Directional and Spectral Control of Thermal Emission and Its Application in Radiative Cooling and Infrared Light Sources

2020 ◽  
Vol 13 (6) ◽  
Author(s):  
Yurui Qu ◽  
Meiyan Pan ◽  
Min Qiu
Keyword(s):  
Thermal Emission ◽  
Infrared Light ◽  
Radiative Cooling ◽  
Light Sources ◽  
Spectral Control

Quantum fountain infrared light sources based on intersubband emissions in quantum wells

1999 ◽  
Vol 09 (PR2) ◽  
pp. Pr2-161
Author(s):  
F. H. Julien ◽  
P. Boucaud ◽  
S. Sauvage ◽  
O. Gauthier-Lafaye ◽  
Z. Moussa
Keyword(s):  
Quantum Wells ◽  
Infrared Light ◽  
Light Sources

New Mid-Infrared Light Sources

2012 ◽  
Vol 18 (1) ◽  
pp. 531-540 ◽  
Author(s):  
Jens Biegert ◽  
Philip K. Bates ◽  
Olivier Chalus
Keyword(s):  
Infrared Light ◽  
Light Sources ◽  
Mid Infrared

Structures of Biomolecular Ions in the Gas Phase Probed by Infrared Light Sources

2013 ◽  
Vol 6 (1) ◽  
pp. 267-285 ◽  
Author(s):  
Corey N. Stedwell ◽  
Johan F. Galindo ◽  
Adrian E. Roitberg ◽  
Nicolas C. Polfer
Keyword(s):  
Gas Phase ◽  
Infrared Light ◽  
Light Sources ◽  
Biomolecular Ions

scholarly journals Effect of light on aggregational behavior of planarian Dugesia tigrina

2017 ◽  
Author(s):  
Jaemin Lee
Keyword(s):  
Defense Mechanisms ◽  
Uv Light ◽  
Infrared Light ◽  
Light Sources ◽  
Initial Exposure ◽  
Dugesia Tigrina ◽  
Wide Range ◽  
Photophobic Response ◽  
Negative Effect ◽  
Effect Of Light

Introduction. Planarians are renowned for their regenerative ability due to pluripotent stem cells, as well as their peculiar photophobic response. However, few facts are known about their aggregational behavior. This study aims to reveal the effect of light on aggregational behavior. Reynierse (1966) suggested that light has a negative effect on the formation of aggregations. However, one of his objectives for aggregational behavior was inappropriate. This study reevaluated the effect of existence of light on aggregational behavior, as well as ascertained the effect of wavelength on the formation of aggregations. Methods. In this study, the ratio of individuals participating in aggregations was measured as a criterion to determine aggregational behavior. Aggregational behavior was measured after two hours from the initial exposure to different light sources. The behaviors under white LED light and under shade were compared, as well as the behaviors under five different light sources: infrared lamp, red, green, blue LED, and ultraviolet lamp. Results. The existence of light interfered the formation of aggregations (t-test, p < 0.0001), which supports the former study of Reynierse. Also, aggregational behavior differed under different wavelengths (ANOVA, p < 0.0001). Except for the infrared light which emitted a wide range of wavelengths, the behavior showed hierarchy: decreasing aggregational behavior in accordance with decreasing wavelength. UV light has the most significant negative effect on the formation of aggregations. Discussion. Exposure to light caused negative effects on performing aggregational behavior. Participation in aggregations appears to be influenced by photophobic response, especially under lights of short wavelength. Disintegrating aggregations under exposure to lights can potentially bring evolutionary benefit. This behavior possibly makes the aggregating planarians altogether exposed to a higher risk or predation, considering that they lack defense mechanisms. Planarians can lower the risk and continue the populations by disintegrating the aggregational behavior under the existence of UV and lights of higher wavelength, which are indicatives of daytime. Understanding aggregational behavior of animals of a lower order would give better insight on general herding behavior, and potentially help interpreting more complex behaviors of higher animals.

Integration of Mid-Infrared Light Sources on Silicon-Based Waveguide Platforms in 3.5–4.7 μm Wavelength Range

2019 ◽  
Vol 25 (6) ◽  
pp. 1-9 ◽  
Author(s):  
Aditya Malik ◽  
Alexander Spott ◽  
Eric J. Stanton ◽  
Jonathan D. Peters ◽  
Jeremy Daniel Kirch ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Infrared Light ◽  
Light Sources ◽  
Mid Infrared ◽  
Silicon Based

Design of single-mode narrow-bandwidth thermal emitters for enhanced infrared light sources

2012 ◽  
Vol 30 (1) ◽  
pp. 165 ◽  
Author(s):  
Takuya Inoue ◽  
Takashi Asano ◽  
Menaka De Zoysa ◽  
Ardavan Oskooi ◽  
Susumu Noda
Keyword(s):  
Single Mode ◽  
Infrared Light ◽  
Light Sources ◽  
Narrow Bandwidth ◽  
Thermal Emitters

Spatial and spectral control of infrared thermal emission in VO2-based composite nanoantennas (Conference Presentation)

2018 ◽  
Author(s):  
Marco Centini ◽  
Gianmario Cesarini ◽  
Maria Cristina Larciprete ◽  
Alessandro Belardini ◽  
Roberto Li Voti ◽  
...  
Keyword(s):  
Thermal Emission ◽  
Spectral Control

Anisotropic Polarized Emission of a Doped Silicon Lamellar Grating

2006 ◽  
Vol 129 (1) ◽  
pp. 11-16 ◽  
Author(s):  
F. Marquier ◽  
M. Laroche ◽  
R. Carminati ◽  
J.-J. Greffet
Keyword(s):  
Surface Plasmons ◽  
Angular Dependence ◽  
Thermal Emission ◽  
Azimuthal Angle ◽  
Radiative Cooling ◽  
Polarized Emission ◽  
Doped Silicon ◽  
Resonant Emission ◽  
Thermal Sources ◽  
Total Hemispherical Emissivity

Thermal emission of a doped silicon grating has been studied in the plane perpendicular to the grooves. We show how the excitation of surface plasmons produce a resonant emission weakly depending on the polarization and azimuthal angle. We analyze in detail the polarization and angular dependence of the emission out of the plane perpendicular to the grooves. Two kinds of thermal sources, directional and quasi-isotropic, are studied. They have been designed in a previous paper. We also compute the total hemispherical emissivity of these gratings. In addition we show that in applications such as radiative cooling, these sources are less efficient than other structures.

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