Nanoparticles (silica) have new properties, kinetics and unusual biological activity (PhD in nano-microelectronics)

Researcher  and author: Dr.   (   Afshin Rashid)



Note: The  size of silica particles below 300 nanometers is called nano-silica. The size of silica above this amount is called sub-macron (sub-micron). Nanosilica has been considered due to the increased mechanical strength of composite resins.

Nanosilica  nanotubes  have great potential for a variety of diagnostic and general industrial applications. Unlike crystalline micron-sized silicate itself, relatively little information is available on the toxicity of amorphous shapes and its nanoparticle size. Because nanoparticles have unusual properties, kinetics, and unusual biological activity, their potential biological effects may vary greatly from micron-sized bulk materials. Particle size affects the strength and smoothness of the surface, and most studies use a range of 5 to 200 nm. The amount of surface transparency is also directly related to the particle size. Particle sizes of more than 100 nm scatter visible light and reduce transparency. Also, the high specific surface area of ​​nanoparticles creates high surface energy and effective suspension of silica nanoparticles in aqueous and non-aqueous solutions. 



It should be noted that silica particles in their chemical nature can not be dissolved in aqueous solvents and many conventional non-aqueous solvents, and this feature of permanent suspension of nanosilica particles is considered in many industrial applications. Nano  -crystal silicon dioxide (SiO  2  ) is widely used in the field of nano-electronics and nano-bio-chip biomedical devices such as drug delivery and gene therapy has been used. Nanosilica particles have found their place in composite materials in many basins, including drug delivery systems, catalysts, biotherapy, biopsy, dyeing, sensors, liquid armor, and as fillers.


Conclusion : 

Nanosilica  nanotubes  have great potential for a variety of diagnostic and general industrial applications. Unlike crystalline micron-sized silicate itself, relatively little information is available on the toxicity of amorphous shapes and its nanoparticle size. 

Researcher  and author: Dr.   (   Afshin Rashid)

PhD in Nano-Microelectronics