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 37 for “"Charge Dynamics"”.
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Space charge dynamics of liquids.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1970. Sc.D.
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Charge dynamics in superconducting double dots
… consists of a two level manifold of even charge parity Cooper pair states, and continuous bands corresponding to charge states with single quasiparticles in one or both islands. These devices are fabricated using shadow mask evaporation, and are measured at sub Kelvin temperatures using a …
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Spin and Charge Dynamics in Organic Semiconductors
… previously established limitations. Moreover, charge transport in donor-donor (d-d) polymers and donor-acceptor (d-a) poly mers is studied with results discussed in chapter 8 while the underlying theory is discussed in chapter 2. We study 4 d-d derivatives of the polymer IDT-BT that has gained …
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Spectroscopic Studies of Charge Dynamics in Non-Fullerene Organic Solar Cells
… achieved. Furthermore, they have shown efficient charge separation with negligible energy loss, overcoming one of the crucial limitations of fullerene based OSC. Here, we present a study on the charge generation, separation, and recombination dynamics of non-fullerene solar cells. We investigate …
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Space-charge dynamics and neutron generation in an inertial-electrostatic confinement device
Inertial-Electrostatic Confinement (IEC) is an alternative approach to fusion power that offers the ability to burn advanced fuels like D-He$\sp3$ in a non-Maxwellian, high density core. These aneutronic reactions are ideal for direct energy conversion.
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Nonlinear THz emission spectroscopy of spin and charge dynamics in correlated materials
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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A study of electrochemical transport and diffuse charge dynamics using a Langevin equation
… to study electrochemical transport and diffuse charge dynamics at small scales. Previous efforts at modeling electrokinetic phenomena at scales where the noncontinuum effects become significant have included continuum models based on the Poisson-Nernst-Planck equations and atomic simulations …
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Revealing ion transfer kinetics and charge dynamics at operating battery materials through scanning electrochemical microscopy
Interfacial charge transfer plays a critical role in battery technologies, where it governs the rate of reliable ion or electron movement to and from a battery electrode during charge/discharge. As such, issues with performance are often linked to trouble at the interface across many technologies. …
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A study of electrochemical transport and diffuse charge dynamics in nanoscale devices using a Langevin equation
… to study electrochemical transport and diffuse charge dynamics at small scales. Previous efforts at modeling electrokinetic phenomena at scales where non-continuum effects become significant have included continuum models based on the Poisson-Nernst-Planck equations and atomic simulations using …
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Development of a Parallel Hybrid Energy Management Strategy with Consideration of Drive Quality and State of Charge Dynamics
… Algorithms are proposed for battery state of charge (SOC) management including engine loading and one pedal strategies. Vehicle drive quality with the hybrid control strategy is analyzed, with acceleration and jerk managed through axle torque rate limits and filters. The simulated control …
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A study of the charge structure and energy utilisation in a Stirred Media Detritor using DEM-SPH
… with protruding impeller arms for agitating the charge. There is currently limited understanding of charge structure and motion in the SMD, particularly the interaction of the media and the slurry. Additionally, the number of arms and their arrangement on the shaft, are important aspects of the …
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Probe of Coherent and Quantum States in Narrow-Gap Based Semiconductors in the Presence of Strong Spin-Orbit Coupling
… The emphasis was on dynamical aspects such as charge and spin dynamics in order to address several important issues of the spin-related phenomena. The objectives in this project were to: 1) understand charge/spin dynamics in NGS with different confinement potentials, 2) study phenomena such as …
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Space charge determination in HVDC power cable and its influence on electric field
… as the accumulation of comprehensive immobile charges in the XLPE, this superimposes to the Laplacian field resulting the changes of electric stress across the dielectric material. Additionally, in most HVDC transmission systems both the presence of temperature gradient across its insulation …
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Comparative of Flammable and Toxic Gas Sensing behavior for Rare-Earth Elements Substituted Cobalt based Spinel Ferrites
… Due to their electronic configuration and charge dynamics, they are very sensitive and selective to integrative liquefied petroleum gases (LPG). A high response of over 730 was recorded towards 1 vol% (or 10 000 ppm) of LPG at 225 °C. The CoSm0.1Fe1.9O4 nano-ferrite meets the criteria of a …
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Relaxation Dynamics of Photoexcited Carriers in Graphene
… let alone studies specifically looking at charge dynamics of photo-excited carriers in graphene. So in the third chapter, a homebuilt near-infrared pump and mid-infrared probe spectroscopy system is described which is designed to have a high temporal resolution to study photo-excited …
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Modular modeling and control of a hybrid unmanned aerial vehicle’s powertrain
… of multi-domain and multi-timescale system dynamics. This thesis seeks to address the challenge of coordination between the slow battery state of charge dynamic and faster electro-mechanical dynamics for a hybrid unmanned aerial vehicle. The graph-based modeling framework for multi-domain …
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Dynamic polarizability and collective modes in narrow-band electron systems
… Strong interactions alter the collective charge dynamics in a number of interesting ways, in particular by stiffening the frequency-momentum dispersion of surface plasmons and making it much stronger than that of the underlying narrow-band carriers. Strongly dispersing plasmons pierce …
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Time-Resolved Studies of Magnetic and Non-Magnetic Narrow-Gap Semiconductors
… frequencies, it is important to understand dynamics in semiconductors such as NGS on femtosecond time-scales. In this thesis, time-resolved studies of magnetic and non-magnetic NGS using ultrafast-laser spectroscopy techniques such as pump-probe spectroscopy and magneto-optical Kerr/Faraday …
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