CHiPR Research Staff

CHiPR at Stony Brook | CHiPR at Carnegie | CHiPR at UC Davis

Kenneth Baldwin (Senior Technical Associate) Manages the X-ray diffraction and computing facilities including software for the control and operation of the SAM-85 apparatus and other diffraction equipment.

Jiuhua Chen (Research Associate Professor). In-situ monochromatic x-ray diffraction studies with synchrotron radiations. Mechanism and kinetics of phase transitions. Phase equilibrium, crystallography and rheology of minerals at high pressures and temperatures.

Tibor Gasparik (Research Associate Professor). Experimental phase equilibria and sample synthesis in multi-anvil, high-pressure apparatus (USSA-2000)and development of new experimental techniques.

Ivan Getting (Adjunct Research Professor, SUNY; Senior Research Associate, Univ. of Colorado). Materials testing and analysis for design of high-pressure apparatus.

Gabriel Gwanmesia (Adjunct Associate Professor Delaware State University) Synthesis and hot-pressing of polycrystalline aggregates of high-pressure phases of mantle minerals and characterization by optical and electron microscopy and ultrasonic techniques.

Baosheng Li (Research Assistant Professor). In situ ultrasonic measurements of the elasticity of mantle minerals at simultaneous high pressures and temperatures in multi-anvil apparatus.

Robert Liebermann (Distinguished Service Professor). Elasticity of high-pressure phases of mantle minerals Mechanisms and kinetics of phase transformations in silicates at high-pressures and temperatures using X-ray diffraction and electron microscopy. Control and characterization of specimen environment in multi-anvil apparatus.

Donald Lindsley (Distinguished Professor). Pyroxene phase equilibria at high-pressures and temperatures and calibration of various geothermometers and geobarometers.

Hanna Nekvasil (Professor). Thermodynamic modeling of melts and solids integrated with experimental investigations of phase equilibria.

John Parise (Professor). Crystallography and synthetic solid-state chemistry of earth materials, particularly transition metal oxide, and silicate and sulfide framework structures X-ray and neutron diffraction studies at high pressures and temperatures.

Richard Reeder (Professor). Phase transformations in minerals as elucidated by high-temperature X-ray diffraction and transmission electron microscopy surface studies of minerals and analog compounds.

Glenn A. Richard (Educational Coordinator) Develops interactive hands-on instructional tools and programs that focus on the nature of the Earth's interior for use in secondary school science programs and workshops on the use of these tools and programs for teachers.

Michael Vaughan (Research Associate Professor) In situ X-ray diffraction studies using synchrotron radiation at NSLS with multi-anvil, high-pressure apparatus (SAM85). Responsible for apparatus development and training and oversight of internal and external users of the SAM85 apparatus.

Donald J. Weidner (Professor and Director of CHiPR). Equations of state of solids at high pressures and temperatures using in situX-ray diffraction at NSLS and multi-anvil apparatus Brillouin spectroscopy of high-pressure phases as a function of pressure and for temperature.

Jianzhong Zhang (Post-doctoral Fellow, Ph.D., Brooklyn College, CUNY, 1992). Melting of and subsolidus phase equilibria studies in multi-anvil apparatus. In situ X-ray diffraction studies using multi anvil-apparatus.

CHiPR at Carnegie

Nabil Boctor (Research Scientist) Phase equilibria in sulfide type systems; element partitioning between silicate, sulfide, and metal phases; high-pressure phase transitions and shock metamorphic effects in meteorites.

Ronald E. Cohenn(Staff Member) Primary interests are in the study of materials from first principles. He is particularly interested in the properties of materials under extreme conditions of pressure and temperature with applications to problems in geophysics. Also of major interest are the properties and underlying physics of ferroelectrics.

Przemyslaw Dera (Barbara McClintock Fellow) Single-crystal laboratory and synchrotron studies of crystal compression. Hydrous phases and compression of hydrogen bonds. Phase diagrams and compression mechanisms of ices and hydrate clathrates. High pressure phases of silica. Methodology of high pressure XRD experiments with area detector.

Yingwei Fei (Staff Member) Phase equilibria and element partitioning at high pressure and temperature; physical properties of minerals at high pressure and temperature; and chemical compositions and mineralogy of planetary interiors.

Alexandre Goncharov (Senior Research Associate) High-pressure Raman and IR studies of the phase diagram of solid hydrogen and deuterium.

Stephen Gramsch (Postdoctoral Associate) Studies of crystal chemistry at high pressure using crystallographic, spectroscopic, and first-principles electronic structure methods; chemical and physical properties of minerals at lower mantle pressures and temperatures.

Eugene Gregoryanz (Postdoctoral Associate) Optical spectroscopy of molecular crystals in the diamond anvil cell.

Robert M. Hazen (Staff Member) The crystal structures of high pressure mantle phases, especially phases with six-coordinated silicon effects of compositional variation, especially Mg/Fe, on compressibilities and high-pressure structure; high-pressure hydrothermal organic synthesis, prebiotic and abiotic organic synthesis, the possible role of pressure in the origin of life.

Holger Hellwig (Research Associate) Studying the possibilities of nonlinear optics in the field of high-pressure research. Phase transitions and the dynamics of condensed matter are of special interest.

Russell J. Hemley (Staff Member) High-pressure properties of materials.Optical spectroscopy, X-ray diffraction, and diamond-cell techniques. Solid hydrogen.  Applications of high pressure research to geophysics,geochemistry, and planetary sciences. Theoretical condensed-matter physics and chemistry.

Jingzhu Hu (Research Technician) Study of materials pertinent to the Earth and planetary interiors at high pressure and temperatures. In charge of maintenance and operation of superconducting wiggler beam line X17C at the National Synchrotron Light Source.

Jie Li (Postdoctoral Associate) Chemical composition, mineralogy, and physical properties of the Earth's deep mantle and core.

Zhenxian Liu (Postdoctoral Associate) High-pressure synchrotron Infrared, x-ray diffraction and Raman studies of the hydrous phase minerals.

Yanzhang Ma (Postdoctoral Associate) Phase transition and other behaviors of minerals and other materials at high pressure and high temperature.

Ho-kwang Mao (Staff Member) Study of ultrahigh pressure physics, chemistry, materials sciences, geophysics, geochemistry, and planetary sciences using diamond-anvil cell.

Bjorn O. Mysen (Staff Member) Experimental petrology with an emphasis on igneous processes in the crust and the upper mantle. Interests include melting phase relations of mantle materials and element partitioning between minerals, fluids, and melts at high pressures and temperatures.

Reed Patterson (Predoctoral Associate) High pressure synthesis and mechanical characterization of novel superhard materials from nanoscale carbon networks, and electrical studies using designer diamond anvil technology.

Dean C. Presnall (Visiting Investigator) High pressure phase equilibrium studies of model systems bearing on the petrogenesis of igneous rocks and the magmatic evolution of the Earth.

Charles T. Prewitt (Director Emeritus) Crystal chemistry of high-pressure phases containing hydrogen; role of volatiles in mantle evolution and deep-focus earthquakes; synthesis and characterization of new high-pressure phases; experiments using synchrotron radiation.

Anurag Sharma (Postdoctoral Associate) High pressure fluid phase equilibria; Biology in extreme environments; Hydrothermal organic and inorganic reactions associated with prebiotic chemistry.

Jin-fu Shu (Research Technician) Diamond-cell experiments at ultrahigh pressure and high temperature by using conventional X-ray sources (sealed-tube or rotating anode X-ray generator) and synchrotron light source. Single crystal structure analysis and powder X-ray diffraction studies for material properties at conditions of Earth and planetary interiors.

Viktor V. Struzhkin (Senior Research Associate) Developing instrumentation for measurement of magnetic properties at very high pressures.

Oliver Tschauner (Postdoctoral Fellow) Phase transitions and structural analysis of molecular crystals. In particular (a) transitions from molecular to polymeric network structures, (b) order-disorder transitions and glassy states in systems with linked disorder and anisotropic stress (ice), (c) insulator metal transitions in molecular solids.

James A. Van Orman (NSF Postdoctoral Fellow) Rheology of Earth's mantle and core; diffusion in solids and liquids at high pressure and temperature; physical and thermodynamic properties of minerals at high P and T.

Wim van Westrenen (Carnegie Postdoctoral Fellow) Links between crystal-chemistry, compressibility, and mineral-melt trace element partitioning at high pressures and temperatures.

CHiPR at UC Davis

Charles Bennett - Senior Development Engineer.  Is responsible for designing and overseeing the construction of the equipment and for equipment maintenance.

Jihong Cheng - Graduate Student (Materials Science).  Working on perovskites.

Angel Kim - Administrative Assistant

Hiroshi Kojitani - Postdoctoral Research Associate - recently left but still works on CHiPR projects (aluminum in silicate perovskites).

John Neil - Senior Science Researcher and calorimetry lab resource person.

Mirko Schoenitz - recently obtained Ph.D. and left but finishing CHiPR projects (aluminum in silicate perovskites).

Sergey Ushakov - postdoctoral research associate from the V. G. Khlopin Radium Institute, St. Petersburg, Russia.  Working on rare earth phosphates, nuclear waste ceramics, and perovskites.

George Wayrynen - technical staff, Mr. Fix-it

Martin Wilding - Postdoctoral Research Associate - working on UC Davis neutron projects and glass thermodynamics.

Hongwu Xu - postdoctoral research associate from Princeton University.  Working on silicotitanates.

Last modified 11/01/01 by Ann Lattimore, Webmaster

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