Change structure in nanostructures Nano Structure to acquire new nanoelectronic devices and tools (PhD in Nano-Microelectronics)
Researcher and author: Dr. ( Afshin Rashid)
Note: All atoms in nanostructures have a certain amount of energy at any temperature due to their oscillations. The amplitude of this oscillation is not the same in all atoms of nanostructures . On the contrary, surface atoms have more amplitude of oscillation due to the greater freedom of space they have. In this way, the strange behavior of solids in reducing their melting temperature can be explained.
When the average amplitude of atomic vibrations reaches a certain coefficient of the constant value of the nanostructures network , these vibrations can no longer increase without damaging and destroying the nanoparticle network. Therefore, by increasing the average amplitude of vibrations to greater values, the nanostructures are removed from the crystal lattice mold and melt. Surface atoms have higher average oscillations, and if the number of surface atoms increases, they can have a clear effect on the average amplitude of the total oscillations of the material atoms. Therefore, as the dimensions of nanostructures shrink to the extent that the ratio of the number of surface atoms to the number of volume atoms reaches a significant value, the average amplitude of nanomolecular oscillations will increase significantly; Under these conditions, with increasing surface instability of the material, the nano melting temperature Nanostructures Nano Structure will be reduced.
In the change (structure) of nanostructures Nano Structure One of the natural thermal phenomena due to the shrinkage of the material structure is the thermal instability of nanoparticles. As you know, (heat has energy E), which - 03 - its energy is proportional to the ambient temperature. This energy is equal to KBT. In this relation KB is the Boltermann constant and a constant value equal to and T is the temperature in Kelvin. Therefore, when nanostructures are placed in different environments, electrons are given energy (-0.01 * 0 / 33JK) due to heat. Now consider a property of a particle that generally depends on (nanoparticle volume V). The energy of this property is U and a function of V. When the volume is small enough that the KBT is larger than U, then the condition will be thermally unstable.An important feature of all nanostructures is summarized in that the number of atoms (surface) in them is greater than the number of atoms (volume). This ratio increases with decreasing size (nanoparticles). Therefore, the size of the nanoparticle is an important feature. The shapes and sizes of nanostructures are naturally determined by their composition and formation conditions. The properties of nanostructures, in turn, determine the originality of the properties of nanostructures and the possible contexts of their operation . The range of 1 to 1000nm is introduced as the range of nanostructures, an important feature of nanostructures is the control of the organization's own processes. The range of change in nanostructure activity depends on the nature and shape of the nanostructure. With However, if the energy field of nano-energy electromagnetic radiation is comparable if certain range Wavelength changes dramatically with the occurrence of chemical reactions in irradiated materials. The activity of nanoparticles will be significant up to 100 nm.
Conclusion :
All atoms in nanomaterials at any temperature have a certain amount of energy due to their fluctuations. The amplitude of this oscillation is not the same in all nanomaterial atoms. On the contrary, surface atoms have more amplitude of oscillation due to the greater freedom of space they have. In this way, the strange behavior of solids in reducing their melting temperature can be explained.
Researcher and author: Dr. ( Afshin Rashid)
PhD in Nano-Microelectronics