Under these conditions, however, it is difficult to measure how materials conduct heat.
To better understand thermal conductivity, researchers from the United States and Sweden placed a thin film of iridium sandwiched between layers of argon in a DAC, subjected it to extreme pressure (50 gigapascals) and then used microsecond laser bursts to heat it to 2,500 degrees K.
The researchers measured the temperature history of the iridium foil and used that data to calculate the thermal conductivity of the argon.
Their results confirmed that one model, kinetic theory, better matched observations than another model, Green-Kubo formalism. These results are important for ongoing studies of how minerals behave in the Earth's mantle and core.TITLE: "Thermal conductivity of argon at high pressures and high temperatures"
Charles E. Blue | EurekAlert!
Magnetic field traces gas and dust swirling around supermassive black hole
22.02.2018 | Royal Astronomical Society
UMass Amherst physicists contribute to dark matter detector success
22.02.2018 | University of Massachusetts at Amherst
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
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Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
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For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
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Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
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