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Applications of Effective Medium Theories in the Terahertz Regime
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In this chapter a short introduction into a selection of quasi static effective medium theories was presented. Their potential and restrictions were illuminated by a choice of representative application scenarios ranging from polymeric compounds to biological samples. However, the relatively long wavelengths of the terahertz waves enables for a wide applicability within this frequency range without the necessity of including volumetric scattering effects in the calculations. Therefore, an accurate analytical modelling of various problems can be achieved utilizing such EMTs. The Table 2 gives a short overview of exemplary application scenarios and the EMTs of choice. Application Scenario Mixtures with high contrast in permittivity, spherical particles Mixtures with high contrast in permittivity, ellipsoidal particles Mixtures with low contrast in permittivity, irregular or unknown shaped particles Mixtures of powders, porous pellets Mixtures consisting of isotropic components EMT of choice EB EB, PvS LLL, CRI LLL, CRI EB, PvS
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“Examples of common EMTs include Maxwell-Garnett, which typically assumes spherical inclusions and works well for low-to-moderate inclusion concentrations, and Bruggeman, which is often preferred for higher concentrations or more symmetric mixtures [49, 55, 64, 65].”
From Tutorial: Accurate Determination of Refractive Index and Absorption Coefficient in Terahertz Time-Domain Spectroscopy (2025) · cites this paper as [64]
In the citing paper
“Examples of common EMTs include Maxwell-Garnett, which typically assumes spherical inclusions and works well for low-to-moderate inclusion concentrations, and Bruggeman, which is often preferred for higher concentrations or more symmetric mixtures [49, 55, 64, 65].”
From Tutorial: Accurate Determination of Refractive Index and Absorption Coefficient in Terahertz Time-Domain Spectroscopy (2025) · cites this paper as [64]
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Metadata
- Authors
- Scheller, M., Jansen, C., & Koch, M.
- Affiliations
- Technische Universität Braunschweig (DE)
- Corresponding author
- Scheller, Maik
- Venue
- Recent Optical and Photonic Technologies
- Publisher
- InTech
- Published
- 2010-01-01
- DOI
- 10.5772/6915
- OpenAlex
- W4211170309
- Cited by
- 37
- References
- 25
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 4 · 2023: 1 · 2022: 3 · 2021: 6 · 2020: 6 · 2019: 5 · 2018: 1 · 2017: 2 · 2015: 3 · 2014: 2 · 2013: 1
- FWCI
- 1.31
- Type
- book chapter
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by-nc-sa
- Locations
- InTech eBooks (publishedVersion, cc-by-nc-sa)
- BiblioBoard Library Catalog (Open Research Library) (submittedVersion, cc-by-sa)
- IntechOpen (submittedVersion, cc-by-nc-sa)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
- Physical Sciences › Engineering › Mechanics of Materials › Composite Material Mechanics
- Keywords
- effective medium theory, terahertz radiation, permittivity contrast, spherical particles, ellipsoidal particles, irregular particles, porous pellets, powder materials, polymer blends, biological specimen, analytical modelling, effective permittivity
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