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 84 for “"surface potential"”.
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A surface-potential-based compact model for partially-depleted silicon-on-insulator MOSFETs
… (PD) SOI devices. STAG2 was a robust, surface-potential based compact model, employing closed-form equations to minimise simulation times for large circuits. It was able to simulate circuits in DC, small signal, and transient modes, and particular care was taken to ensure that …
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High-Density Electrode Arrays for Cutaneous Electrophysiology and Body Surface Potential Mapping Design, fabrication and biomedical applications
… arrays for cutaneous electrophysiology and body surface potential mapping, aiming to improve the precision, wearability and interpretability of next-generation non-invasive monitoring systems. Bridging bioelectronics, materials science and machine learning, the work delivers a platform for …
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Investigating interfacial liquid molecular structures using electrochemical 3-dimensional atomic force microscopy
… of this structure upon the application of surface potential and supplemented our understanding with collaborative molecular dynamics (MD) simulations. We then observed how the interfacial structure looks like when we change the electrode surface from graphite (a material with uniform …
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Surface-interface states and the Hall effect measurement of epitaxial and semi-insulating liquid-encapsulated Czochralski gallium arsenide
"The effect of surface-potential changes on the Hall-effect measurement of n-type and p-type epitaxial GaAs and undoped and Cr-doped semi-insulating (SI) LEC GaAs has been studied. The surface-potential changes were induced by wet chemical treatments in ammonium hydroxide and hydrogen peroxide to …
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Effect of Space Charges on Micro- to Nanoscale Electrostatic Actuation
… The characteristic voltage is determined by the surface potential of the space charge layer and the work function difference between the electrodes. Since the surface potential is a quantity that can be measured experimentally, the proposed model can be used to determine the electrostatic force …
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Carbon nanotube electronic structures as anti-corrosion coatings
… in the study of ionic flow through the resulting potential barriers. The structures were made of functionalized carbon nanotubes. Carbon nanotubes are known for many remarkable properties among which is being chemically inert. Taking advantage of this property, a study of corrosion of steel was …
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Local Charging Behavior on GaN Surfaces
… high-frequency devices. The nature of the GaN surface and its electrical characteristics can impact the performance of such devices. In this study, several GaN surfaces are locally charged using an atomic force microscope, and then subsequently studied by measuring the surface potential with …
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Design of band-engineered photocatalysts using TiO2
… TiO2 grown by atomic layer deposition. The near-surface electric field was controlled by tuning the space charge layer width through varying the bulk carrier concentration and the surface potential. The carrier concentration in the polycrystalline semiconductor was controlled over a range of 2.5 …
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The anodic dissolution of covellite in acidic, chloride solutions
… the dissolution behaviour of the mineral over a surface potential range from the open circuit potential (OCP) to about 0.62 V (vs. SHE). The electrode was mounted in an apparatus, which was designed to resemble leaching of the mineral under conditions applicable to heap leaching of whole ores, …
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Low Frequency Noise in Semiconductors and Metals (Statistics, Gaussian (Noise)
… spectral features, as well as the effect of a surface potential of the noise kinetics in GaAs. A study of the statistical properties of l/f noise is presented, concentrating on small (('(TURN))1(mu)m('2) surface area) semiconductor samples that produce three distinct types of non-Gaussian …
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1/f noise in semiconductors and metals
… spectral features, as well as the effect of a surface potential on the noise kinetics in GaAs. A study of the statistical properties of l/f noise is presented, concentrating on sma11 (-1 J,lm2 surface area) semiconductor samples that produce three distinct types of non-Gaussian noise. Models …
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Physical Chemistry of Gemini Surfactant Monolayers
… of monolayer characterization methods, including surface pressure-area isotherms, Brewster angle microscopy (BAM) and atomic force microscopy (AFM) were used to explore the effect of ion-binding and mixing on the thermodynamics of mixing and the morphology of the monolayer films. Figure 1: …
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Ion oxide silicon capacitor based pH sensing
… of the ionic layer, thereby changing the surface potential of the device. The sensitivity of the device based on the results obtained is ~ 100pF/80 L/pH which is sufficient for the target applications, and the changes can be recorded using an LCR meter. In addition, the device can be used …
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Hydrodynamic evaluation of high-speed semi-SWATH vessels
… codes that simulate steady and unsteady free surface potential flows around ships. The most promising of these computer-based simulations employ a variation of the Rankine Panel Method, or R.P.M. R.P.M.'s offer greater prediction accuracy than industry standard two-dimensional strip and …
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Application of scanning micro-tip and UHV Kelvin probes in surface and material characterisation.
… utilising the scanning Kelvin probe (SKP) for surface potential mapping and monitoring changes in work function due to environmental influences in ambient and UHV conditions. The SKP is a truly non-contact technique which determines local work function changes and surface states on conductors, …
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Integrated silicon field-effect sensors and microfluidics for biomolecular detection
… precisely measured, indicating changes in sensor surface potential of less than 30[micro]V. The integrated microfluidic channels enable the delivery of small (nanoliter-scale) amounts of fluid directly to the sensors. Capacitance-voltage curves were recorded using phosphate buffered saline (PBS) …
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Influence of cation size and surface coverage upon the infrared spectrum of carbon monoxide
… in the environment local to the electrode surface. Potential Difference Infrared Spectroscopy was used to investigate the structural behavior of CO adsorbed on a platinum electrode. Carbon monoxide was found to be exclusively linear-bonded on platinum electrode in the presence of tetra-n …
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Predictive Modelling of the Growth of Nanoscale Silver Particles: Verification of an Aggregative Growth Mechanism
… to grow by aggregation and coalescence. The surface charge is extremely sensitive to solution conditions, and was measured by two independent techniques which showed the same qualitative trends. The surface charge decreases with solution temperature and increases with borohydride …
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