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 13 of 13 for “"Blackbody radiation"”.
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Semi-Empirical Lifetimes for High-Energy Rydberg States of ¹³³Cs Neutral Cesium in a Blackbody Radiation Field
… out at higher temperatures which allow thermal radiation to significantly deplete the lifetime of states with principal quantum number greater than. n≈16 Therefore we have also explicitly included blackbody-induced transitions in our calculations, in order to evaluate the lifetimes at …
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Classical capacity of the free-space quantum-optical channel
… fluctuations emanating from a background blackbody radiation source at thermal equilibrium.
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Development of antenna-coupled metal-insulator-metal diodes for infrared detection
… imaging purposes because it coincides with the blackbody radiation peak of the human body and a low absorption window in the earth’s atmosphere. Also, at 10 µm wavelength, the earth’s terrestrial radiation is maximized and provides a good opportunity for untapped energy harvesting. These two …
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Investigation of nanoscale thermal radiation : theory and experiments
… and camouflage in military applications. Thermal radiation at the nanometer scale is significantly different from classical or macroscopic radiative energy transport - wave effects, such as interference and diffraction, and near-field effects play a significant role. By modeling thermal radiation …
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The Effect of High Transverse Electric Fields on Thermal Radiation
… this assumption. A flared concentric cylinder blackbody radiation source has been constructed in which a large electric field can be applied to the emitting surfaces to determine if radiative heat transfer can be modified by applied electric fields. A Monte Carlo analysis of this cavity was …
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Photon management in thermal and solar photovoltaics
… structures, measurement of near-field thermal radiation, optical absorption in silicon nanowire structures, surface-plasmon enhanced near-bandgap optical absorption in silicon, and selective absorber surface for solar thermal applications. For thermophotovoltaic systems, the work is focused on …
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Full spectrum utilization for high-efficiency solar energy conversion
… broadband sunlight to narrow-band thermal radiation tuned for a photovoltaic cell. We demonstrated the highest STPV efficiency to date through the suppression of 80% of sub-bandgap blackbody radiation by pairing a one-dimensional photonic-crystal selective emitter with a tandem …
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Probing extraordinary nanoscale energy transfer using bimaterial microcantilevers
… phenomena at the nanoscale including near-field radiation beyond Planck's law, high thermal conductivity polymers and the optical absorption of micro/nanostructures. First, surface phonon polaritons, which is one type of electromagnetic surface waves, are demonstrated to enhance the thermal …
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Ultrafast Terahertz Spectroscopy for the Manipulation and Elucidation of Correlated Quantum Materials
… of quantum mechanics. The photoelectric effect, blackbody radiation, and the hydrogen emission spectrum were all experimental observations using light and its interaction with matter which led to the discovery of the quantum mechanical nature of the universe. In modern research, the interactions …
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Experimental investigations of the role of proximity approximation in near-field radiative transfer
… law. At larger gaps, conventional theory of blackbody radiation is sufficient to describe the radiative transfer; at smaller gaps, however, wave effects such as evanescent wave tunneling, interference and diffraction render the classical theory invalid. The change in radiative transfer …
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Laser-induced incandescence for soot diagnostics at high pressure
… laser pulse and subsequent cooling due to near-blackbody radiation and different compet-ing heat-loss paths. This process was modeled by setting up an energy and mass balance for the differ-ent heat- and mass-loss mechanisms. Recent advancements on the different sub-models were com-bined in a …