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Showing 1 to 20 of 151 for “"joule"”.
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Natural carbonaceous materials for use in transparent Joule heaters
… applications, specifically transparent Joule heaters. The SCT was made into thin films using both rod-rolling and spray-coating methods. After the superior uniformity of the rod-rolled films was observed, a 2 laser cutter was used to anneal the rod-rolled films with the intention of …
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Quantitative nanometer-scale thermal metrology using scanning joule expansion microscopy
Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Ingram (wingram2@illinois.edu) on 2011-05-25T14:41:49Z Item is restricted until 2013-05-25T14:41:28Z
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A joule heating mechanism for high-speed fused filament fabrication
… factor for prints. This work explores resistive joule heating as a method to increase heat transfer into an electrically conductive composite feedstock. This requires usage of an electrically insulating liquefier in order to co-locate both conduction and joule heating. A prototype mechanism was …
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Kühlung eines resistiven HTSL-Kurzschlussstrombegrenzers mit einer Gemisch-Joule-Thomson-Kältemaschine
Die vorliegende Arbeit beschäftigt sich nach der Analyse und Optimierung der Stromzuführungen auf Flüssigstickstoff-Temperaturniveau, hauptsächlich mit der Untersuchung einer Gemisch-Stickstoff-Kaskade als Kälteversorgungssystem eines resistiven HTSL-Kurzschlussstrombegrenzers. Unter einem …
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Beyond Flash Joule Heating: Advanced Non-equilibrium Synthesis and Electron Microscopy Characterization
Flash Joule heating (FJH) has emerged as a highly efficient method for synthesizing a diverse array of advanced materials. This ultrafast, non-equilibrium technique has demonstrated significant potential in transforming various carbon sources into turbostratic flash graphene, synthesizing …
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Modeling of Joule heating and thermoelectric transport in thin film silicon for SJEM measurement
… data acquisition technique of Scanning Joule expansion microscopy (SJEM). Time varying heat equations and Maxwell’s equations are solved in frequency domain and applied to commercial finite element software, COMSOL. Chapter 1 introduces various techniques to obtain nanoscale temperature …
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Joule heating and pore pressure evolution, magmatic intrusions at continental rifts, and microseisms in Yellowstone Lake
The goal of this thesis is to investigate research topics related to geothermal resources. Chapter 1 introduces the thesis and motivates the need to study research topics in relevant geothermal environments, and develop new technologies to economically extract heat from these resources. In Chapter …
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Entwicklung, Modellierung und Aufbau des 10 Joule-Vorverstärkers mit adaptiver Optik für den Petawatt-Laser PHELIX
… der Modellierung und dem Aufbau des 10 Joule, 30 Terawatt Vorverstärkers von PHELIX. Zum anderen werden neue Techniken der Kompensation von Wellenfrontstörungen untersucht und eine adaptive Optik für den PHELIX entwickelt und in das System integriert. Das Lasersystem besteht aus drei …
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The development of a proff of principle superfluid Joule-Thomson refrigerator for cooling below 1 Kelvin
… type of sub-Kelvin refrigerator, the superfluid Joule-Thomson refrigerator, has been developed and its performance has been experimentally verified. This refrigerator uses a liquid superfluid mixture of He and 4He as the working fluid and depends on the non-ideal-gas-like behavior of the 3He …
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Joule Heating and Pore Pressure Evolution, Magmatic Intrusions at Continental Rifts, and Microseisms in Yellowstone Lake
The goal of this thesis is to investigate research topics related to geothermal resources. Chapter 1 introduces the thesis and motivates the need to study research topics in relevant geothermal environments, and develop new technologies to economically extract heat from these resources. In Chapter …
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Study of the heating and ignition of metal powder by electrostatic discharge
… is delivered to the powder primarily via its Joule heating. Powder heating in ESD occurs adiabatically. Powder ejection from the sample holder is due to a reflected shockwave generated by the spark. Among many ejected particles, only some are heated to ignition. The spatial distribution of …
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Nanometer-scale temperature measurements of phase change memory and carbon nanomaterials
… thermometry technique, known as scanning Joule expansion microscopy (SJEM), to measure nanometer-scale heat generation in new graphene and phase change memory (PCM) devices, which have potential to improve performance and energy consumption of future electronics. Nanometer-scale …
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Optimization of purely semiconducting carbon nanotube complementary field effect transistors
… metallic nanotube removal process with joule heating induced thermocapillary flow in thin organic layers. Detailed experimental studies reveal the selective removal of metallic SWNTs. We provide statistically significant demonstrations to prove the effectiveness and selectivity of this …
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Use of Bioheat Modeling to Characterize and Optimize Implantable Medical Devices and Neuromodulation Technologies
… back pain, produces heat via the principle of joule heating. Similarly, several therapeutic cooling technologies are providing neuroprotective effects in brain injury patients via focal intracranial cooling technologies. Nonetheless, heating or cooling effects of these medical devices require …
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Thermally Developing Electro-Osmotic Convection in Circular Microchannels
… The imposed voltage gradient results in Joule heating in the fluid with an associated volumetric source of energy. For this scenario coupled with a slug flow velocity profile, the analytical solution for the fluid temperature development has been determined for both thermal boundary …
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Predictive control of electrical drives
… both the reference torque value and the minimum Joule losses condition. Then, several predictive control algorithms are proposed for the Synchronous Reluctance Machine, taking into account the magnetic saturation effects too. They are based either on the traditional control strategy or on …
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Flow of Entropy in Equilibrium and Non-Equilibrium Quantum Systems
… and their interpretation is made. An analysis of Joule heating in an exactly solvable model of a quantum wire is performed using the proposed unitary formula. It is shown that when very many local measurements are made of the nonequilibrium electron distribution in the wire, Joule heating, a …
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Approaches for alignment and purification of single walled carbon nanotube thin films and their application in device electronics
… for purifying these arrays based on selective, joule heating induced thermocapillary flow in thin organic layers deposited on the array that is localized to the metallic SWNTs and subsequent etching to yield their removal. We provide statistically significant demonstrations to prove the …
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Taking Steps Towards Superfluid-like Spin Transport in Metallic Ferromagnets
… carry information. This comes with ever-present Joule heating as a result of the resistive scattering of electrons. Recent works in the field of spintronics have focused on using magnetic excitations (e.g., spin waves) instead of electrons as a means of information transport without Joule …
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