Development and Characterization of RGO Ink for Microwave Absorber based Stealth Application

Abstract

This research paper presents a method for synthesizing reduced graphene oxide (rGO) ink and investigates its morphological behavior based on sonication time. This study also explores the experimental verification of rGO's functionality as a tunable attenuator operating in the 1-8 GHz range. The synthesis process consists of three phases: synthesis of graphene oxide (GO), reduction of GO to rGO, and dispersion of rGO powder in a solvent. A comparative analysis of morphological and functional behavior is conducted by varying sonication time using X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), and Energy Dispersive Spectroscopy (EDS). Results indicate that increased sonication time enhances the quality of multi-layered graphene, resulting in finer stacked layers and improved electrical properties. Also, measuring insertion loss at different biased voltages shows that r-GO ink can be used as a microwave tunable attenuator. This study provides valuable insights into the synthesis and characterization of rGO ink, highlighting its potential applications in the field of microwave electronics.