From the very title it follows that the nanoworld begins with a size of one billionth of a meter, since the prefix nano means ten in the minus of the ninth degree.
The human eye can not see objects of the nanoworld, their observation became possible only in 1931, when the electron microscope was invented.
Nanotechnologies have become fashionable, they are talked about andPlace, and out of place. "Nanos" is translated from Greek as a dwarf, hence, nanoworld is a dwarf world. That is why it is appropriate to say a nanoparticle, that is, a dwarf particle, but nanoenergetics or nanofluid are senseless definitions, since there is no dwarf energy or dwarf liquid.
Also, do not talk about nanotechnology, whenWe are talking about intra-atomic interaction and chemical technologies. Here they operate with even smaller dimensions and measure everything in Angstroms - 10 minus the tenth degree.
Nanoobjects are often mixed with objects fromMicrocosm, that is, objects, one of the sizes of which exceeds 100 nm. The technology of using such objects can not be called nanotechnology, since then it will turn out that manipulation with soot is already nanotechnology, because its particle size is slightly more than 100 nm.
Correctly apply the definition of "nanoworld" and"Nanoobject" only to structures that are larger than 1 nanometer in any direction and more than a few tens of nanometers, in only one direction. Such objects include various molecular clusters - astralenes, nanotubes, fullerenes, fullerides and complex molecules, for example, DNA.
The size of nanoworld objects can be represented ifLook at ordinary human hair. Its average diameter is 0.05 mm, it is about sixty thousand times larger than the size of an ordinary nanoworld object.
The depth of tracks on an ordinary CD-ROM is 100 nanometers, their width is 500 nanometers.
Nanometers are used when talking about the wavelength of visible light. The human eye distinguishes waves from 380 to 760 nanometers in length.
Modern semiconductors contain elements of dimensions of 14 nanometers.
If 10 hydrogen atoms are arranged in a straight line one after another, then the length of such a chain will be approximately 1 nanometer.