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 74 for “"Thermoelectric properties"”.
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Thermoelectric Properties of Organic Polymers
Thermoelectric devices present an enticing solution for harnessing waste thermal energy from industrial processes and converting it into electrical power. Due to their cost-effectiveness and potential in flexible electronic applications, organic thermoelectrics have attracted considerable …
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Thermoelectric properties of silicon-germanium alloys
… from thermal to electrical energy, based on thermoelectric effects, is attractive for potential applications in waste heat recovery and environmentally friendly refrigeration. The energy conversion efficiency of thermoelectric devices is related to the thermoelectric figure of merit ZT, which …
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Thermoelectric properties of polysilicon inverse opals
… a remarkable increase in the gure of merit for thermoelectric energy conversion. Here we theoretically and experimentally(partial) investigate a similar enhancement for polycrystalline silicon structured as an inverse opal. An inverse opal provides nanoscale grains and a thin- lm like geometry …
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Thermoelectric properties of carbon nanotube films
Thermoelectric generators are solid state machines used to convert temperature gradients into electrical energy. They are formed by several thermoelectric units connected electrically in series and thermally in parallel. These units are made by creating a junction between a p-type and an n-type …
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Thermoelectric properties of amorphous Sb and Te
Includes bibliographical references.
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Electric and thermoelectric properties of antiferromagnetic metals
… experimentally that magneto-transport and thermoelectric measurements could serve as effective readout mechanisms of AFM order. In addition to the readout methods, we identified materials that provide large readout signals linked to their magnetic order. First, I used anisotropic …
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Thermoelectric properties of mesoscopic systems in GaAs
This thesis describes the thermoelectric properties of mesoscopic structures in modulation doped GaAs/ Al0.33Ga0.67As heterostructures. In particular, we study the thermopower of two-dimensional mesoscopic systems (2DMSs) and antidot lattices defined in them. Quantum oscillations in the thermopower …
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THERMAL AND THERMOELECTRIC PROPERTIES OF TWO-DIMENSIONAL HETEROSTRUCTURES
… devices with new functionalities and improved properties. The study of thermal properties is important for heat management of electronic devices while good thermoelectric properties are desired for energy-conversion devices. Despite numerous studies on the electrical and optical properties of …
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Electronic, optical, mechanical and thermoelectric properties of graphene
… excellent electronic, chemical, mechanical properties along with uniquely high thermal conductivity, electrical conductivity and high optical transparency. With excellent electrical characteristics such as high carrier transport properties, quantum Hall effect at room temperature and unusual …
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INVESTIGATION OF ELECTRIC AND THERMOELECTRIC PROPERTIES OF GRAPHENE NANORIBBON
… wide GNR. In addition, we also investigated the thermoelectric properties of GNR. GNR on Si/SiO2 substrate. Seebeck coefficient S of GNR with width of ~70nm and length of 1µm was measured as a function of the back gate voltage at different ambient temperatures. At high temperatures, the Seebeck …
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Thermoelectric properties in gallium telluride-gallium antimonide vacancy compounds
Thermoelectric materials with high figure of merit, which requires large Seebeck coefficient, large electrical conductivity and low thermal conductivity, are of great importance in solid state cooling and power generation. Solid solution formation is one effective method to achieve low thermal …
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Probing Electronic and Thermoelectric Properties of Single Molecule Junctions
In an effort to further understand electronic and thermoelectric phenomenon at the nanometer scale, we have studied the transport properties of single molecule junctions. To carry out these transport measurements, we use the scanning tunneling microscope-break junction (STM-BJ) technique, which …
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Modeling and characterization of thermoelectric properties of SiGe nanocomposites
… between thermal and electrical energy based on thermoelectric effects is attractive for potential applications in waste heat recovery and environmentally-friendly refrigeration. The energy conversion efficiency is related to the thermoelectric figure of merit ZT, which is proportional to the …
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Thermal and thermoelectric properties of nanostructured materials and interfaces
… composite materials. For example, many thermoelectric devices, solar cells, power electronics, thermal barrier coatings, and hard disk drives contain nanostructured materials where the thermal conductivity of the material is a critical parameter for the device performance. At the …
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The thermoelectric properties of liquid alloys of mercury and tin
Thesis (M.A.)--University of Kansas, Physics, 1929.
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Experimental determination of the thermoelectric properties of porous silicon nanowires
"The thermoelectric properties of nanostructured silicon have attracted significant attention in recent work. The objective is to reduce thermal conductivity through the introduction of phonon scattering mechanisms while preserving charge transport. Initial reports on electrolessly etched silicon …
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Modeling the thermoelectric properties of bulk and nanocomposite thermoelectric materials
Thermoelectric materials are materials which are capable of converting heat directly into electricity. They have long been used in specialized fields where high reliability is needed, such as space power generation. Recently, certain nanostructured materials have been fabricated with high …
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Theoretical investigation of thermoelectric properties of bulk and nano-scaled semiconductors
Even though thermoelectric effects have drawn more attention these days due to environmental and economic reasons, the efficiency of the thermoelectric technology is still limited by currently available thermoelectric materials. The priority aim in thermoelectric industry is to achieve a higher ZT, …
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Experimental studies of the thermoelectric properties of microstructured and nanostructured lead salts
Thermoelectric devices allow for direct conversion between thermal and electrical energy. There applications, however, are severely limited by their inefficiency. A reduction in thermal conductivity of a material potentially enhances its overall thermoelectric performance and can improve the …
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