nanoröhren für …
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Nanoscale Josephson Devices
… of sub-micron current-perpendicular-toplane devices fabricated by three-dimensional etching with a focused ion beam microscope. This technique was applied to a range of materials, including the study of c-axis Josephson junctions in the high temperature superconductor Tl2Ba2CaCu2O8, the …
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Grey man devices
… Slaved to Walking Device i s one in a series of devices that are a result of the experimental ambulation series. The ability to see only when one's feet are moving allows for a distorted perspective of ones own perceptual world as well as the outside environment . The device is made up of …
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Volume Mount Devices
… have become critical bottlenecks. Surface-mount devices (SMDs) remain entrenched in industry practice despite being insufficient for today's computing challenges and sustainability needs. This thesis introduces the volume mount device (VMD), a three-dimensional electronics packaging standard that …
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Bipolar thermoelectric devices
… production and transport in bipolar electrical devices, with detailed treatment of thermoelectric effects. Both homojunction and heterojunction devices are considered, and particular attention is given to semiconductor laser diodes. The mechanisms that govern both internal heat exchange and heat …
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Nanoarchitectured Energy Storage Devices
Supercapacitors, the devices that connect the gap between batteries and conventional capacitors, have recently attracted significant attention due to their high specific capacitance, substantially enhanced power and energy densities, and extraordinary cycle life. In order to realize even better …
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Optical fibre nanowire devices
… design and demonstration of novel nanowire devices are discussed.<br/><br/>At first, a short adiabatic taper tip is manufactured, and it is used as optical tweezers for trapping 1µm microspheres.<br/><br/>Then, the most important devices - the OFN resonators including the simple Optical …
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Elastic smart meta-devices
L'abstract è presente nell'allegato / the abstract is in the attachment
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Optimization of microwave devices
… techniques for the improvement of the microwave devices performance. In particular, the technique proposed considers the Particle Swarm Optimization algorithm and applies such an algorithm to different devices. Different techniques are developed to connect the optimization with an electromagnetic …
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GeSn Light-Emitting Devices
<p>Silicon based optoelectronic devices have been investigated for decades. However, due to the indirect band gap nature of Si and Ge, developing of efficient light-emitting source on Si is still a challenging topic. GeSn based optoelectronic devices have the great potential to overcome this …
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Hybrid plasma-semiconductor devices
A hybrid plasma-semiconductor phototransistor has been realized by substituting a plasma for the collector of an npn bipolar junction transistor. Designated as the plasma bipolar junction transistor (PBJT), this optoelectronic device relies on the correspondence between the properties of a low …
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Telecom Wavelength Quantum Devices
Semiconductor quantum dots (QDs) are well established as sub-Poissonian sources of entangled photon pairs. To improve the utility of a QD light source, it would be advantageous to extend their emission further into the near infrared, into the low absorption wavelength windows utilised in long-haul …
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Electrocaloric materials and devices
The temperature and/or entropy of electrically polarisable materials can be altered by changing electric field E. Research into this electrocaloric (EC) effect has focussed on increasing the size of the EC effects, with the long-term aim of building a cooler with an EC material at its heart. …
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Theory of Superjunction Devices
… and the understanding of superjunction devices have been gradually progressed. Although Fujihira’s ideal model was developed to estimate the specific on-state resistance at a given cell pitch as a function of the breakdown voltage, the model does not work for sub micro cell pitches …
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Underdamped vortex flow devices
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Thin Film Energy Devices
… require energy harvesters and energy storage devices, i.e. “thin film energy devices”, as key components. The first section of this thesis introduces the working principle of a new type of thermal energy harvester, a “Multi-cell Thermogalvanic System” (MTS), that provides an alternative to …
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Multimaterial multifunctional fiber devices
Optical fibers and semiconductor devices differ significantly in their properties and their processing approaches. The latter require an assembly of metal, insulator and semiconductor materials into complex geometries with small feature sizes (sub 100 nm), while maintaining high quality interfaces. …
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Synchronization and synchronous devices
Object: To construct a synchroscope for use in the Electrical Engineering Laboratory. This synchroscope is to be small and a very compact unit, which will be portable and of such sturdy construction that it will not be damaged by the frequent handling of students. Method: After a thorough research …
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