Testing the physics of heat conduction using high pressure: crystals ...

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$Diffraction$

II. Do optical phonons contribute to heatconduction or scatter acoustic phonons?• Leibfried-Schlömann equation– acoustic phonons dominant heatcarriers– three phonon anharmonic scatteringbetween acoustic modes controlsphonon mean-free-pathfV1/33D2TV molecular volume = Debye frequency Gruneisen parameter• Test using relative low modulus water ice thatis compressed by 33% at P=22 GPa.
Water ice has a remarkably rich phase diagramPetrenko and Whitworth (1999)
Page 3: Thermal conductivity and interface
Page 9: Maximum pressure achieved in therma
Page 12 and 13: Test the applicability of the model
Page 14 and 15: Nanoscale polymer brushes “grafte
Page 18 and 19: Ice VII, cubic with two interpenetr
Page 20 and 21: Measuring thermal conductivity of w
Page 22 and 23: Good agreement with LS equation ove
Page 24 and 25: Interface stiffness s is analogous
Page 26 and 27: Clean SiC anvil at high temperature
Page 28: Summary• Pressure dependence of P

Testing the physics of heat conduction using high pressure: crystals ...

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