chemists have calculated that chains of doubly and triply bonded carbon atoms are stronger than any other material.
The sixth chemical element in the periodic table is amazingly flexible. Was known previously only simple carbon, graphite and diamond, buckyballs and carbon nanotubes are now also produced a large number of exotic materials such as graphene.
But still, carbon may surprise you as to researchers at Liu Mingjie show at Rice University in Houston. You have the physical properties of another form of carbon is calculated, which is to be stronger and more solid than any other material. The carbon offshoot called Carbyne and consists of a chain of carbon atoms, either of alternating triple – is structured and single bonds or double bonds continuedCarbyne is not yet a real mystery.. Astronomers believe they have discovered his signature in interstellar space, but on earth chemist trying for decades to the artificial production of the material. A few years ago a first Carbyne chain with 44 atoms was formed in a solution
Until now it was thought that Carbyne would be extremely unstable. Enough to bring two strands contact each other to an explosive reaction trigger. Nevertheless, nano researchers are intrigued by the potential of the material. Liu and team succeeded for the first time to calculate how strong and solid Carbyne actually is.
So it should be twice as strong as the strongest materials known to date. Carbon nanotubes, and graphene achieve is 4.5 x 10 ^ 8 Nm / kg, while Carbyne 10 ^ to obtain 9 Nm / kg. When strength it looks equally impressive. Liu and Co. calculated that it takes about ten nano newtons to break a single strand. “This force can be converted 7 Nm / kg to a specific thickness of 6.0 to 7.5 x 10 ^ what graph (4.7 to 5.5 times 10 ^ 7 Nm / kg), carbon nanotube (4.3 to 5 , 0 x 10 ^ 7 Nm / kg) and diamond (2.5 to 6.5 x 10 ^ 7 Nm / kg) exceeded. “Carbyne has other interesting properties. Its flexibility is located between a typical polymer and double-stranded DNA. Upon rotation, it rotates freely rotating or rigid, depending on the chemical group to tie up.
Perhaps most interesting, however, is the actual stability of Carbyne. The research team believes that two strings can indeed react with each other on contact, but there is a barrier activity. The make sure that the material in condensed form survives for several days at room temperature. All this makes the mouth watery nano technicians, all new applications are still possible up to spintronics. Now would only succeed in making reliable. <- AUTHOR MARKER DATA BEGIN -> ( TR online ) / <- RSPEAK_STOP -> (bsc)<- RSPEAK_START -> <- AUTHOR DATA MARKER END ->
<- googleoff: all ->
