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Articles

Evaluation of SAR in a human head with glasses exposed to radiation of a mobile phone

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Pages 1919-1930 | Received 02 May 2013, Accepted 19 Jul 2013, Published online: 13 Aug 2013
 

Abstract

In this paper, we evaluate specific absorption rates (SAR) in a human head exposed to radiation of a mobile phone at two frequencies of Global System for Mobile (GSM) Communications, when people do and don’t wear glasses. The simulation includes phone call and internet surfing states. Since the eyes are sensitive to electromagnetic radiation, we focus on the maximal SAR in eyes. Based on finite-difference time-domain (FDTD) calculation method, we find that wearing glasses obviously alters the distribution of SAR and may increase SAR. The maximal SAR in eyes with glasses is even eight times more than that without glasses. The maximal SAR is more sensitive to the frame of glasses than the spectacle lens. In all, wearing glasses may possibly induce higher risk of the health hazard to eyes exposed to the radiation of a mobile phone. The results could offer valuable results for designing glasses to reduce SAR in eyes.

Acknowledgment

This project is supported by the National Science Foundation of China under Grant No. 60871064.

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