_ Department of nano- fullerence
Detailed investigation (nanoparticle size and electronic conduction characteristics) in nanofullerenes
Researcher and author: Dr. ( Afshin Rashid)
Note: The important feature of all nanostructures is that the number of surface atoms in them is more than the number of volume atoms. This ratio increases with decreasing nanoparticle size. Therefore, the size of the nanoparticle is considered its most important feature.
The range of activity of nanoparticles depends on the nature and shape of the nanostructure. However , if the energy of the nanoparticle field is comparable to the energy of electromagnetic radiation and if significant changes are made in a certain wavelength range with the occurrence of chemical reactions in the irradiated materials, the activity of nanoparticles up to 100nm will be significant. The surface atoms of nanoparticles are not compensated in terms of energy. In general, the results of nanoparticle energy growth can be expressed as the total energy of atoms on the surface of the particle.
The freedom of movement of atoms on the surface of nanostructures is limited and only vibrational movements and the movement of electrons are possible. These two electrokinetic reactions are dependent on each other because the displacement of electron clouds of atoms definitely changes the vibrational frequencies of the bonds of atoms of nanoparticles . On the other hand, changing the location of valence electrons in the bonds changes the polarity of the bond and the bodies known as supermolecules . In this case, electron transfer to a higher energy level becomes possible. In this sense, carbon nanotubes (CNTs) are the most interesting investigated species. In this, the carbon nanotubes that protect them from the environment interact, and for this reason, these CNTs nanotubes are called metal/carbon nanotubes.
Fullerenes are identified according to the number of atoms in their structure. A letter C is used to name fullerenes, which represents the carbon atom in their structure. After the letter C, the number of carbon atoms in the fullerene spherical lattice unit is mentioned. For example, C60 molecule has 60 carbon atoms. The number of atoms in fullerenes produced so far ranges from 28 to hundreds of carbon atoms.
Conclusion :
The important feature of all nanostructures is that the number of surface atoms in them is more than the number of volume atoms. This ratio increases with decreasing nanoparticle size. Therefore, the size of the nanoparticle is considered its most important feature.
- Researcher and author: Dr. ( Afshin Rashid)
Specialized doctorate in nano-microelectronics