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 26 for “"Nanotechnology Fabrication"”.
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Silicon-Based Molecular Nanotechnology: Fabrication and Characterization With the Scanning Tunneling Microscope
The importance of molecular nanotechnology has recently been underscored by increased media, public, and government awareness of the subject. This thesis examines several nanotechnology issues on the technologically significant Si(100) surface with the ultra-high vacuum scanning tunneling …
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Geometry Dependent Plasmonic Activities of a Self-assembled Hexagonal Lattice and a Periodic Hexagonal Lattice with Gold Nanopillars
… play a crucial role in the emerging field of nanotechnology because they overcome the diffraction limitation. Plasmonic activities in metal nanostructures have the ability to scatter and absorb light at nanometer dimensions. There are several types of nanofabrication techniques that can make …
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Modular Approach to Spintronics
<p>There has been enormous progress in the last two decades, effectively combining spintronics and magnetics into a powerful force that is shaping the field of memory devices. New materials and phenomena continue to be discovered at an impressive rate, providing an ever-increasing set of building …
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Towards a universal ultra-thin fluorinated diamond-like carbon coating for nanoimprint lithography imprinters
<p>Nanoimprint lithography (NIL) has proven to achieve arbitrary, nanoscale features, over large areas, without the use of costly step-and-repeat UV lithography tools. The fidelity of the imprinted pattern depends on the elimination of the adhesion between the imprinted polymer and the imprinter …
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Plasma-Assisted Molecular Beam Epitaxial Growth of Indium Nitride for Future Device Fabrication
<p>The need for energy conservation has heightened the search for new materials that can reduce energy consumption or produce energy by the means of photovoltaic cells. III-nitride alloys show promise for these applications due to their generally good transport properties and ability to withstand …
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Super-conformal coating and filling of high aspect ratio recessed structures by two-molecule CVD
… second material is a challenge in many areas of nanotechnology fabrication, including MEMS devices, metallization and shallow trench isolation (STI) in integrated circuits. For structures with straight sidewalls, uniform coating methods – including chemical vapor deposition (CVD) or atomic layer …
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Metasurfaces and Their Applications in Photonic Devices
<p>Metasurfaces are flat artificial optical elements composed of dielectric and/or metallic nanostructures. They can manipulate light in unprecedented ways by altering amplitude, phase, and polarization at subwavelength scales. The ability of these two-dimensional elements to perform multiple …
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Silver (Ag) nanoparticle based masks for the development of antireflection subwavelength structures in GaAs and Si solar cells
… and the effect of annealing temperature on the fabrication of silver nanoparticles of controlled size and spacing distributions. We also use these measured distributions to predict the performance of subwavelength grating structures developed using dry and isotropic etching of semiconductor …
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Fabrication and Characterization of a Disk Ring Shaped Dual Nanometer-Sized Electrode and Its Application to Generation-Collection.
<p>This research reports on the fabrication and characterization of integrated dual nanometer-sized electrodes. The electrodes are made of closely spaced nanometer-sized platinum and gold achieved by inserting and pulling platinum wire in cylindrical glass pipette plated with gold. Cyclic …
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Design of Submicron Structured Guided-Mode-Resonance Near-Infrared Polarizer
… fabricated using the conventional thin-film microfabrication technology to reduce cost. For this purpose, a gold (Au) wire-grid transmission-type transverse-magnetic (TM) polarizer and a silicon (Si) wire-grid reflection-type TM polarizer, were designed using the guided-mode-resonance filter. The …
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Simultaneous Behavior Onset Detection and Task Classification for Patients with Parkinson Disease Using Subthalamic Nucleus Local Field Potentials
<p>This thesis aims to develop of methods for behavior onset detection of patients with Parkinson's disease (PD), as well as to investigate the models for classification of different behavioral tasks performed by PD patient. The detection is based on recorded Local Field Potentials (LFP) of the …
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MEMS Biosensor for Water-Immersed Application
… after exposure to toxicants. Experiment setup, fabrication process, and sensor sensitivity testing are also addressed.</p> <p>Second, I use surface horizontal modes (SH modes) on ST-cut quartz. Both Rayleigh modes and surface horizontal modes are designed and tested. Surface acoustic wave (SAW) …
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Toolpath Planning Methodology for Multi-Gantry Fused Filament Fabrication 3D Printing
… and prototype products. Fused filament fabrication (FFF) is one of the most popular processes in AM as it is inexpensive, requires low maintenance, and has high material utilization. However, the biggest drawback that prevents FFF printing from being widely implemented in large-scale …
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Swelling-Etching Characterization of Copper (I) Oxide - PDMS for the Development of Micro/Nano - Particles Composite MEMS Corrosion Sensor
<p>The primary objective for this thesis is to contribute to the understanding of the oxide removal process for a corrosion sensing device. The goal for designing such a device is for monitoring corrosion on metallic structures. The sensing material (6.35mm x 1mm discs) of the device is composed of …
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Single-Walled Carbon Nanotube Arrays for High Frequency Applications
… devices, followed by a test structure fabrication and measurements.</p> <p>The analysis starts by developing an individual nanotube model, which is then generalized for many nanotubes and adding the parasitic elements. The parasitic elements appear when forming the device electrodes …
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New Effects of Aging and Lattice Intercalation on Surface Properties of Titanate Nanobelts
… by four folds, which is significant in scale-up fabrication of the NB-entangled membranes, which have shown interest as a proton exchange membrane (PEM) in fuel cells (PEMFC) and gas sensing capabilities. PEMFCs provide the highest power density in comparison with all other fuel cell types …
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Investigation of CNT-induced Escherichia coli Lysis and Protein Release
<p>This research investigated the use of carbon nanotubes (CNTs) as a treatment to increase the permeability of a bacterial cell wall. Recombinant Escherichia coli BL21 (DE3) containing a plasmid that expressed Green Fluorescent Protein (GFP) and -lactamase were exposed to CNTs under various …
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Optical Resonators and Fiber Tapers as Transducers for Detection of Nanoparticles and Bio-Molecules
<p>In recent years, detection of biological interactions on single molecule level has aspired many researchers to investigate several optical, chemical, electrical and mechanical sensing tools. Among these tools, toroidal optical resonators lead the way in detection of the smallest …
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Thermally Actuated Resonant Silicon Crystal Nanobalances
… it is well known that non-uniformities in fabrication of MEMS resonators lead to variations in their frequency. I have proposed both active (non-permanent) and permanent frequency modification to compensate for variations in frequency of the MEMS resonators.</p>
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Hybrid Silicon Mode-Locked Laser with Improved RF Power by Impedance Matching
<p>The mode-locked laser diode (MLLD) finds a lot of use in applications such as ultra high-speed data processing and sampling, large-capacity optical fiber communications based on optical time-division multiplexing (OTDM) systems. Integrating mode-locked lasers on silicon makes way for highly …
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