- Graphene: Known for its excellent electrical conductivity and mechanical strength, graphene is used to create highly efficient conductive pathways. - Carbon Nanotubes (CNTs): These cylindrical nanostructures offer remarkable electrical and thermal properties, making them ideal for interconnects and transistors. - Nanoparticles: Metallic nanoparticles, such as silver and copper, enhance the conductivity and solderability of PCBs. - Quantum Dots: Used in optoelectronic applications, quantum dots improve the functionality of PCBs in devices like LEDs and displays.