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 130 for “"Real-space"”.
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Monte Carlo simulation of real-space transfer transistors
ETDs are only available to UIUC Users without author permission
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Real-space magnetic imaging of the spinel MnV2O4
Controlling multiferroic behavior in materials will enable the development of a wide variety of technological applications. However, the exact mechanisms by which multiferroic behavior arises in many materials are not well understood. One such class of materials are the spinels, including MnV2O4. …
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Real-Space Transfer Transistors Grown by Metalorganic Chemical Vapor Deposition
… the fabrication and characterization of real-space transfer transistors which are grown by metalorganic chemical vapor deposition. In the negative-resistance field-effect transistor and the charge-injection transistor, the standard GaAs electron channel is replaced with a strained-layer …
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Application of machine learning in real-space structural characterization of nanomaterials
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
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Gate current modeling of tunneling real-space transfer transistor with negative differential resistance
… resistance (NDR) on a dual-channel tunneling real-space transfer transistor (TRSTT). The device was fabricated on a GaAs (100) substrate with a GaAs/InGaAs/GaAs straddling heterostructure. According to the experimental data reported by Yu et al. in 2010 [1], they demonstrate an InGaAs and …
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DIRECT REAL-TIME REAL-SPACE IMAGING OF ENERGY TRANSPORT IN ORGANIC SEMI-CONDUCTORS
Efficient energy transport and charge separation in organic semi-conductors are of vital importance in natural light harvesting for photosynthesis and have huge implications for designing a new generation of organic optoelectronic devices such as photovoltaics, light emitting diodes, sensors and so …
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Connecting Small-Angle Diffraction With Real-Space Images by Quantitative TEM of Amorphous Thin Films
… directly correlating small-angle scattering with real-space images. Our studies have allowed us to pinpoint medium range structures which gives rise to small angle scattering, and we have gained insight into structural questions regarding both native oxides and ultrathin gate oxides used in …
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Connecting small-angle diffraction with real-space images by quantitative TEM of amorphous thin-films
… directly correlating small-angle scattering with real-space images. Our studies have allowed us to pinpoint medium range structures which gives rise to small angle scattering, and we have gained insight into structural questions regarding both native oxides and ultrathin gate oxides used in …
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The real space finite element Hartree-Fock method and the thermo-mechanical properties of carbon nanotubes
This thesis consists of two parts. The first part aims to explore the application of the popular method of the finite element method (FEM) in the electronic structure theory. The finite element method is a very general numerical technique in mathematics for solving partial differential equations …
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Theoretical Studies of High Field, High Energy Transport in Gallium-Arsenide, Silicon and Heterostructures
… impact ionization phenomena, and recently real space transfer. It will become even more important as device sizes approach submicron dimensions. Current interest in small devices concerns not only scaling down and VLSI (very large scale integration) but also phenomena such as size …
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CONVERGENGE ANALYSIS ON SVD-BASED ALGORITHMS FOR TENSOR LOW RANK APPROXIMATIONS
… on tensor decompositions and approximations in real space. Among other things, we revisit the classical problem of finding the best rank-R CANDECOMP/PARAFAC(CP) approximation with diff erent cases R > 1 and R = 1 respectively. Unlike the rank-1 approximation is theoretically guaranteed to have a …
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Charge structure of a quasiparticle in graphite measured with inelastic X-ray scattering
… a multi-dimensional, attosecond-resolution, real-space electron density imaging technique. We apply the technique to the energy-loss spectra of graphite, which we measured using inelastic X-ray scattering at the Advanced Photon Source in Argonne, IL. The results are images of the anisotropic …
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Physics and Simulation of High-Speed Heterostructure Devices
… transistor, velocity-modulation transistor, and real-space transfer (negative resistance field-effect transistor, charge injection transistor) transistors.
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Extended-Range Oscillations and the First Sharp Diffraction Peak in Amorphous Silicon: A Systematic Study
… the extended range oscillations on the real-space structure or atomic pair correlation function (PCF). Comparison of observed results with the experimental data shows that the FSDP is sensitive to the extended-range oscillations on real space structure.</p> <p>The RMS deviation and the …
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Partition density functional theory
… and the other two developed from scratch using real-space grids. It is shown that all three of these programs can exactly reproduce a KS-DFT calculation via fragment calculations. The first of our in-house codes handles non-interacting electrons in arbitrary one-dimensional potentials with any …
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Segregation and Phase Dynamics in Supported Bimetallic Nanoparticles
… and $(\surd19$ x $\surd19)R\pm23.4\sp\circ$ real space unit cells as characterized by low energy electron diffraction (LEED). The reactive properties of each overlayer were studied, with respect to the clean Pt(111) surface, using CO as a chemisorption probe.
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Application of high-low method to distance problems
… of the distance set conjectures. In the complex space, my collaborator Sarah Tammen and I proved analogues of the incidence estimates of Guth, Solomon and Wang \cite{WellSpacedTubes} for tubes obeying strong spacing conditions, and we used one of our new estimates to resolve a discretized variant …
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Developments in the Theory of X-ray Absorption and Compton Scattering.
… to a photoelectron, and implemented using FEFF real space Green’s function ab initio code to include solid state effects and intrinsic losses. In the second part, I study valence electron ground state properties as a function of temperature density for Be, Li and Si. I study thermal disorder and …
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Aspects of Non-Perturbative Renormalization
… by Wilson's blocking construction in momentum space: the Wegner-Houghton method uses a sharp momentum cut-off and thus cannot be applied directly to non-constant fields (contradicts with the "derivative expansion"); the Polchinski method is based on a smooth cut-off and thus gives …
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A search for superconductivity in conjugated polymers
… changing the conduction charge doping level real space-charge pairs, bipolarons, can be stabilised in the presence of magnetic impurities within certain parameter regimes. This has been established through direct observation of the calculated lattice order parameter/staggered lattice …
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