Design of miniaturized double-negative material for specific absorption rate reduction in human head

Mohammad Rashed Iqbal Faruque; Mohammad Tariqul Islam

doi:10.1371/journal.pone.0109947

Design of miniaturized double-negative material for specific absorption rate reduction in human head

PLoS One. 2014 Oct 28;9(10):e109947. doi: 10.1371/journal.pone.0109947. eCollection 2014.

Authors

Mohammad Rashed Iqbal Faruque¹, Mohammad Tariqul Islam¹

Affiliation

¹ Centre for Space Science (ANGKASA), Research Centre Building, Universiti Kebangsaan Malaysia, UKM, Bangi, Selangor D. E., Malaysia.

Abstract

In this study, a double-negative triangular metamaterial (TMM) structure, which exhibits a resounding electric response at microwave frequency, was developed by etching two concentric triangular rings of conducting materials. A finite-difference time-domain method in conjunction with the lossy-Drude model was used in this study. Simulations were performed using the CST Microwave Studio. The specific absorption rate (SAR) reduction technique is discussed, and the effects of the position of attachment, the distance, and the size of the metamaterials on the SAR reduction are explored. The performance of the double-negative TMMs in cellular phones was also measured in the cheek and the tilted positions using the COMOSAR system. The TMMs achieved a 52.28% reduction for the 10 g SAR. These results provide a guideline to determine the triangular design of metamaterials with the maximum SAR reducing effect for a mobile phone.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Algorithms
Humans
Models, Theoretical*
Reproducibility of Results

Grants and funding

This work was supported by the Universiti Kebangsaan Malaysia, under grants Dana Lonjakan Penerbitan (UKM- DLP-2014). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.