Nano technology now in vogue. Popular mind, ascribes to them a fabulous opportunity to use virtually all spheres, including in the home. Surprisingly, this is not an exaggeration. On the properties of nano particles is still very little known. Their study – the subject of hard work of huge collectives and individual scientists. But on the other hand, I know a lot of “blonde” on the device of internal combustion engine? A car goes …
People, it appears, use the remarkable opportunities nano long, completely unable to understand nature occurring at the same physical processes. Well-known example – Cup of Lycurgus, the fruit of labor the ancient masters, is stored in the British Museum. Even in the IV century, they created a glass piece of art, surprises even our contemporaries. Cup of green, if you cover it from the outside, illuminated from the inside is orange-red. The reason – tiny particles of gold and silver embedded in glass, wrote UBR
The term nanotechnology – is relatively new. He suggested that Japanese physicist Norio Taniguchi only 36 years ago. The prefix nano – means billionth part of something whole. A nanometer is a thousand times smaller than a micron. In Greek blower – dwarf, a dwarf. It is unlikely that the ancient Greeks could suggest what would be called dwarfs that word.
There are two different technological approaches to the creation of nanoparticles: a bottom-up “when the object is collected from the molecules and atoms, as of bricks, and top-down, similar to the work of the sculptor, who is known for creating a masterpiece is enough to” only” trim excess.
First nanoparticle described in 1905 by Albert Einstein, proved in his work that a molecule of sugar has a size of about one nanometer. The DNA molecule in a thousand times more. For nanoparticles tissues and cells of our body – like a leaky sieve, they can penetrate anywhere. This property is used by physicians to diagnose.
For example, a composite of nanoparticles that can be secured in the cancer cells, allows them to detect high concentrations of particles, where dwells a malignant tumor. If passing nanoparticles loaded with medicine, they will deliver it directly to the right place.
Nanotechnology able to protect rights, not only from disease but also from the harmful effects of electromagnetic radiation. The panels, created on the basis of “dwarf” constituents, have an interesting property: the radiation is passed in one direction, and delay in the opposite direction.
Incidentally solved another problem – the protection of information. It is no secret that modern technology makes it easy to restore all the information on your computer screen remotely, on its electromagnetic radiation.
And even on the battlefield, such abilities are indispensable. Enough to hide nanopanelyu military equipment and it will be invisible to radar, which receive the reflected wave.
However – nanoparticles, capable of many things, not a panacea for all ills. Scientists believe that their influence on the body is still too little studied in order to beat the drums and celebrate success. All depends on the specific properties. For example, particles with so-called uncompensated surface bonds are extremely active and can easily destroy the cells of any living organism, causing him irreparable harm.
nanoparticles are so poorly understood that, in fact, science is only at the threshold of great discoveries to come. What awaits us in the future – time will tell. In the meantime, let’s not forget that every coin has two sides.