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Technical gazette, Vol. 30 No. 2, 2023.

Original scientific paper

https://doi.org/10.17559/TV-20220717232926

Temperature Distribution and Specific Absorption Rate inside a Child's Eyes from Mobile Phone

Vladimir Stanković orcid id orcid.org/0000-0003-2202-2502 ; University of Niš, Faculty of Occupational Safety, Čarnojevića 10a, 18000 Niš, Serbia
Dejan Jovanović orcid id orcid.org/0000-0002-7159-7196 ; University of Niš, Faculty of Electronic Engineering, A. Medvedeva 14, 18000 Niš, Serbia
Milan Blagojević orcid id orcid.org/0000-0002-0278-7914 ; University of Niš, Faculty of Occupational Safety, Čarnojevića 10a, 18000 Niš, Serbia
Miomir Raos orcid id orcid.org/0000-0001-5586-0276 ; University of Niš, Faculty of Occupational Safety, Čarnojevića 10a, 18000 Niš, Serbia
Anđela Jevtić orcid id orcid.org/0000-0001-6258-9568 ; University of Niš, Faculty of Occupational Safety, Čarnojevića 10a, 18000 Niš, Serbia

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Abstract

This paper represents the numerical analysis of Specific Absorption Rate (SAR) and temperature distribution within the eyes of realistic child head model exposed to mobile phone radiation at the frequency of 4G. The SAR and temperature distribution are obtained by numerical solutions of the equation of electromagnetic wave propagation as well as the bioheat equation. The values of SAR and temperature distribution are shown for different biological tissues of the eyes during exposure to electromagnetic radiation from a mobile phone. As electromagnetic properties of tissues depend on the electromagnetic waves' frequency, the value of SAR and temperature will be different for different tissues. For the purpose of this research, a realistic 3D model of a child's head has been created. Maximum absorption of electromagnetic energy occurs in the surface layers of the child head model, whereby this value exceeds the maximum allowed limits. This is the case when the radiation source is positioned closest to the head model. An increase in temperature was observed in the biological tissues and organs closest to the radiation source, i.e. the mobile phone. As the distance between the mobile phone and the child head increases, the temperature decreases, but slower than the SAR values.

Keywords

biological tissue; mobile phone; numerical models; specific absorption rate; temperature change

Hrčak ID:

294402

URI

https://hrcak.srce.hr/294402

Publication date:

26.2.2023.

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