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- Half Heusler, thermoelectric, nanoinclusions, nanomaterial (1)
- Statistical spectral estimation, fundamental frequency estimation, statistical signal processing, Fourier transform, autocorrelation, autoregression (1)
- Strontium Ruthenate, amorphous, polycrystalline, semiconducting characteristics, heterostructures, Terfenol-D, Lead Titanate, magnetoelectric coupling (1)
Articles 1 - 3 of 3
Full-Text Articles in Physics
Statistical Spectral Parameter Estimation Of Acoustic Signals With Applications To Byzantine Music, Kyriakos Michael Tsiappoutas
Statistical Spectral Parameter Estimation Of Acoustic Signals With Applications To Byzantine Music, Kyriakos Michael Tsiappoutas
University of New Orleans Theses and Dissertations
Digitized acoustical signals of Byzantine music performed by Iakovos Nafpliotis are used to extract the fundamental frequency of each note of the diatonic scale. These empirical results are then contrasted to the theoretical suggestions and previous empirical findings. Several parametric and non-parametric spectral parameter estimation methods are implemented. These include: (1) Phase vocoder method, (2) McAulay-Quatieri method, (3) Levinson-Durbin algorithm,(4) YIN, (5) Quinn & Fernandes Estimator, (6) Pisarenko Frequency Estimator, (7) MUltiple SIgnal Characterization (MUSIC) algorithm, (8) Periodogram method, (9) Quinn & Fernandes Filtered Periodogram, (10) Rife & Vincent Estimator, and (11) the Fourier transform. Algorithm performance was very precise. …
Thermoelectric Properties Of Zr0.5hf0.5ni1-Xpdxsn0.99sb0.01 And Effect Of Nanoinclusions On Transport Properties Of Half Heuslers, Rumana Yaqub
University of New Orleans Theses and Dissertations
Thermoelectric materials convert temperature gradients into electricity and vice-versa. These materials utilize the Seebeck effect for power generation and function without moving parts and are highly reliable. The efficiency of thermoelectric devices is related to the dimensionless figure of merit for the constituent materials, defined as where S is the Seebeck coefficient, is the electrical conductivity, is the thermal conductivity and T is the temperature. Maximizing ZT is very challenging because of interdependence of parameters, for example, increasing the electrical conductivity by increasing the carrier concentration invariably lowers S and vice versa. Presently numerous thermoelectric materials are being investigated by …
Pulsed Laser Deposition Of Thin Film Heterostructures, Ezra Garza
Pulsed Laser Deposition Of Thin Film Heterostructures, Ezra Garza
University of New Orleans Theses and Dissertations
Thin films of Strontium Ruthenate have been grown on Strontium Titanate and Lanthanum Aluminate (100) substrates by pulsed laser deposition. X-ray diffraction results show that the films grown on the Strontium Titanate are amorphous and polycrystalline on the Lanthanum Aluminate. Resistances versus temperature measurements show that the films exhibit semiconducting characteristics. In addition to the growth of Strontium Ruthenate thin films, multilayer heterostructures of Terfenol-D thin films on polycrystalline Lead Titanate thin films were grown by pulsed laser deposition. By using a novel experimental technique called magnetic field assisted piezoelectric force microscopy it is possible to investigate the magnetoelectric coupling …