Nanostructured material engineering for ultra-low loss MWIR thermal sensors – A short review

Sharma, Anurag; Kedia, Jyoti; Gupta, Neena

doi:10.1016/j.matpr.2020.05.133

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…With the rapid development of 5G technologies and smart sensors [ 1 , 2 ], low-loss dielectric materials have become a hot research topic in various fields, including applications [ 3 , 4 , 5 ] in the field of ultra large scale integrated circuits [ 5 , 6 , 7 ], microwave devices, and aerospace [ 8 , 9 , 10 , 11 ]. It is essential to accurately test the permittivity and loss tangent of low-loss dielectric materials to meet the application requirements of various fields.…”

Section: Introductionmentioning

confidence: 99%

A Novel Strategy for Detecting Permittivity and Loss Tangent of Low-Loss Materials Based on Cylindrical Resonant Cavity

Zhou

Chen

et al. 2023

Sensors

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Accurate measurement of the permittivity and loss tangent of low-loss materials is essential due to their special applications in the field of ultra large scale integrated circuits and microwave devices. In this study, we developed a novel strategy that can accurately detect the permittivity and loss tangent of low-loss materials based on a cylindrical resonant cavity supporting the TE111 mode in X band (8–12 GHz). Based on an electromagnetic field simulation calculation of the cylindrical resonator, permittivity is precisely retrieved by exploring and analyzing the perturbation of the coupling hole and sample size on the cutoff wavenumber. A more precise approach to measuring the loss tangent of samples with various thicknesses has been proposed. The test results of the standard samples verify that this method can accurately measure the dielectric properties of samples that have smaller sizes than the high Q cylindrical cavity method.

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Section: Introductionmentioning

confidence: 99%

A Novel Strategy for Detecting Permittivity and Loss Tangent of Low-Loss Materials Based on Cylindrical Resonant Cavity

Zhou

Chen

et al. 2023

Sensors

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“…Here, the nonuniform propagation actually implies to randomly vibrating mechanical (or phononic) frequency modes due to the compromise between high-refractive index contrast and mechanical strength between core and cladding 35 . Further, the MWIR wavelengths are propagated as thermally-incoherent radiations 36 and the randomly vibrating phonons results in moving-boundaries of a waveguide 37 . Such incoherence makes it difficult to propagate photons of a multiple wavelengths with similar transmission levels as they are more likely to get scattered by phonons.…”

Section: Introductionmentioning

confidence: 99%

Multispectral transmission through phoxonic crystal slot-waveguide at midwave infrared frequencies

2023

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.We design a multispectral transmission waveguide based on phoxonic crystals at midwave infrared (MWIR) frequencies. The phoxonic crystal slot-waveguide architecture is realized using a germanium (Ge)-slot waveguide, surrounded by a supercell array of oxide holes in silicon–germanium (SiGe) membrane tailored photonic and phononic crystal bandgap. The plane wave simulations for both photonic and phononic crystal unit cells were performed to confirm the geometry of the phoxonic supercell. The bandgap analysis shows the capability of the proposed architecture to confine photons of the terahertz frequency range within the slot waveguide by isolating them from the phonons of gigahertz frequency range. The phononic and photonic bandgaps were simultaneously engineered by varying the periodic variation of the density function and dielectric permittivity, respectively. The computational approach shows the suppression in photon-phonon scattering as validated by a uniform transmission of ∼99.8 % over a broad range of 3 to 5 μm wavelengths. The designed phoxonic crystal waveguide can be fabricated with planar processing technology and used in many applications where multispectral control of mid-IR signals is required.

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IoT and Mobility in Smart Cities

Zafeiriou¹

2020

2020 3rd World Symposium on Communication Engineering (WSCE)

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Nanostructured material engineering for ultra-low loss MWIR thermal sensors – A short review

Cited by 4 publications

References 31 publications

A Novel Strategy for Detecting Permittivity and Loss Tangent of Low-Loss Materials Based on Cylindrical Resonant Cavity

A Novel Strategy for Detecting Permittivity and Loss Tangent of Low-Loss Materials Based on Cylindrical Resonant Cavity

Multispectral transmission through phoxonic crystal slot-waveguide at midwave infrared frequencies

IoT and Mobility in Smart Cities

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