A study on EMI shielding effectiveness of graphene based structures

Following the rapid development of technology, various electrical and electronic devices have been a great part of life day by day due to make human life easier and comfortable. However, they emit electromagnetic radiations causing the electromagnetic pollution. Depending on this role, electromagnetic pollution becomes a crucial problem for humanity, environment, and negatively effected the performance of electronic devices because of the electromagnetic interference. In order to prevent the unwanted signals, we have produced a graphene based polymer composites (light weight, strong, flexible), graphene/wood-plastic (G/WP), as a shielding material and investigated its electromagnetic interference shielding effectiveness (EMI SE). Four combination of G/WP is observed with different (% 0, % 3, % 6, % 9 wt) graphene rates in 8-9 GHz frequency range. As a result, the shielding success has been attributed to the graphene increase in composite. The results claim that G/WP composites can efficiently take place in electronics technology and electronic protection.

I. Introduction

Nowadays, electrical or electronic devices have been used in many areas of the daily life and become serious needs for human beings. The extensive use of these technological devices causes electromagnetic pollution which negatively effects the biological life and the performance of the electronics [1]. Therefore, electromagnetic shielding is needed to reduce the unwanted effects of electromagnetic radiation emitted by these electronic systems. That is, electromagnetic interference shielding is necessary to provide the electronics operate in electromagnetic compatibility and to prevent the harmful effects for the living things. The examples for the occurrence of electromagnetic radiation can be given as communication network, TV and computers, medical devices, radars, electric motors, transformers. That much extensive network requires electromagnetic shielding in critical demand for a safety life and quality operation of electronics. To overcome this issue, much focus has been given to the electromagnetic shielding materials in order to shield these devices which causes to the electromagnetic radiation [2]–[3].