Beautiful first measured substance sixth state viscosity

According to the American physicist organizational network recently reported that the use of laser control the number of American scientists over frozen atoms, and by measuring the Fermi gas (generally considered to be the sixth state of matter) of the viscosity. The results show that the Fermi gas can be used as a "scale model" to measure ultra-high-temperature superconductors, neutron stars, the nuclear material, or even a few microseconds after the Big Bang quark - gluon plasma and other material properties, is expected to be used string theory to the test in the laboratory. Study published in the December 10 issue of "Science" magazine.
John Thomas, a physicist at Duke University team measured the lithium -6 ultracold atomic Fermi gas with viscosity. They will capture the lithium atoms in a few millimeters -6 size basin made by the laser, when the cooling and magnetic field exposure in the right size, these atoms will have a strong interaction. Thomas said that the very strong interaction between the Fermi gas show "amazing attributes", such as almost no friction to flow like a liquid and so on.
In the ultra-cold environment, the nature of the Fermi gas by a scale - the average distance between atoms to decide. Under the laws of quantum physics, this distance will determine all other natural scale, such as energy, temperature and viscosity scale, etc., which makes this ultra-cold Fermi gas can be measured other substances "scale model . " Thomas has proven before, the gas temperature can be measured the properties of the scale, but this is the first time scientists have tested with its viscosity.
Thomas first minus 459 degrees Fahrenheit (about minus 273 degrees Celsius) measured the viscosity of the gas. Turn off the gas collector limit, and then re-enable their capture radius of this Fermi gas began to swing. Swing the longer the duration, the lower viscosity. The temperature a little, Thomas began to observe when it is released from the catcher came out, cigar-shaped Fermi gas into a pancake from how fast. The results show that shape changes more slowly, the higher the viscosity.