High pressure-temperature research in mineral physics, focusing on the equation-of-state, structure and phase transformations in minerals, with emphasis on hydrous mantle phases, deploying the state-of-the-art techniques: in-situ synchrotron X-ray diffration, Raman and Brillouin scattering, electrical resistivity, employing multi-anvil apparatus and  laser-heated diamond-anvil cell technologies.  Other studies related to the physics and chemistry of the Earth’s interior focused on the elastic/anelastic properties of mantle rocks, elastic properties and structure of hydrous and anhydrous silicate glasses and melts, and core-related  Fe-rich melts, and inclusions in diamonds.

Awards:
Fellow of the American Ceramic Society
Fellow of the American Geophysical Union
Fellow of the Mineralogical Society of America
Life Fellow of the Indian Geophysical Union
Guggenheim Fellowship Award for synchrotron radiation research at high pressure/temperature