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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 78 for “"charge storage"”.
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Charge-Storage mechanisms in polymer electrets
In view of the importance of charge storage in polymer electrets for electromechanical transducer applications, the aim of this work is to contribute to the understanding of the charge-retention mechanisms. Furthermore, we will try to explain how the long-term storage of charge carriers in …
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Charge Storage Mechanism of Redox Polymers for Energy Storage
… attracted significant interest for energy storage applications due to their high capacity, resource abundance, and environmental friendliness. While most studies focused on electrochemical performance, their redox mechanisms are not well-studied, especially for n-type polymers. The …
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Carbon Hybrid Materials for Electromagnetic Interference (EMI) Shielding and Charge Storage Applications
… EMI (electromagnetic interference) shielding and charge storage. In EMI shielding, our goal was to alleviate the destructive interference of electronic devices caused by their emitted electromagnetic waves which adversely affect device functions as well as the performance of nearby devices. …
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Synthesis of Multifunctional One-dimensional and Two-dimensional Highly Conductive Nanomaterials for Charge Storage Applications
… and MXene were synthesized and used for charge storage. AgNW with high purity and aspect ratio was incorporated in poly(methyl methacrylate) (PMMA) to fabricate a high performance dielectric material. To improve the dielectric performance of the nanocomposites, a hybrid structure, …
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III-V compound semiconductor integrated charge storage structures for dynamic and non-volatile memory elements.
… an investigation into a novel group of GaAs charge storage devices. These devices, which are an integration of bipolar and junction field effect transistor structures were conceived, designed, fabricated, and tested within this study. The purpose was to analyse new types of charge storage …
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Molecular-Level Understanding of Ionic & Electronic Charge Storage Mechanisms in Rechargeable Aluminum Batteries Using Sold-State NMR
<p>Rechargeable aluminum-ion batteries are safe and low-cost alternatives to traditional lithium-ion batteries due to the high volumetric capacity (8040 mAh/cm<sup>3</sup>) of aluminum. However, very few electrode materials have shown reversible aluminum ion intercalation. Intercalation …
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Organic molecular floating gate memories
… market, with device structures that utilize charge storage in polysilicon floating gates imbedded in insulating silicon oxide films'. As demands for high storage density, high chip memory capacity, and decreasing process costs continue to mount, conventional flash memory has found it …
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Graphene-based Hybrid Electrodes for High-Performance Supercapacitors
… (SC). A supercapacitor is an energy storage device with a much higher capacitance value than other capacitors. The interface between the electrodes and electrolytes is crucial in advancing supercapacitor performance, as this solid electrolyte interface (SEI) is where charge storage …
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Nuclear Magnetic Resonance Studies of Ion Adsorption in Supercapacitor Electrodes
… double-layer capacitors) are high power energy storage devices that store charge by the non-faradaic adsorption of ions at the interface between porous carbon electrodes and an electrolyte solution. The development of new electrode materials and electrolytes with improved performances is an …
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Study of organic molecules and nano-particle/polymer composites for flash memory and switch applications
… studied in this dissertation. Facilitating data storage on individual small molecules as the approach the limits in miniaturization for ultra-high density and low power consumption media may enable orders of magnitude increase in data storage capabilities. A floating gate consisting of a thin …
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Layer-by-layer assembled carbon nanotube nanostructures for high-power and high-energy lithium storage
… to incorporate positively- and negatively-charged electroactive species in self-assembled electrodes that are binder- and additive- free. This work first studies electrochemical performance of LbLassembled functionalized multiwall carbon nanotube (MWNT) electrodes as positive electrodes in …
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Characterization of redox active materials to enable electrochemical separations through faradaic deionization
… as capacitive deionization are limited by low charge storage capacity due to electric double layer charge storage, high energy consumption, and inability to selectively remove specific ions. FDI employs redox active materials with higher charge storage capacity, high selectivity, and offers low …
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Exploring the Electrode-Electrolyte Interface of Electrically Conductive Layered Metal-Organic Frameworks with Nuclear Magnetic Resonance
Supercapacitors are high-power energy storage devices which are imperative to a green-energy transition. However, their energy density is currently limiting. An understanding of supercapacitor performance at the molecular level is essential to enable design of higher energy-density electrodes to …
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Nano-Confined Room-Temperature Ionic Liquids for Electrochemical Applications
… carbon as electrodes, but the mechanism of the charge storage using these materials is not well understood. In this dissertation, the diffusion and charging dynamics of RTILs in nanopores are studied. The results show that ion packing typically plays the most important role in ion diffusion. The …
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Molecular Elucidation of Reaction Mechanisms in Aluminum & Lithium Metal Batteries by Solid-State NMR Spectroscopy and Electrochemical Methods
… types of batteries; for example, stationary storage systems prioritize minimal expense, whereas mobile applications like electric vehicles emphasize high energy densities. Aluminum and lithium metal batteries hold great promise for next-generation energy storage due to their large specific …
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VHF bipolar transistor power amplifiers: measurement, modeling, and design
… aspect of the model is the inclusion of charge storage within the transistor base. This charge storage effect gives rise to a nearly sinusoidal collector current waveform, even in a transistor which ostensibly is biased for class B or nonsaturating class C operation. Methods of predicting …
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Temperature robust programmable subthreshold circuits through a balanced force approach
… region of operation also allows for injection of charge onto floating nodes that allows for persistent storage that can be used in a variety of applications. The combination of charge storage and device modeling has allowed for the development of programmable circuits for digital applications.
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Hysteresis and memory effects in nanocrystal embedded MOS capacitors
… quantum mechanical direct tunneling current for charge storage. This thesis presents the work done to characterize the memory effect in nanocrystal embedded metal-oxide-semiconductor (NC-MOS) capacitors, the fundamental components of the nanocrystal memory. Various properties of the NC-MOS …
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Charge control in acoustic charge transport devices
Acoustic charge transport (ACT) devices utilize the acoustoelectric effect in a piezoelectric semiconductor, particularly GaAs, to create buried channel charge transfer devices capable of signal processing functions, especially transversal filtering. Charge control in ACT devices concerns the …
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