The Sub-THz Emission of the Human Body Under Physiological Stress

Baksheeva, K.A.; Ozhegov, R. V.; Gol’tsman, G.; Kinev, Nickolay V.; Koshelets, V. P.; Kochnev, A.; Betzalel, Noa; Puzenko, Alexander; Ishai, Paul Ben; Feldman, Yuri

doi:10.1109/tthz.2021.3066099

Cited by 13 publications

(13 citation statements)

References 31 publications

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“…The full description of these measurements and their results can be found in Ref. 5. In order to compare to the simulation results one first cast them in terms of an effective brightness temperature.…”

Section: Resultsmentioning

confidence: 99%

“…The qualitive behavior of the simulation result follows closely to that of the radiometric measurements. 5 . The measurements accuracy is ± 1.7 degree.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 12. Comparison of the normalized skin brightness temperature calculated by CST simulations (Red) and by in vivo radiometric measurements of the skin thermal radiation (Black)5 . The measurements accuracy is ± 1.7 degree.…”

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confidence: 99%

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Emission from Human Skin in the Sub THz Frequency Band

Betzalel

Ishai

Puzenko

et al. 2021

Preprint

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Recently published Radiometric measurements of human subjects in the frequency range 480-700 GHz, demonstrate the emission of blackbody radiation from the body core, rather than the skin surface. We present a detailed electromagnetic simulation of the dermis and epidermis, taking into account the presence of the sweat duct. This complex structure can be considered as an electromagnetic bio-metamaterial, whereby the layered structure, along with the topology of the sweat duct, reveals a complex interference pattern in the skin. The model is capable of accurately representing the skin greyness factor as a function of frequency and this is confirmed by radiometry of living human skin.

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Section: Resultsmentioning

confidence: 99%

“…The qualitive behavior of the simulation result follows closely to that of the radiometric measurements. 5 . The measurements accuracy is ± 1.7 degree.…”

Section: Resultsmentioning

confidence: 99%

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Emission from Human Skin in the Sub THz Frequency Band

Betzalel

Ishai

Puzenko

et al. 2021

Preprint

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“…However, the avenues for such monitoring are restricted by what can be emitted via human skin. Recently, Radiometry experiments on human subjects has revealed that in the sub-THz frequency band (480 GHz to 700 GHz) the emitted signal can reflect the level of stress experience by the person 5 . This work suggested the body core temperature as a source of blackbody radiation (T = 37 °C) that was modulated by its passage through the skin.…”

Section: Introductionmentioning

confidence: 99%

Emission from human skin in the sub THz frequency band

Betzalel

Ishai

Puzenko

et al. 2022

Sci Rep

Self Cite

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Recently published Radiometric measurements of human subjects in the frequency range 480–700 GHz, demonstrate the emission of blackbody radiation from the body core, rather than the skin surface. We present a detailed electromagnetic simulation of the dermis and epidermis, taking into account the presence of the sweat duct. This complex structure can be considered as an electromagnetic bio-metamaterial, whereby the layered structure, along with the topology of the sweat duct, reveals a complex interference pattern in the skin. The model is capable of accurately representing the skin greyness factor as a function of frequency and this is confirmed by radiometry of living human skin.

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“…SIR sensitivity and spectral resolution were demonstrated by s atmospheric limb sounding on board a high-altitude balloon [17]. SIR has been successfully implemented in the laboratory for detailed spectral measurements of THz radiation emitted from the BSCCO mesa at frequencies up to 750 GHz [18], as well as for recording sub-THz radiation of the human body under physiological stress [19].…”

Section: Introductionmentioning

confidence: 99%

THz Range Low-Noise SIS Receivers for Space and Ground-Based Radio Astronomy

et al. 2021

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We report on research in the field of low-noise receiving systems in the sub-terahertz (THz) range, carried out in recent years, aimed at developing receivers with quantum sensitivity for implementation in space and ground-based radio telescopes. Superconductor-Insulator-Superconductor (SIS) mixers based on high-quality tunnel junctions are the key elements of the most sensitive sub-THz heterodyne receivers. Motivations and physical background for technology improvement and optimization, as well as fabrication details, are described. This article presents the results of the SIS receiver developments for the 211–275 GHz and 790–950 GHz frequency ranges with a noise temperature in the double sideband (DSB) mode of approximTELY 20 K and 200 K, respectively. These designs and achievements are implemented in the development of the receiving systems for the Russian Space Agency mission “Millimetron”, and for the ground-based APEX (Atacama Pathfinder EXperiment) telescope.

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The Sub-THz Emission of the Human Body Under Physiological Stress

Cited by 13 publications

References 31 publications

Emission from Human Skin in the Sub THz Frequency Band

Emission from Human Skin in the Sub THz Frequency Band

Emission from human skin in the sub THz frequency band

THz Range Low-Noise SIS Receivers for Space and Ground-Based Radio Astronomy

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