太赫兹频率区域表皮等效模型的光谱评估

IF 1.6 4区地球科学 Q3 ASTRONOMY & ASTROPHYSICS

Radio Science Pub Date : 2024-03-01 DOI:10.1029/2023RS007809

Maya Mizuno;Shota Yamazaki;Tomoaki Nagaoka

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引用次数: 0

摘要

在太赫兹频率区域评估了表皮等效模型的复折射率和反射率。使用太赫兹时域光谱仪测量了使用超纯水、矿物油、甘油脂肪酸酯和琼脂制作的表皮和表皮等效模型的复折射率。表皮和表皮等效模型的复折射率一致。然而，它们的平均反射率相差约 3%。在表皮等效模型中加入表面粗糙度后，差异消失了。因此，我们发现表皮等效模型表面的粗糙度是确保在 0.2 THz 至 0.6 THz 频率范围内模型反射率与表皮反射率相匹配的必要条件。

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Spectroscopic evaluation of epidermis-equivalent phantom in terahertz-frequency region

The complex refractive index and reflectance of an epidermis-equivalent phantom were evaluated in the terahertz-frequency region. The complex refractive indices of the epidermis and the epidermis-equivalent phantom, made using ultrapure water, mineral oil, glycerin fatty acid ester, and agar, were measured using a terahertz time-domain spectrometer. The complex refractive indices of the epidermis and the epidermis-equivalent phantom were in agreement. However, their mean reflectances had a difference of approximately 3%. The difference disappeared on adding surface roughness to the epidermis-equivalent phantom. Thus, we found that roughness of the surface of the epidermis-equivalent phantom was required to ensure a match of the reflectance of the phantom with that of the epidermis at frequencies from 0.2 THz to 0.6 THz.

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来源期刊

Radio Science 工程技术-地球化学与地球物理

CiteScore

3.30

自引率

12.50%

发文量

112

审稿时长

1 months

期刊介绍： Radio Science (RDS) publishes original scientific contributions on radio-frequency electromagnetic-propagation and its applications. Contributions covering measurement, modelling, prediction and forecasting techniques pertinent to fields and waves - including antennas, signals and systems, the terrestrial and space environment and radio propagation problems in radio astronomy - are welcome. Contributions may address propagation through, interaction with, and remote sensing of structures, geophysical media, plasmas, and materials, as well as the application of radio frequency electromagnetic techniques to remote sensing of the Earth and other bodies in the solar system.