Experimentation for establishing a harmless mobile phone using graphene

<p>Subir Kumar Sarkar</p>

Experimentation for establishing a harmless mobile phone using graphene

Subir Kumar Sarkar

University of Calcutta, India

: J Chem Appl Chem Eng

Abstract

The electromagnetic radiations from mobile phones have detrimental effects on the human body. These radiations cause the heating of essential body fluids resulting in de-hydration of brain cells. This paper focuses on exploring different materials that can effectively reduce electromagnetic interference from mobile phones. The shielding material can be used to externally paint mobile flip-covers in order to reduce the effects of harmful electromagnetic radiations on mobile phone users. The presence of the protective shielding material on the mobile cover does not significantly reduce the audibility of the ringtone during incoming calls. The signal is not attenuated during calls as the user can uncover the screen while conversing. In this paper, the High Frequency Structure Simulator (HFSS) software has been used to study the attenuation of electromagnetic signals resulting from a composite material comprising of Graphene-Mumetal-PANI. The simulation results justify the shielding effectiveness of carbon-like compounds such as graphene oxide (GO), Reduced graphene oxide (rGo), Carbon, graphite; conducting polymers like PANI, and metals like iron, copper and nickel (components of Mumetal) and validated by experimentation as shown in. The bar chart in shows the normalized sound level in dB for all the materials The Sound Meter app, EMP Meter app and Magnetic field Magnetometer app are precalibrated Android applications that have been used for the purpose of measurement. The measurement was carried out in three modes, stand-by mode, call incoming mode and call outgoing mode with respect to the reference cellphone. The sound, EMI and magnetic field readings were then tabulated. The sound measured for the case of no shielding is 82dB and the lowest recorded level is 53dB for Iron(Fe)- nickel(Ni)-Copper(Cu)-Charcoal-Polyaniline (PANI) composite.