Metallic nanoparticles are tiny particles made of metals, typically ranging from 1 to 100 nanometers in size. Due to their small size, they exhibit unique physical and chemical properties that differ from bulk metals. These properties make them useful in various applications, including electronics, medicine, and environmental science. Common metals used to create these nanoparticles include gold, silver, and copper. In medicine, metallic nanoparticles can be used for targeted drug delivery and imaging. In electronics, they enhance the performance of devices, while in environmental applications, they can help in detecting pollutants or purifying water.