Experimental Characterization of Biological Tissue Dielectric Properties through THz Time-Domain Spectroscopy
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866910048093995008 |
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| author | Marini, Elisabetta Mura, Silvia Hernandez, Marco Hamalainen, Matti Magarini, Maurizio |
| author_facet | Marini, Elisabetta Mura, Silvia Hernandez, Marco Hamalainen, Matti Magarini, Maurizio |
| contents | Terahertz (THz) radiation provides a non-ionizing, highly sensitive probe of the dielectric properties of biological tissues. In this study, we present a comprehensive experimental characterization of dielectric properties using pork skin tissue, a widely used surrogate for human tissue, as a biological sample. Measurements are conducted employing THz time-domain spectroscopy in the 0.1-11 THz frequency range with photoconductive antennas for both signal generation and detection. Frequency-dependent refractive indices, absorption, and complex permittivity are extracted from transmitted time-domain signals. Our results confirm strong absorption and low transmittance at low THz frequencies due to water content, while highlighting frequency-dependent dispersion and narrowband transmission features at higher frequencies. This work provides one of the first extended-frequency datasets of biological tissue dielectric properties, supporting realistic channel modeling for the design and development of intra-body nanosensor networks in the THz band. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_09807 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Experimental Characterization of Biological Tissue Dielectric Properties through THz Time-Domain Spectroscopy Marini, Elisabetta Mura, Silvia Hernandez, Marco Hamalainen, Matti Magarini, Maurizio Optics Emerging Technologies Systems and Control Terahertz (THz) radiation provides a non-ionizing, highly sensitive probe of the dielectric properties of biological tissues. In this study, we present a comprehensive experimental characterization of dielectric properties using pork skin tissue, a widely used surrogate for human tissue, as a biological sample. Measurements are conducted employing THz time-domain spectroscopy in the 0.1-11 THz frequency range with photoconductive antennas for both signal generation and detection. Frequency-dependent refractive indices, absorption, and complex permittivity are extracted from transmitted time-domain signals. Our results confirm strong absorption and low transmittance at low THz frequencies due to water content, while highlighting frequency-dependent dispersion and narrowband transmission features at higher frequencies. This work provides one of the first extended-frequency datasets of biological tissue dielectric properties, supporting realistic channel modeling for the design and development of intra-body nanosensor networks in the THz band. |
| title | Experimental Characterization of Biological Tissue Dielectric Properties through THz Time-Domain Spectroscopy |
| topic | Optics Emerging Technologies Systems and Control |
| url | https://arxiv.org/abs/2603.09807 |