Prasad, Jagdees Choi, Yong -Woo Nam, Myeong Gyun Moon, Myoung-Woon Yoo, Pil J. 2024-07-18T05:30:08Z 2024-07-18T05:30:08Z 2024-07-18 2024-09 0925-8388 https://pubs.kist.re.kr/handle/201004/150249 Addressing the growing need for electromagnetic interference (EMI) shielding in GHz devices, this study presents a novel bimetallic Au-Ag@MoS2-rGO nanohybrid developed via hydrothermal and chemical processes. This work marks the first exploration of their dielectric properties and EMI shielding effectiveness. The composite, featuring uniformly dispersed Au-Ag alloy nanoparticles on MoS2-rGO nanosheets, significantly outperforms MoS2 and MoS2-rGO in EMI shielding, achieving over 38.1 dB in the X-band frequency range and blocking nearly 99.99% of electromagnetic power. This improvement is credited to the enhanced interfacial interactions, increased microwave absorption sites, and the formation of three-dimensional conductive bridges, boosting electrical conductivity and charge mobility. This efficient electromagnetic energy dissipation through a synergistic blend of conduction loss, polarization, and internal reflections suggests the potential for these advanced conductive metal-based materials in microwave absorbers and shielding applications. English Elsevier BV Enhanced dielectric properties and electromagnetic interference shielding effectiveness of 3D hierarchical nanohybrid of Au-Ag@MoS2-rGO Article 10.1016/j.jallcom.2024.175016 1 Journal of Alloys and Compounds, v.999 Journal of Alloys and Compounds 999 N scie scopus 001263831500001 2-s2.0-85195283413 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article REDUCED GRAPHENE OXIDE MICROWAVE-ABSORPTION CARBON NANOSTRUCTURES MAGNETIC-GRAPHENE PERFORMANCE NANOCOMPOSITE MOS2 NANOPARTICLES LIGHTWEIGHT COMPOSITE Heterostructures Nanohybrid Dielectric properties EMI shielding effectiveness