_ Department of  nanoelectronics and (plasmonic waves)

The connection between nanoelectronics and plasmonic waves  is a process based on electrical, optical, magnetic, and surface properties .

Researcher  and author: Dr.   (   Afshin Rashid)

Note: These nanostructures consist of metal and dielectric, whose dimensions are below the excitation wavelength (the wavelength of the radiation that causes the excitation of plasmonic waves).

With the approach of technology towards the accumulation of opto-electronic circuits, manufacturing problems and phenomena that helped prevent further compression of the structure, caused the use of plasmonic structures and plasmonic waves to be investigated and used.  Plasmonic is based on the process of interaction between electromagnetic waves and conduction electrons in metals with nano dimensions. Analytically, the reason for the rapid drop in the energy of electrons 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. 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.





The division of this nascent science into two areas of localized surface plasmons and surface polariton plasmons is briefly introduced. In localized surface plasmons, the basis of interactions is nanoparticles, whose properties have been investigated in stimulating this mode of plasmonic waves. In surface plasmon polaritons, with the introduction of their working foundation, there is its field formulation and how these structures cross the diffraction limit. Nanostructures have fundamental differences both in terms of synthesis and production, and in terms of properties and applications. In general, the electrical, optical, magnetic, surface, etc. properties of these three structures are fundamentally different from each other, and of course their applications are also different. One-dimensional nanostructures can be used for electronic connections, while there is no such application for zero-dimensional and two-dimensional nanomaterials. The main basis of nanotechnology is the use of materials. Every material in space has three dimensions: length, width and height. If in a material at least one of these three dimensions is in the range of nanometers, it is called a material, a nanostructure.


Conclusion :

With the approach of technology towards the accumulation of opto-electronic circuits, manufacturing problems and phenomena that helped prevent further compression of the structure, caused the use of plasmonic structures and plasmonic waves to be investigated and used. These nanostructures consist of metal and dielectric, whose dimensions are below the excitation wavelength (the wavelength of the radiation that causes the excitation of plasmonic waves).

Researcher  and author: Dr.   (   Afshin Rashid)

Specialized doctorate in nano-microelectronics