SPECTRAL CONTROL OF THERMAL RADIATION BY EXCITATION OF MAGNETIC POLARITONS

2020 ◽  
Vol 23 ◽  
pp. 167-197
Author(s):  
Liping Wang
Keyword(s):  
Thermal Radiation ◽  
Spectral Control ◽  
Magnetic Polaritons

Spectral Control of Thermal Radiation Using Metal-Dielectric Multilayers for High-Temperature Usage Over 1000°C

2016 ◽  
Author(s):  
Makoto Shimizu ◽  
Asaka Kohiyama ◽  
Fumitada Iguchi ◽  
Hiroo Yugami
Keyword(s):  
Thermal Radiation ◽  
High Efficiency ◽  
Radiation Spectrum ◽  
Layer Structure ◽  
Short Wavelength Range ◽  
Coating Technology ◽  
Selective Coating ◽  
Spectrally Selective ◽  
Spectral Control ◽  
Layer Coating

The spectrally selective coating technology which can be applicable for solar-thermophotovoltaic (solar-TPV) generation systems is described in this paper. In solar-TPV system, the spectrally selective absorber plays a key role to obtain high-efficiency. The technologies of controlling thermal radiation spectrum at temperature over 1000°C, however, have not been established yet. We focus on metal-dielectric multi-layer coating. This selective coating shows enormously high absorptance at short wavelength range and sharp cutoff property. Thermal stability test confirms that this multi-layer structure can be one of the candidates for the selective coatings for solar-TPV systems.

Spectral control of thermal radiation from metals by using periodic surface micro structures

2002 ◽  
Vol 2002.4 (0) ◽  
pp. 29-30
Author(s):  
Hiroo YUGAMI ◽  
Hitoshi SAI ◽  
Yshiaki KANAMORI ◽  
Kazuhiro HANE
Keyword(s):  
Thermal Radiation ◽  
Periodic Surface ◽  
Spectral Control ◽  
Micro Structures

scholarly journals Incandescent Light Bulbs Based on a Refractory Metasurface

Photonics ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 105
Author(s):  
Hirofumi Toyoda ◽  
Kazunari Kimino ◽  
Akihiro Kawano ◽  
Junichi Takahara
Keyword(s):  
Thermal Radiation ◽  
Light Source ◽  
High Efficiency ◽  
Resonant Peak ◽  
Light Bulb ◽  
Incandescent Light ◽  
Hafnium Nitride ◽  
Radiative Power ◽  
New Type ◽  
Spectral Control

A thermal radiation light source, such as an incandescent light bulb, is considered a legacy light source with low luminous efficacy. However, it is an ideal energy source converting light with high efficiency from electric power to radiative power. In this work, we evaluate a thermal radiation light source and propose a new type of filament using a refractory metasurface to fabricate an efficient light bulb. We demonstrate visible-light spectral control using a refractory metasurface made of tantalum with an optical microcavity inserted into an incandescent light bulb. We use a nanoimprint method to fabricate the filament that is suitable for mass production. A 1.8 times enhancement of thermal radiation intensity is observed from the microcavity filament compared to the flat filament. Then, we demonstrate the thermal radiation control of the metasurface using a refractory plasmonic cavity made of hafnium nitride. A single narrow resonant peak is observed at the designed wavelength as well as the suppression of thermal radiation in wide mid-IR range under the condition of constant surface temperature.

High-temperature resistive surface grating for spectral control of thermal radiation

2003 ◽  
Vol 82 (11) ◽  
pp. 1685-1687 ◽  
Author(s):  
Hitoshi Sai ◽  
Yoshiaki Kanamori ◽  
Hiroo Yugami
Keyword(s):  
High Temperature ◽  
Thermal Radiation ◽  
Surface Grating ◽  
Spectral Control

Spectral Control of Near-Field Thermal Radiation With Periodic Cross Resonance Metasurfaces

2018 ◽  
Vol 54 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Kezhang Shi ◽  
Fanglin Bao ◽  
Sailing He
Keyword(s):  
Thermal Radiation ◽  
Near Field ◽  
Spectral Control

Spectral Control of Thermal Radiation Using Micro-Structured Emitter-Surface for Thermophotovoltaic Generation of Electricity

2007 ◽  
Author(s):  
Katsunori Hanamura ◽  
Yuki Kameya
Keyword(s):  
Thermal Radiation ◽  
Near Infrared ◽  
Infrared Region ◽  
Point Sources ◽  
Cavity Resonance ◽  
Emissive Power ◽  
Spectral Emittance ◽  
Simulation And Experiment ◽  
Spectral Control

Spectral control of thermal radiation emitted from micro-cavities made on a mirror-like-polished Ni metal surface was investigated through numerical simulation and experiment. In simulation, thermal radiation from solid surface was dealt as hemispherical emission from point sources, and Maxwell’s equations were solved using CIP (Cubic Interpolated Propagation) method. It was demonstrated that the emittance could be increased around the wavelength corresponding to the standard mode of cavity resonance, while the emittance at wavelengths corresponding to the higher modes was much the same as that of smooth flat surface. Furthermore, in experiment using rectangular micro-cavities (0.5×0.5×0.5μm3) made periodically on Ni smooth surface, spectral emittance was measured in the near-infrared region. The experimental results disclosed that the emissive power only in the range of shorter wavelength than 1.2μm was increased by the micro-cavities that played a role of a wave guide to produce cutoff effect clearly.

201 Spectral control of thermal radiation of W with periodic surface microstructures for TPV applications

2001 ◽  
Vol 2001.36 (0) ◽  
pp. 48-49
Author(s):  
Hitoshi SAI ◽  
Hiroo YUGAMI ◽  
Yoshiaki KANAMORI ◽  
Kazuhiro HANE
Keyword(s):  
Thermal Radiation ◽  
Periodic Surface ◽  
Spectral Control ◽  
Surface Microstructures
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