110 GHz broadband measurement of permittivity on human epidermis using 1 mm coaxial probe

In this work, we have characterized the permittivity of human epidermis (outer skin layer) using microwave up to 110 GHz. A one mm-diameter coaxial probe was adopted to increase measuring bandwidth as well as to enhance the spatial resolution. Pork was used to discriminate the permittivities between...

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Bibliographic Details
Published inIEEE MTT-S International Microwave Symposium Digest, 2003 Vol. 1; pp. 399 - 402 vol.1
Main Authors Hyeonseok Hwang, Jounghwa Yim, Jei-Won Cho, Changyul Cheon, Youngwoo Kwon
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Bandwidth
Coaxial components
Epidermis
Humans
Muscles
Permittivity measurement
Probes
Skin
Spatial resolution
Wrist
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Summary:In this work, we have characterized the permittivity of human epidermis (outer skin layer) using microwave up to 110 GHz. A one mm-diameter coaxial probe was adopted to increase measuring bandwidth as well as to enhance the spatial resolution. Pork was used to discriminate the permittivities between muscle tissues and fat tissues. The influence of the sample thickness was also. studied. Considering several factors, the permittivity was measured on epidermis of the human palm and the wrist. In addition, a relaxation phenomenon observed in the wrist skin, revealed by Cole-Cole parameters, suggested that it originated from high water content beneath the thin epidermis of the wrist skin. A relaxation phenomenon revealed by Cole-Cole parameters was observed in the wrist skin. This explains that high water content cells exist beneath the thin epidermis of the wrist skin.
ISBN:9780780376953
0780376951
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2003.1210961