The Oxidation–Reduction Thermal Process of Synthesis of Graphene Nano-platelets via Microwave Irradiation

This study describes the development of an electrically adjustable microstrip attenuator using graphene nano-platelets (GNPs) that can be irradiated with microwaves. The attenuator operates within a frequency range of 1–8 GHz. The research is centered on utilizing raw graphite, which comprises mall carbon particles ranging from nanometers to a few micrometers, and exploring the concept of intercalated compounds. The investigation involves examining the chemical properties of graphene and modeling its electromagnetic behavior at microwave frequencies. The attenuator incorporates a graphene patch that exhibits increased conductivity at higher DC voltages (reaching 15 V) and possesses remarkable strength despite being a thin sheet. Key features of the structure include the peak associated with reduced graphene oxide and the crystalline structure’s graphitic arrangement. Through analysis, it has been determined that GNPs exhibit exceptional sustainability and durability.