Investigating Thermal Conductivity in Graphene Nanocomposites

Abstract

in natural occurrences, two carbon isotopes maintain stability: carbon-12, which accounts for roughly 99% of all naturally found carbon, and carbon-13, constituting approximately 1%. These proportional distributions are also observed in laboratory-produced graphene. Graphene, a single layer composed of sp2-bonded atoms arranged in a hexagonal pattern with a bond length of0.142 nm, exhibits outstanding characteristics such as a high tensile strength of about 130 GPA and exceptional electrical conductivity, holding promise for advancements in battery efficiency. I synthesized graphene using microwave irradiation techniques applied to graphite raw powder. The synthesized of graphene deposited onto two metallic strips measuring 1 mm in dimensions. The incorporation of copper enhances graphene's conductivity and facilitates precise tuning at higher frequencies. The experimental findings presented in this study investigate the adjustable nature of the transmission coefficient (transmitting from port 1 to port 2) within the graphene patch. These findings demonstrate fluctuations of -20 dB at 1.7 GHz, -23 dB at both 2 GHz and 7 GHz, and -24 dB at 8 GHz, achieved through a simultaneous increase in DC bias voltage exceeding the saturation threshold.