👉 Plasmons are particles that have a finite size and can exist in multiple states of matter at the same time. These particles are responsible for creating a distinctive characteristic in the electrical properties of materials, such as conductivity, insensitivity to electric fields, and resistance to magnetic fields. Plasmons also play a crucial role in the formation of quantum dots, which are nano-sized structures made up of plasmon-filled material that can be used as sensors or memory devices.