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 73 for “"characterization technique"”.
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Developing a disturbance source characterization technique for small satellite applications
… a set of components capable of performing a characterization effort of this nature. Our implementation of supervised learning enables us to predict actuator operational frequency values based on accelerometer readings. The standardized mean squared error (SMSE), a measure of error between the …
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Quantitative high resolution transmission electron microscopy
… (HRTEM) has been extensively used as a structure characterization technique in materials and biological science. In the past, qualitative use of HRTEM has been primarily employed.
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Optical Studies of Iii-V Quantum Wires Grown by Strain-Induced Lateral Ordering (Silo) Process
A characterization technique is developed to estimate the extent and shape of the spontaneously created composition modulation. The technique, based on resonant Raman spectroscopy, is general and can be utilized to map out composition regions in any semiconductor microstructure. Computer …
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Dielectric properties of polymers at microwave frequencies
… of a polymer system is an important physical characterization technique. With the ability to use microwave radiation for curing of polymer systems, the measurement of the dielectric properties at microwave frequencies is vital. The two polymer systems that have been investigated in this work …
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A new inverse-modeling-based technique for sub-100-nm MOSFET characterization
… must be known accurately. A 2D doping profile characterization technique is therefore very important. Not only should it enable device engineering, but it can also be used as a tool for process monitoring and characterization. One dimensional ( l D) profiling techniques such as the C-V method …
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Study of microwave-assisted magnetization dynamics in magnetic films and structures
… spatial regimes by electrical and optical techniques to understand their influence on reversal processes. Time-resolved optical techniques have been developed to study spin wave generation in large area patterned thin films and the interaction of different modes. The study revealed the …
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Investigating physical properties of novel carbon-based materials
… conductivity graphitic foams. The experimental technique of Raman laser spectroscopy yields structural information about all of these materials that we are investigating, including how the covalent bonds between the carbon atoms in the base of the material change in the presence of metal doping …
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Spectroscopic ellipsometry and dielectric modeling of thin film CdTe/CdS photovoltaic devices
… (SE) is a non-contact, non-destructive characterization technique for probing the optical properties of thin films. With the advent of second-generation solar cells, SE has seen use as a method for determining the dielectric function of each layer in heterostructured, thin-film …
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Microindentation for Characterization of Interactions in Liquid Metal Composites
… properties. Microindentation is a material characterization technique that can be used to study the micron-scale droplet-droplet interactions between the inclusions in these composites. Because most microindentation systems are incapable of producing plastic/elastic deformation volumes large …
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Surfactant Assisted Electrospray Ionization Time of Flight Mass Spectrometry of Synthetic Polymers
… complex mixtures which often require extensive characterization to determine chemical composition and structure. Mass spectrometric techniques have greatly enhanced the quantity, as well as the quality, of data that can be used to characterize synthetic polymers. Electrospray Ionization Mass …
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Optical studies of III-V quantum wires grown by strain induced lateral ordering (SILO) process
A host of optical techniques have been utilized to carefully study the quantum wires grown via strain induced lateral ordering (SILO) which is a bulk thermodynamics driven self-ordering process. Fourier transform photoluminescence (FTPL) measurements have been employed to study the polarization …
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A low-cost, portable, web-based impedance spectroscope for agricultural applications
… spectroscopy (EIS) is an electrochemical characterization technique widely exploited in the field of chemistry, material science, and biology. EIS characterizes the dynamics of fixed and mobile charge carriers at the electrode-sample interface. It has proved useful in the characterization …
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Development of an online broadband impedance spectroscopy extraction system of PV modules through switch-mode converters
… linear impedance spectroscopy, a frequency-based characterization technique implemented through a DC-DC switch-mode converter, has been shown to provide fast and reliable impedance information that can be utilized to diagnose the condition of batteries and fuel cells in real-time. However, the …
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Optofluidic Microreactors for Advanced Photocatalysis
… fibres (HC- PCFs) as a novel and advanced characterization technique to monitor photocatalysis. The use of HC-PCFs as the core element of a newly developed characterisation platform has many benefits: HC-PCF’s light-guiding abilities and low-loss properties make absorp- tion spectroscopy …
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Study of waveguide and anisotropy effects upon surface acoustic wave velocities in thin films
… Scattering (ISTS) is an in-situ non-destructive characterization technique based on laser excitation and detection of surface acoustic waves (SAWs) for mechanical properties of thin metal films in the microelectronic industry. In this work, the effect of elastic anisotropy from silicon wafers on …
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Tangled Circuits: Characterizing Errors in Experimental Superconducting Quantum Processors
… bits (qubits), researchers require robust techniques for designing, operating, and characterizing coupled multi-qubit systems in the laboratory, and for understanding the errors which arise in such systems. This doctoral thesis is structured around three interconnected bodies of technical …
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Isolation of polyacetylene: Exploring the properties of isolated, oriented, and insulated polyacetylene utilizing inclusion crystal chemistry
… DIBD UICs with three different formation techniques: slow evaporation, slow cooling, and vapor transfer. All crystals formed had the same unit cell, which suggests that the same crystal structure was formed by all methods. These crystals were irradiated with 254 or 532 nm light, and the …
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An investigation of phase-mask diffraction patterns and fibre Bragg gratings with scanning near-field optical microscopy
… the evanescent fields of Bragg gratings, a characterization technique has been developed which has enabled the acquisition of sub-wavelength information about the optical field distribution within a fibre grating and its refractive index structure. Six separate fibre grating samples have …
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Variation of electrical resistance in superelastic NiTi for sensor applications
… In fact, resistive sensing is a common characterization technique for shape memory alloys. The unique material properties of superelastic NiTi could also be the basis for creating a resistive sensor that is sensitive enough to measure small displacements, and robust enough to measures …
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