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 18 of 18 for “"charge redistribution"”.
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Integrated capacitive sensors using charge-redistribution sense techniques
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.
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Excited state charge redistribution and dynamics of flavins, flavorproteins, and their cofactors
… studied by Stark spectroscopy. The extent of charge redistribution upon excitation to the lowest excited states of the oxidized and semiquinone forms of flavin adenine dinucleotide (FAD) bound to the light activated DNA repair enzyme DNA photolyase have been studied previously by this …
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ANALYSIS, OPTIMIZATION, AND PRACTICAL DESIGN OF A SPLIT-PHASE DICKSON SWITCHED CAPACITOR CONVERTER FOR HIGH CURRENT APPLICATIONS
… have a fundamental downside in which capacitor charge redistribution causes significant current spikes. This can be solved using as split-phase control, which addresses charge redistribution in the Dickson SCC by controlling the charging and discharging of the flying capacitors, such that the …
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Electric field effects on chemi-ionization in droplet burning
… and strong field are studied to understand the charge redistribution in both cases. Based on the numerical results, an increase in the mass burning rate is observed with increasing potential. However, maximum flame temperature doesn't seem to be effected with the external field. Ohmic Heating …
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High-performance power converters leveraging capacitor-based energy transfer
… from poor efficiency due to the inevitable charge redistribution process. With a strategic placement of one or more inductors, the charge redistribution loss can be eliminated by inductively charging/discharging the capacitors, a process called soft-charging operation. As a result, the …
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Numerical modeling of interface dynamics and transport phenomena in transport-limited electrolysis processes
… for transport-limited electrolysis with rapid charge redistribution. This new Cahn-Hillard phase field formulation includes a model electrostatic free energy term, which captures the behavior of the diffuse interface under the applied electric field, in addition to transport by free energy …
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Low-dimensional carbon allotropes: an electron microscopy investigation
… to measure, for the first time, the valence-charge redistribution induced by the lattice curvature in an individual SWCNT. A novel methodology for the 3D reconstruction of the waviness of a 2D crystal membrane has been developed. Unlike other available TEM reconstruction techniques, like …
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Theoretical study of carbon nanotubes adsorbed on the silicon (100) surface and explorations on the modulation of conductance for metallic carbon nanotubes
… the tube's proximity, the concomitant electronic charge transfer from the nanotubes, and the band hybridization with silicon and carbon states resulting in the appearance of states within the energy gap of the formerly isolated nanotube. It is determined that semiconducting nanotubes exhibit …
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Atomic and electronic structure of bulk intermetallic and heteroepitaxially grown surface alloys
… from the bulk counterpart. Reconstruction, charge redistribution, and surface alloying are phenomena that minimize the surface free energy. Surface properties of scientifically and technologically important bimetallic systems are the main focus of this dissertation. Specifically, surfaces of …
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Systematic Study of Parameters Affecting Unconventional Magnetism in Gold Nanostructures
… of the thiol is believed to affect the ease of charge redistribution from gold to the SAM. The second variable is studied because the domain size of the SAM has been suggested to influence the magnetism of coated gold surfaces, and because nanostructuring of gold could be a source of magnetism …
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Synthesis, Coordination Chemistry and Reactivity of 1H-pyridin-(2E)-ylidenes and Application of Their Transition Metal Complexes
… salts and metal complexes indicates that charge redistribution occurs within the PYE heterocyclic ring to give a contribution from a pyridinium-amido-type resonance structure. Strong donor character of PYE ligands was supported by IR spectroscopy and supplemented by DFT calculations. …
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MicroCantilever (MC) based nanomechanical sensor for detection of molecular interactions
… complexes on cantilever surfaces leads to charge redistribution, configurational change and steric hindrance between neighboring molecules resulting in surface stress change and measureable cantilever deformation. A novel interferometry technique employing two adjacent micromachined …
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Topology optimization and physical realization of magnetically active soft materials: from reprogrammable metamaterials to biomedical robots
… magnetic soft materials with electrets (immobile charges) inducing coupled electric field. These magnetoelectric materials generate electric output through magnetically induced deformation and deformation-induced charge redistribution. We successfully optimize these structures for both charge …
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Studies of and methods for electronic properties of large chemical systems
… Third, it provides a reasonable description of charge redistribution in strongly correlated but non-periodic systems. We then describe a new electronic embedding method based on DMET, dubbed "Bootstrap Embedding," a self-consistent wavefunction-in-wavefunction embedding theory that uses …
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Power processing and active protection for photovoltaic energy extraction
… a new cell-level strategy, termed diffusion charge redistribution (DCR), is proposed to fully recover mismatch loss. The proposed technique processes power by leveraging the intrinsic solar cell capacitance rather than relying on externally added intermediate energy storage in order to …
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Interfacial Energy Transfer in Small Hydrocarbon Collisions with Organic Surfaces and the Decomposition of Chemical Warfare Agent Simulants within Metal-Organic Frameworks
… of MOF-808 zirconium 3d electrons reveal a charge redistribution following exposure to DMMP. Besides, the analysis of the phosphorus 2p electrons following exposure and thermal annealing to 600 K indicates that two types of stable phosphorus-containing species exist within the MOF. DFT …
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Designing Two-Dimensional Nanomaterials for Electrocatalytic Clean Energy Conversion
… their chemical composition. The dopant-induced charge redistribution in the Ni metal 2D layer significantly influences its catalytic performance for the HER in alkaline media. The principle that bridges the dopant effect with the resultant HER activity is visualized with a volcano relationship. …
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Energy-Efficient Data-Processing Architectures - Coping with device and circuit-level nonidealities
L'abstract è presente nell'allegato / the abstract is in the attachment