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.
Results
Showing 1 to 20 of 30 for “"Electrical transport properties"”.
-
Electrical transport properties of barium titanate-based capacitor ceramics
Electrical conduction mechanisms in BaTiO₃-based ferroelectric capacitor ceramics with an emphasis on the X7R type were studied. Dominant charge carriers in this material were identified as conduction band electrons below a temperature of 850°C. This was substantiated by the following results: …
-
Computing and the electrical transport properties of coupled quantum networks
… In this regime, the wave nature of electron transport under the influence of transverse magnetic fields leads to interesting applications for digital logic and computing circuits. The work specifically looks at characterizing a few main areas that would be of interest to experimentalists who …
-
Thermoelectric and electrical transport properties of Bi2Te3 compacted nanoparticles bulk material
… with extremely high mobility. However, their transport properties are typically dominated by bulk carriers that outnumber the surface carriers by orders of magnitude. We herein present a strategy to overcome the problem of bulk carrier domination by using 3D TI nanoparticles, which were …
-
Influence of ag-doped on magnetic and electrical transport properties in Pr0.75Na0.25MnO3 manganites
… attention among researcher due to their electrical and magnetic properties at lower temperature. However, most of the doping does not totally induce the ferromagnetic-metallic (FMM) state probably due to dopant level. As such, the influence of ion doped on host composition need to be …
-
Correlation of Structure and Electrical Transport Properties of Carbon Nanotubes and Bundles in Field -Effect Transistors
… applications thanks to their excellent electrical and thermal transport properties and the quasi one-dimensional nanostructure. However, there are many structural forms of CNTs and each has its own properties. Correlation of structure and electrical transport properties is still …
-
Selective transport properties in nanostructured materials
… in engineering materials due to exciting new properties that manifest only in the nano-regime. When investigating nanomaterials, atom-scale simulations can be powerful tools. Through computational approach, one can 1) understand the underlying physics of a materials property, 2) propose new …
-
Electrical characterisation of simple a-Si:H and nc-Si devices on paper substrates deposited by hot wire chemical vapour deposition and printing techniques
In this work we report on the electrical transport properties of two classes of silicon: hydrogenated amorphous silicon (a-Si:H) obtained by hot wire chemical vapour deposition (HWCVD), and printed nanocrystalline silicon (nc-Si), both deposited on a flexible, lightweight substrate of 80 g m-2 …
-
Low Temperature Electrical Transport in 2D Layers of Graphene, Graphitic Carbon Nitride, Graphene Oxide and Boron-Nitrogen-Carbon
… work, we have investigated temperature dependent electrical transport properties of carbon based two-dimensional (2D) nanomaterials. Various techniques were employed to synthesize the samples. For instance, high quality large area graphene and boron, nitrogen doped graphene (BNC) were grown using …
-
Structural and electrical characteristics of printed metal nanoparticle networks
The structural and electrical properties of metal nanoparticle (NP) networks and their dependence on the constituent phases have been investigated. Percolation and effective media theories have been used to describe the physical properties of disordered systems, as well as providing a link between …
-
Growth, Characterization and Measurement of Epitaxial Sr2RuO4 Thin Films
… films using pulsed laser deposition and their electrical transport properties are systematically discussed. The deposition and optimization process involved several progressive steps. Specifically, the first focus was on the Sr2RuO4 phase optimization in films grown on lattice-matched …
-
Large-area CVD growth of two-dimensional transition metal dichalcogenides and monolayer MoS₂ and WS₂ metal-oxide-semiconductor field-effect transistors
… MoS₂ and WS₂ by CVD and explore their intrinsic electrical transport properties for electronic and optoelectronic device applications. The as-grown monolayer MoS₂ and WS₂ exhibit n-type semiconducting behavior with excellent optical properties. Various techniques are employed to characterize the …
-
Advancements in Hexagonal Boron Nitride for Thermal Neutron Detection Applications
… nitride (h-BN) possesses many unique physical properties which combined have made h-BN an incredibly attractive material for a vast array of technologically significant applications. Some of these properties include extremely wide bandgap, strong optical absorption of above bandgap photons, a …
-
Strombegrenzende Mechanismen YBa2Cu3O7-[delta]-Dünnschichten und -Quasimultilagen
In this work, electrical transport properties and the maximum current carrying capability of YBa2Cu3O7-[delta] thin films and so called quasi-multilayers are investigated. These samples are prepared with pulsed laser deposition on single-crystalline substrates (SrTiO3) as well as on biaxially …
-
Nanoscale electron, phonon and spin transport in thermoelectric materials
… the past decade to decouple the charge and heat transport and thus improve the material performance. Most of the progress has been based on a more detailed understanding of the transport and interaction of fundamental energy carriers, such as electrons and phonons in most semiconductors, and …
-
Transport properties of NC-Si / A-SiO2 superlattices and their applications in non-volatile memory
… for temperatures from 4.2 K to 300 K. Electrical transport properties of the nanocrystalline-Si/amorphous-SiO_2 superlattices were discussed. The observed domination of the electron component at negative bias and of the hole component at positive bias above 0.7 V in a dc current allows …
-
Novel Quantum Materials for Spintronic and Opto-Electronic Applications
… of spintronics and opto-electronics, as their properties can greatly influence device performance. For instance, in spintronics, materials such as ferromagnetic half-metals, Giant Magnetoresistants (GMR), and magnetic semiconductors have been extensively studied due to their ability to …
-
Quantum Theory of Electron Transport Through Photo-Synthetic Porphyrins
Optoelectronic properties of metallo-porphyrins play a central role in photosynthesis and are therefore crucial to life on earth. This thesis presents a series of studies into the electronic and thermoelectric properties of various families of molecular junction of metalloporphryins Two main …
-
CARBON NANOTUBE THIN FILM AS AN ELECTRONIC MATERIAL
… devices. An individual CNT possesses excellent electrical properties, but it has been extremely challenging to integrate them on a large-scale. Alternatively, CNT thin films have shown great potential as electronic materials in low cost, large area transparent and flexible electronics. The …
-
Phase dynamics and magnetic field response of proximity-coupled superconductor arrays
"We have fabricated and measured electrical transport properties of arrays of proximity-coupled superconductor islands as a function of temperature, magnetic field, and bias current for several geometries. The weakly-coupled arrays, a physical realization of the frustrated XYmodel, show interesting …
-
Low-dimensional electron systems fabricated with an atomic force microscope
… there has been intensive research into electron transport in low dimensional systems, especially those fabricated in semiconductor material. This research has added to our understanding of electrical transport properties outside of the macroscopic regime, and allowed exploration of potential …
Page 1 of 2