Jung-Fu Lin joined the High Pressure Physics group as a Lawrence Livermore fellow in July, 2005. Jung-Fu’s main area of research interest is to understand the nature of the Earth and planetary interiors from a perspective of mineral physics, mineral chemistry, and high-pressure physics. He uses high-pressure and high-temperature results with seismic observation, geophysical and geochemical constrains, and geodynamic models to clarify and enhance our understanding of the interiors and the Earth and other planets. Jung-Fu is an expert in many high-pressure devices (diamond cell, laser heating, and external heating), Raman spectroscopic system, and synchrotron X-ray spectroscopies (X-ray diffraction, X-ray emission. synchrotron Mossbauer, nuclear resonant inelastic X-ray scattering, and X-ray Raman). In recent years, Jung-Fu has pioneered a number of laser-heated diamond anvil cell techniques to study structural, elastic, electronic, magnetic, thermodynamic, and vibrational properties of planetary materials under extreme conditions. His recent research topics include the phase diagram of hot dense H2O (Lin et al., JCP, 2004; Lin et al., GRL, 2005), sound velocities of iron in the Earth’s core (Lin et al., Science, 2005), light elements in the Earth’s core (Lin et al., Science, 2002), phase transitions in transition metal oxides (Lin et al., Nature Materials, 2004), and electronic spin transition of iron in magnesiowüstite in the Earth’s lower mantle (Lin et al., Nature, 2005). Jung-Fu received his PhD from the Department of Geophysical Sciences, the University of Chicago in 2002. He was a Carnegie Fellow and then a Research Scientist from 07/2002 to 06/2005 at Geophysical Laboratory, Carnegie Institution of Washington. He is a member of American Geophysical Union, American Institute of Physics, Mineralogical Society of America, and Honor Member of Phi Tao Phi Society, Taiwan.