Plasmonic nanostructures based on the process of interaction between electromagnetic waves and conduction electrons in metals with nano dimensions

Note: plasmonics is based on the process of interaction between electromagnetic waves and conduction electrons in metals with nano dimensions,  is expressed as An analysis is the reason for the rapid drop in the energy of electrons passing through metals, and he concluded that this energy is spent on the cumulative movement and oscillation of the free electrons of the metal and called it plasmon.

The reason for this name was the similarity of these fluctuations of electrons with the fluctuations of particles in the plasma environment. The so-called term polariton is used for the oscillation of bound electrons of a metal in the state of coupling with incident beam phonons. The name polariton was used for quasi-particles that were half matter and half photon, which is the coupled state between a photon of the elementary excitation beam and the conduction electrons of the metal, and the term plasmon polariton (Plasmon Polariton) was used to express the cause of the coupling between a photon and is a plasmon.

According to some classifications, this class of nanostructures is also called nanoparticles. Factors affecting the properties of nanoparticles are the size and type of particles. Nanoparticles can be in different shapes depending on their application, such as spherical, elliptical, cubic, prismatic, Column and... be built. Nanoparticles may consist of one component or a combination of several components. Also, nanoparticles can be pure or a combination of several different materials. The importance of the nano scale is in changing the properties and characteristics of materials in these dimensions. Properties such as electrical conductivity, electromagnetic properties, etc. Starting to change the properties of the material by shrinking it depends above all on the type of material and the desired property. For example, by shrinking the dimensions of a material, generally some of the electromagnetic properties of nano-molecular materials, such as the conductivity of nano particles in materials, are improved. This increase in strength does not happen only in the range of a few nanometers, and the strength of a material of several tens or even hundreds of nanometers may be much more than that of a large-scale bulk material. . On the other hand, the change of some properties such as conductivity in nanotransistors and electromagnetic properties in nanowires may occur in dimensions of only a few nanometers. Plasmon intensification Surface plasmons in structures with nanometer dimensions are called Localized Surface Plasmon Resonance.

Conclusion :

Plasmonic is expressed based on the process of interaction between electromagnetic waves and conduction electrons in metals with nano dimensions,  analytically, the reason The rapid decrease in the energy of electrons in passing through metals, and it was concluded that this energy is spent on the cumulative movement and oscillation of the free electrons of the metal and called it plasmon.