Saturday, January 28, 2017

In the end, managed to get metallic hydrogen Onet.pl

Hydrogen is the simplest element in the universe, has only one proton and circled by one electron. Everywhere is full, typically in the form of gas, but is part of a huge number of chemical compounds, e.g., water. Now scientists from Harvard University the arms of the hydrogen between the two diamonds, the ends of which had a section smaller than the diameter of a human hair.

In 1935, Eugene Wigner and Hillard bell Huntington predicted, that under a pressure of 25 gigapaskali (GPa) hydrogen can turn into solid metal. However, obtaining such a high pressure, was then impossible. Over the years it has turned out, however, that it should be much higher – between 400 and 500 GPA. However, the pressure inside the Earth, millions of times higher than atmospheric, the design is a 360 gigapaskali.

now Only the conversion of hydrogen in the metal was made by Isaac Silvera and Rank Diaz from Harvard University, using 495 gigapaskali pressure and temperature of 5.5 degrees above absolute zero. Managed through the use of two synthetic diamonds, between which spłaszczonymi vertices placed a sample of hydrogen. To prevent breakage of diamonds, their tops were carefully polished, and all the internal stress is removed (warming up). The area of the rhombus was also covered with a layer of aluminum oxide (Al203), through which hydrogen cannot penetrate.

At low temperature, at relatively low pressures, hardens hydrogen was transparent, but with increasing emphasis began to become opaque and black. And when the pressure exceeded 495 GPA, the hydrogen became metallic shiny – that pointed to the fact that there are free electrons and become metal (although the led experiment is not sure whether the metal is liquid or in the solid state).

according to scientists, metallic hydrogen can be nadprzewodnictwo at room temperature, but once produced would be stable and under normal pressure. Can therefore find application in the transmission of electricity without loss, high-speed computers, as well as rocket fuel of what we currently know.

(JaS)

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