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 1641 for “"nanoscale"”.
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Nanoscale Josephson Devices
This thesis describes the development and applications 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 …
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MnO2 Nanoscale Interface Modification
… This work will develop and characterize a nanoscale ZnO and MnO2 interface modification for use on carbon fibers. These nanomodifications will be developed with low-temperature processes, minimizing the fiber degradation that the fibers undergo. Fourier transform infrared spectrography and …
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Nanoscale Thermal Fluctuation Spectroscopy
The utilization of thermal fluctuations or Johnson/Nyquist noise as a spectroscopic method to determine transport properties in conductors or semiconductors is developed in this paper. The autocorrelation function is obtained from power spectral density measurements thus enabling electronic …
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Transport in nanoscale systems
In part I of the Thesis charge ordering and transport in arrays of coated semiconductor nanocrystals (quantum dot arrays) are studied. Charge ordering in dot arrays is considered by mapping the electrons on the dots onto the frustrated spin model on the triangular lattice. A number of phases is …
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Liquid flow past nanoscale objects
We present nonequilibrium molecular dynamics (MD) simulations of liquid flow past a carbon nanotube (CNT) and a single graphene sheet. We apply a gravity driven liquid argon flow past a CNT in a small domain and show that the drag coefficients can be modeled as Stokes flow past an array of CNT's …
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The Nanogate : nanoscale flow control
The handling of extremely small samples of gases and liquids has long been a subject of research among biologists, chemists and engineers. A few scientific instruments, notably the atomic force microscope and the surface forces apparatus, have been used extensively to investigate very short range …
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Nanoscale membranes for electromechanical systems
… in this work is a suspended membrane of nanoscale thickness (or "nanomembrane") that is first separately fabricated, and then additively donated via contact-transfer printing to complete a nanostructured variable-capacitance device.
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Data processing in nanoscale profilometry
New developments on the nanoscale are taking place rapidly in many fields. Instrumentation used to measure and understand the geometry and property of the small scale structure is therefore essential. One of the most promising devices to head the measurement science into the nanoscale is the …
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Simulations of nanoscale spatial disorder
… oxidation of a metal surface with nanoscale roughness. We demonstrated that by preserving the amount of metal and making the oxide coating conformal, anodization can highly planarize the metal surface. We verify the convergence of our results as we increase the accuracy of our …
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Single-Fiber Mechanics on the Nanoscale
Diese Arbeit befasst sich mit der nanomechanischen Charakterisierung von 1,3,5-Benzoltrisamidfasern (BTA Fasern). Zu diesem Zweck werden Biegeexperimente basierend auf der Rasterkraftmikroskopie (AFM) angewendet und weiterentwickelt. Ziel ist es, die linear elastischen Eigenschaften der Fasern zu …
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Spin Polarized Transport in Nanoscale Devices
… of subtle spin-based issues operative in nanoscale device structures, and will ultimately lead to realization of novel nano-spintronic devices.
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Nanoscale Carbon Architectures for Electrode Applications
Two primary objectives were the basis of this research. The first objective was to synthesize a variety of carbonaceous nanomaterials using plasma torch and furnace-based expansion-reduction techniques. The second objective was to correlate the unique characteristics of these materials to their …
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Nanoscale thermal systems in subcritical region
The behavior of a nanoscale fluid system in the subcritical region is investigated using molecular simulation. The fluid used is argon and the intermolecular forces are represented by the Lennard-Jones potential. The simulations show that the phase change in a nanoscale system becomes continuous as …
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APPROACHING DNA METHYLATION AT THE NANOSCALE
… and context-dependent manner, thus necessitating nanoscale tools to dissect epigenetic dynamics at a finer spatiotemporal resolution. In my Ph.D. work, a group of advanced single-molecule fluorescence tools, in addition to methodologies in bioengineering, nanotechnology, molecular biology, and …
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Nanoscale electrical characterisation of nitride structures
To fully exploit the potential of gallium nitride (GaN) devices for optoelectronics and power electronic applications, the structures of device need to be investigated and optimized. In particular carrier densities, conductivities and localised charges can have a significant impact to device …
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Photodetection and Spectrometry at the Nanoscale
… alone presents an opportunity for their use as nanoscale components within miniaturised or flexible systems. In this thesis, optoelectronic device platforms based around two such nanomaterial systems – compositionally-engineered nanowires and layered black phosphorus – are developed and studied. …
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Phonon thermal transport at the nanoscale
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2015-07-22 without embargo terms
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Nanoscale transport simulation of ion channels
… device engineers seeking to understand how such nanoscale systems realize device-like functions. This work is a study of such biological ion channels in terms of ion permeation and selectivity. The approach taken is based on transport Monte Carlo method. We have used BioMOCA, a three-dimensional …
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Nanoscale infrared absorption imaging and tomography
… While several techniques now provide nanoscale chemical maps by combining molecular vibrational spectroscopies with Atomic Force Microscopy (AFM), data are often complicated by the measurement apparatus, light matter interaction scheme and the low signal to noise ratio. Together, these …
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Cellular decision making at the nanoscale
… contacts. Here, use of novel, force-limited nanoscale tension gauges revealed that both force and substrate deformations govern cell decision-making during initial attachment to compliant substrates. We propose a mechanical model consistent with observed behavior. Upon formation of stable …
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