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 6 of 6 for “"Finite-Size Effect"”.
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STRUCTURE AND PROPERTIES OF PIEZOELECTRIC NANOFIBERS FOR ELECTROMECHANICAL COUPLING APPLICATIONS
… coupling performance, due to the finite size effect and high specific surface areas, one-dimensional (1D) nanostructured piezoelectric materials are attractive. The objective of this research is to investigate the effects of 1D nanostructures on the structural and properties of …
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Theoretical study of Kondo effect and related transport properties in topological insulator systems
… thesis presents theoretical studies of the Kondo effect and related transport properties in topological insulator systems. The thesis mainly covers two topics: the Kondo effect on the surface of a bulk topological insulator material and the Kondo effect in a topological insulator quantum dot. …
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Semi-Empirical Studies on Electronic Properties and Applications of Carbon Nanotubes
… near the Fermi level. We also suggest an effective mechanism to enhance the metal-semiconductor transition by combination of different forms of perturbations. Finally, we study the finite-size effect on the structural and electronic properties of carbon nanotubes. By combining with first …
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Spin Polarization of Ground State Electron Gas at Low Densities
… wavefunction or density matrix at zero and finite temperature, we apply the Variational Density Matrix method. We use Random Phase Approximation to derive two-body Jastrow correlation functions. We also include backflow and threebody correlations in the wavefunction, to get a better upper …
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Localization and delocalization in two-dimensional quantum percolation
… show that the delocalized phase is not merely a finite size effect. In Chapter 3, I examine the same 2D quantum percolation model on highly anisotropic strips of varying width, to investigate why the isotropic lattice results show a delocalized phase, unlike work by others on anisotropic strips, …
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Raman, Infrared, X-ray, and EELS Studies of Nanophase Titania
… Detailed experiments were carried out on the effects of annealing on the Raman and infrared spectra of anatase nanocrystals. The frequencies of the zone-center transverse optical (TO) and longitudinal-optical (LO) phonons of anatase were determined and were used in analyzing the results …