What are nanoparticles?

The

nanoparticles is an ultra-fine particle with at least one dimension between 1-100 nanometers (nm). One nanometer equals one billion meter. The lower size limit helps to distinguish particles from random clusters of atoms. The upper limit is the largest in which the differences in size related to size normally manifest.

This definition is widely accepted, although it is a bit arbitrary. There are published links to nanoparticles in sizes outside the range of 1-100 nm. What such particles are interested in scientists are unique material properties that sometimes result from their size. When particles show such properties, they will probably be considered nanoparticles, even if they are not exactly not suitable for a defined range of size.

It is not necessarily the case that the nanoparticles show the differences of properties from larger instances of the same material. If this happens, ownership differences may be caused by quantum effects. It is also true that in nanoparticles have material particles relatively largersurface surface compared to their volume. A proportionally larger exposed surface can make nanoparticles much more chemically active. This may be another cause of their unexpected properties.

The quantum dot is a semiconductor nanoparticles of about 1-20 nm in diameter. Its structure is basically the same as larger semiconductors. However, the electronic properties that show can vary very much. These properties are the result of a quantum size effect. When the physical size approaches the wavelength of the electron, the relationship between voltage and conductivity may be different from larger standards.

gold and silver are relatively inert in large quantities. On the nanoparticle, however, show unique catalytic properties. For example, silver nanoparticles are an effective antibiotic. Nanoparticles have been golden to be effective in removing volatile organic compounds from the atmosphere, even at temperaturethe rooms.

Nanotechnology deals with the use of the unique properties of these ultra -fine particles for engineering systems that operate on molecular or atomic levels. Particular features have potential in computer technology, medicine and environmental engineering. They can also consist of building blocks for complex equipment for microscopic levels.

were expressed concern about the exposure of a person's nanoparticles. Animal research has shown that some types of nanoparticles can achieve brain and other organs when inhaled. Inflammation and fibrosis in the lungs were also reported. However, the explosion and fire in the workplace proved to be the principles of these particles.