Global ETD Search
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Showing 1 to 7 of 7 for “"resonant system"”.
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Upper ocean response to storms: a resonant system
… cooling events. The upper ocean operates as a resonant system with a resonant frequency equal to the local inertial frequency, f. For winds rotating at f during a storm, the input of inertial kinetic energy is maximized, as are the net changes in inertial kinetic energy, potential energy, and …
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Experimental Correlation and Self Consistent Analysis of an Infrared, Fir, Mw Triple Resonant System in Amonnia
In a triple resonant system of NH(,3), the interactions between the IR, FIR, and MW were studied by means of density matrix. The FIR and MW frequencies calculated from the self consistent analysis have been verified by the experiments. The measurements for the MW pressure dependence were justified …
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Experimental correlation and self consistent analysis of an IR, FIR, MW triple resonant system in ammonia
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-16T15:27:49Z No. of bitstreams: 1 1981_lee.pdf: 3513032 bytes, checksum: 36bd5d66a8713ce2d64e8fa53101d808 (MD5)
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Passive damping mechanism of Herschel-Quincke tubes for pressure pulsations in piping systems
… pressure pulsations in industrial piping systems can induce fluctuating loads on inline equipment which may cause fatigue failure and in severe cases, initiate a phenomenon known as acoustic resonance. Passive damping devices such as the Herschel-Quincke (HQ) Tube can be implemented into a …
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Improving piezoelectric energy harvesting power bandwidth with the bias-flip method
… density and ability to self-start. As a high-Q resonant system, however, a PEHD delivers substantial power only when the ambient vibration frequency matches the PEHD's resonant frequency. Unfortunately, manufacturing uncertainties, and variations in ambient vibration frequency make this …
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Development of optomechanofluidic resonators
… flow-cytometry-based techniques. Optomechanical systems efficiently couple photon and phonon modes and various nano/microscale geometries have been investigated to define their properties experimentally. However, significant acoustic radiative losses under liquid contact have restricted their use …
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Performance optimization of lateral-mode thin-film piezoelectric-on-substrate resonant systems
The main focus of this dissertation is to characterize and improve the performance of thin-film piezoelectric-on-substrate (TPoS) lateral-mode resonators and filters. TPoS is a class of piezoelectric MEMS devices which benefits from the high coupling coefficient of the piezoelectric transduction …