scholarly journals Novel and efficient Mie-metamaterial thermal emitter for thermophotovoltaic systems

2016 ◽  
Vol 24 (10) ◽  
pp. A868 ◽  
Author(s):  
Alok Ghanekar ◽  
Laura Lin ◽  
Yi Zheng
Keyword(s):  
Thermal Emitter ◽  
Thermophotovoltaic Systems

scholarly journals Mie-Metamaterials-Based Thermal Emitter for Near-Field Thermophotovoltaic Systems

Materials ◽  
2017 ◽  
Vol 10 (8) ◽  
pp. 885 ◽  
Author(s):  
Alok Ghanekar ◽  
Yanpei Tian ◽  
Sinong Zhang ◽  
Yali Cui ◽  
Yi Zheng
Keyword(s):  
Near Field ◽  
Thermal Emitter ◽  
Thermophotovoltaic Systems

Low-workfunction field-emission source for high-resolution EELS

1987 ◽  
Vol 45 ◽  
pp. 132-133
Author(s):  
P. E. Batson
Keyword(s):  
High Resolution ◽  
Energy Loss ◽  
Electron Probe ◽  
Collection Efficiency ◽  
Electron Sources ◽  
Wien Filter ◽  
Half Angle ◽  
Thermal Emitter ◽  
Electron Energy Loss ◽  
Intrinsic Energy

In recent years,instrumentation for electron energy loss spectroscopy (EELS) has been steadily improved to increase energy resolution and collection efficiency. At present 0.40eV at 10mR collection half angle is available with commercial magnetic sectors (e.g. Gatan, Inc. and VG Microscopes, Ltd.), and 70meV at 10mR has been demonstrated by use of a Wien filter within a large deceleration field. When these high resolution spectrometers are coupled to the modern small electron probe instrument, we obtain a tool which promises to reveal local changes in bandstructure and bonding near defects and interfaces in heterogeneous materials.Unfortunately, typical electron sources have intrinsic energy widths which limit attainable spectroscopic resolution in the absence of some monochromation system. For instance, the W thermal emitter has a half width of about 1eV.

scholarly journals Hyperspectral Molecular Orientation Mapping in Metamaterials

2021 ◽  
Vol 11 (4) ◽  
pp. 1544
Author(s):  
Meguya Ryu ◽  
Yoshiaki Nishijima ◽  
Shinya Morimoto ◽  
Naoki To ◽  
Tomoki Hashizume ◽  
...  
Keyword(s):  
Molecular Orientation ◽  
Field Enhancement ◽  
Chemical Mapping ◽  
Metal Insulator ◽  
Orientation Mapping ◽  
Metal Insulator Metal ◽  
Finger Printing ◽  
Thermal Emitter ◽  
Ir Bands ◽  
Sub Wavelength

The four polarisation method is adopted for measurement of molecular orientation in dielectric nanolayers of metal-insulator-metal (MIM) metamaterials composed of gold nanodisks on polyimide and gold films. Hyperspectral mapping at the chemical finger printing spectral range of 4–20 μμm was carried out for MIM patterns of 1–2.5 μμm period (sub-wavelength). Overlay images taken at 0,π4,π2,3π4 orientation angles and subsequent baseline compensation are shown to be critically important for the interpretation of chemical mapping results and reduction of spurious artefacts. Light field enhancement in the 60-nm-thick polyimide (I in MIM) was responsible for strong absorption at the characteristic polyimide bands. Strong absorbance A at narrow IR bands can be used as a thermal emitter (emittance E=1−R), where R is the reflectance and A=1−R−T, where for optically thick samples the transmittance is T=0.

scholarly journals Overcoming the black body limit in plasmonic and graphene near-field thermophotovoltaic systems

2012 ◽  
Vol 20 (S3) ◽  
pp. A366 ◽  
Author(s):  
Ognjen Ilic ◽  
Marinko Jablan ◽  
John D. Joannopoulos ◽  
Ivan Celanovic ◽  
Marin Soljačić
Keyword(s):  
Near Field ◽  
Black Body ◽  
Thermophotovoltaic Systems

scholarly journals On-Chip Narrowband Thermal Emitter for Mid-IR Optical Gas Sensing

ACS Photonics ◽  
2017 ◽  
Vol 4 (6) ◽  
pp. 1371-1380 ◽  
Author(s):  
Alexander Lochbaum ◽  
Yuriy Fedoryshyn ◽  
Alexander Dorodnyy ◽  
Ueli Koch ◽  
Christian Hafner ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Thermal Emitter ◽  
Optical Gas Sensing ◽  
On Chip

scholarly journals Aperiodic multilayer graphene based tunable and switchable thermal emitter at mid-infrared frequencies

2018 ◽  
Vol 124 (23) ◽  
pp. 233101 ◽  
Author(s):  
S. Sharifi ◽  
Y. M. Banadaki ◽  
V. F. Nezhad ◽  
G. Veronis ◽  
J. P. Dowling
Keyword(s):  
Multilayer Graphene ◽  
Mid Infrared ◽  
Thermal Emitter ◽  
Infrared Frequencies

Metallic metasurface as a directional and monochromatic thermal emitter

2015 ◽  
Author(s):  
Francois Marquier ◽  
Daniele Costantini ◽  
Anthony Lefebvre ◽  
Anne-Lise Coutrot ◽  
Ioana Moldovan-Doyen ◽  
...  
Keyword(s):  
Thermal Emitter

Highly tunable thermal emitter with vanadium dioxidemetamaterials for radiative cooling

2021 ◽  
Author(s):  
Yuanlin Jia ◽  
Xiaoxia Wang ◽  
Huaiyuan Yin ◽  
Huawei Yao ◽  
junqiao Wang ◽  
...  
Keyword(s):  
Radiative Cooling ◽  
Thermal Emitter
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