Unconventional Electromagnetic Response of Strongly Coupled Nanoparticles in the Thermal Infrared Region: Link with Effective Medium Properties and Incoherent Fields

2022 ◽  
pp. 2100245
Author(s):  
Timothée Guerra ◽  
Domingos De Sousa Meneses ◽  
Jean‐Paul Hugonin ◽  
Cédric Blanchard
Keyword(s):  
Thermal Infrared ◽  
Infrared Region ◽  
Effective Medium ◽  
Electromagnetic Response ◽  
Strongly Coupled

scholarly journals Electromagnetic response of strongly coupled plasmas

2014 ◽  
Vol 2014 (11) ◽  
Author(s):  
Davide Forcella ◽  
Andrea Mezzalira ◽  
Daniele Musso
Keyword(s):  
Electromagnetic Response ◽  
Strongly Coupled ◽  
Strongly Coupled Plasmas ◽  
Coupled Plasmas

scholarly journals Application of a Terahertz System Combined with an X-Shaped Metamaterial Microfluidic Cartridge

Micromachines ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 74
Author(s):  
Shih-Ting Huang ◽  
Shen-Fu Hsu ◽  
Kai-Yuan Tang ◽  
Ta-Jen Yen ◽  
Da-Jeng Yao
Keyword(s):  
Far Infrared ◽  
Infrared Region ◽  
Microfluidic System ◽  
Electromagnetic Response ◽  
Thz Radiation ◽  
Similar Species ◽  
Label Free ◽  
Plasmonic Sensor ◽  
Molecular Fingerprint ◽  
Highly Sensitive Detection

Terahertz (THz) radiation has attracted wide attention for its ability to sense molecular structure and chemical matter because of a label-free molecular fingerprint and nondestructive properties. When it comes to molecular recognition with terahertz radiation, our attention goes first towards the absorption spectrum, which is beyond the far infrared region. To enhance the sensitivity for similar species, however, it is necessary to apply an artificially designed metamaterial sensor for detection, which confines an electromagnetic field in an extremely sub-wavelength space and hence receives an electromagnetic response through resonance. Once the resonance is caused through the interaction between the THz radiation and the metamaterial, a minute variation might be observed in the frequency domain. For a geometric structure of a metamaterial, a novel design called an X-shaped plasmonic sensor (XPS) can create a quadrupole resonance and lead to sensitivity greater than in the dipole mode. A microfluidic system is able to consume reagents in small volumes for detection, to diminish noise from the environment, and to concentrate the sample into detection spots. A microfluidic device integrated with an X-shaped plasmonic sensor might thus achieve an effective and highly sensitive detection cartridge. Our tests involved not only measurements of liquid samples, but also the performance of a dry bio-sample coated on an XPS.

scholarly journals Dust Identification over Arid and Semiarid Regions of Asia Using AIRS Thermal Infrared Channels

2014 ◽  
Vol 2014 ◽  
pp. 1-16 ◽  
Author(s):  
Hui Xu ◽  
Tianhai Cheng ◽  
Donghai Xie ◽  
Jiaguo Li ◽  
Yu Wu ◽  
...  
Keyword(s):  
Northern China ◽  
Thermal Infrared ◽  
Infrared Region ◽  
Discrete Ordinates ◽  
Orthogonal Polarization ◽  
Identification Algorithm ◽  
Semiarid Regions ◽  
Infrared Signature ◽  
Moderate Resolution Imaging Spectroradiometer ◽  
Arid And Semiarid

Asia dust generated in northern China exerts significant influences on regional air quality, weather, and climate. In this study, a dust identification algorithm over arid and semiarid regions of Asia was proposed based on the thermal observations of atmospheric infrared sounder (AIRS). Firstly, a combination of the line-by-line (LBL) and discrete ordinates radiative transfer (DISORT) model was utilized to investigate the thermal infrared signatures of dust and cloud in 800–1250 cm−1region. Secondly, six channels in the thermal infrared region were selected from AIRS to monitor dust from space, and a further sensitivity analysis for dust and cloud under different conditions was also performed. Then, the description of the detailed identification method was provided based on distinct thermal infrared signature of dust. At last, several dust events that observed in northern China between the period of 2008 and 2012 were analyzed, and the usefulness of monitoring the outbreaks of Asian dust was emphasized through the comparison with moderate resolution imaging spectroradiometer (MODIS) visible observations and cloud aerosol lidar with orthogonal polarization (CALIOP) data in this study.

Imaging and Spatially Resolved Spectroscopy of AFGL 2688 in the Thermal Infrared Region

2002 ◽  
Vol 572 (1) ◽  
pp. 276-287 ◽  
Author(s):  
Miwa Goto ◽  
Naoto Kobayashi ◽  
Hiroshi Terada ◽  
A. T. Tokunaga
Keyword(s):  
Thermal Infrared ◽  
Infrared Region ◽  
Spatially Resolved ◽  
Spatially Resolved Spectroscopy

scholarly journals Quantification of the Adjacency Effect on Measurements in the Thermal Infrared Region

2019 ◽  
Vol 57 (12) ◽  
pp. 9674-9687 ◽  
Author(s):  
Xiaopo Zheng ◽  
Zhao-Liang Li ◽  
Xia Zhang ◽  
Guofei Shang
Keyword(s):  
Thermal Infrared ◽  
Infrared Region

Interpretation of Data in the Thermal Infrared Region

2003 ◽  
pp. 183-216 ◽  
Author(s):  
Ravi Prakash Gupta
Keyword(s):  
Thermal Infrared ◽  
Infrared Region

scholarly journals Effective medium concept in temporal metamaterials

Nanophotonics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 379-391 ◽  
Author(s):  
Victor Pacheco-Peña ◽  
Nader Engheta
Keyword(s):  
Scientific Community ◽  
Effective Permittivity ◽  
Step Function ◽  
Effective Medium ◽  
Electromagnetic Response ◽  
Multilayered Structures ◽  
Filling Fraction ◽  
Time Harmonic ◽  
Matter Interaction ◽  
Materials Used

AbstractMetamaterials are mostly designed in the time-harmonic scenario where wave propagation can be spatially manipulated. Tailoring the electromagnetic response of media in time has also gained the attention of the scientific community in order to achieve further control on wave-matter interaction both in space and time. In the present work, a temporally effective medium concept in metamaterial is theoretically investigated as a mechanism to create a medium with a desired effective permittivity. Similar to spatially subwavelength multilayered metamaterials, the proposed “temporal multilayered”, or “multistepped” metamaterial, is designed by alternating in time the permittivity of the medium between two values. In so doing, the temporally periodic medium can be modeled as an effective metamaterial in time with an effective permittivity initiated by a step function. The analogy between the temporal multistepped and the spatial multilayered metamaterials is presented demonstrating the duality between both domains. The proposed temporal metamaterial is analytically and numerically evaluated showing an excellent agreement with the designed parameters. Moreover, it is shown how the effective permittivity can be arbitrarily tailored by changing the duty cycle of the periodic temporal metamaterial. This performance is also connected to the spatial multilayer scenario in terms of the filling fraction of the different materials used to create the multilayered structures.

scholarly journals Emission spectra in the thermal infrared region

1981 ◽  
Author(s):  
Graham R. Hunt
Keyword(s):  
Emission Spectra ◽  
Thermal Infrared ◽  
Infrared Region

scholarly journals Observations of Gas and Dust in Comets with the Infrared Space Observatory

2000 ◽  
Vol 197 ◽  
pp. 461-470 ◽  
Author(s):  
J. Crovisier
Keyword(s):  
High Resolution ◽  
Thermal Infrared ◽  
Infrared Region ◽  
Production Rates ◽  
Space Observatory ◽  
Infrared Space Observatory ◽  
Water Ice ◽  
Spectroscopic Observations ◽  
Celestial Bodies

The Infrared Space Observatory (ISO) offered us the opportunity to observe celestial bodies from 2.4 to 196 μm, which is of particular interest for comets. We present here spectroscopic observations with ISO of comets C/1995 O1 (Hale-Bopp) and 103P/Hartley 2. Fluorescence emissions of H2O, CO2 and (for comet Hale-Bopp only) CO and CH4 are observed, yielding the production rates of these species. High-resolution spectra of water permit the study of the rotational and spin temperatures of this molecule. In comet Hale-Bopp, the thermal infrared region of the spectra shows specifically, in addition to continuum-like emission, the signatures of crystalline, Mg-rich olivine (forsterite), and signs of crystalline pyroxenes, amorphous silicates and water ice. The presence of crystalline silicates is also suggested in the Jupiter-family comet P/Hartley 2.

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