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Postdoctoral Fellows & Associates

Ligang Bai
Postdoctoral Associate
E-mail: lbai@ciw.edu

Ligang Bai is a postdoctoral associate at the Geophysical Laboratory's HPCAT facility. He is working in part with the University of Las Vegas' Department of Physics and Astronomy.

 

Neil Bennett
Postdoctoral Fellow
E-mail: nbennett@ciw.edu
Phone: 202-478-4895

Neil Bennett is a postdoctoral fellow at the Geophysical Laboratory, who hails from the University of Toronto. He is working with Yingwei Fei to determine element behavior during planetary core formation. This work utilizes high pressure and temperature experiments in the multi-anvil press and diamond anvil cells, coupled with sample characterization by laser-ablation mass spectrometry and electron beam micro analysis (FIB, SEM, EPMA).

 

Venkata Srinu Bhadram
Postdoctoral Associate
E-mail: vbhadram@ciw.edu
Phone: 202-478-8938

Venkata (Venkat) Bhadram is a postdoctoral associate working with Tim Strobel and Russell Hemley on EFree projects, mainly in the area of solar energy materials. He is also working on developing novel materials for photocatalytic water splitting. The work involves synthesis with both multi-anvil and diamond cell techniques, as well as characterization using Raman spectroscopy and laboratory and synchrotron x-ray facilities. Previously, Venkat was a visiting investigator at Purdue University, after receiving his Ph.D. from JNCASR, Bangalore, India.

 

Stephen Elardo
Postdoctoral Associate
E-mail: selardo@ciw.edu
Phone: 202-478-8479

Stephen Elardo is a postdoctoral associate hailing from the Institute of Meteoritics at the University of New Mexico. He is working with Anat Shahar on understanding iron isotope fractionation at high pressure and temperature during planetary differentiation as a way to infer the abundances of light elements in planetary cores. His research interests also include igneous processes in the planetary settings, with an emphasis on the differentiation of the Moon, early crust building processes in the lunar crust, and the thermal and magmatic evolution of the lunar mantle.

 

Cécile Feuillie
Postdoctoral Associate
E-mail: cfeuillie@ciw.edu
Phone: 202-478-8969

Cécile Feuillie is a postdoctoral associate working with Dimitri Sverjensky and Robert Hazen. She is conducting experimental research on the interactions between organic molecules and mineral surfaces, mainly in the context of the origins of Life. She received her Ph.D. in geosciences from the ENS de LYON in september 2012.

 

Zachary Geballe
Postdoctoral Fellow
E-mail: zgeballe@ciw.edu
Phone: 202-478-2373

Zachary (Zack) Geballe is a postdoctoral fellow working with Viktor Struzhkin. His focus is to develop high-frequency calorimetry methods and to use them to measure heat capacities of metals and silicates at high pressures in order to study melting, pre-melting phenomena, and the glass transition. Zack received his Ph.D. from the University of California, Berkeley.

 

Hitoshi Gomi
Postdoctoral Associate
E-mail: hgomi@carnegiescience.edu
Phone: 202-478-1090

Hitoshi Gomi is a postdoctoral associate working with Yingwei Fei. His research focuses on determining the electrical resistivity of core materials at high pressure and temperature with applications to core dynamics and thermal evolution. Hitoshi received his Ph.D. from Tokyo Tech.

 

Huiyang Gou
Postdoctoral Associate
E-mail: hgou@ciw.edu
Phone: 202-478-4889

Huiyang Gou is a postdoctoral associate working with Tim Strobel on the synthesis of new materials and carbides. He received his Ph.D. from BGI, University Bayreuth.

 

Binyang Hou
Postdoctoral Associate
E-mail: byhou@carnegiescience.edu

Binyang Hou is a postdoctoral associate working at HPCAT under the supervision of Dr. Changyong Park. He received his Ph.D. from the University of Illinois at Chicago. His research has been focused on the study of molecular level interfacial structure using various synchrotron x-ray radiation methods as well as electrochemical techniques. His current research focuses on the study of solid-fluid interfaces under ambient as well as high pressure and temperature conditions.

 

Ross Hrubiak
Postdoctoral Associate
E-mail: rhrubiak@ciw.edu

Ross Hrubiak is a postdoctoral associate at HPCAT working on high-pressure melting studies. Ross received his Ph.D. from Florida International University’s Center for the Study of Matter at Extreme Conditions (CeSMEC).

 

Qingyang Hu
Predoctoral Associate
E-mail: qhu@ciw.edu
Phone: 202-478-8933

Qinyang Hu is a graduate student from George Mason University.  He joins the Geophysical Lab as a predoctoral associate working with Dave Mao on the theory part of the FeO project and diamond anvil cell experiments of cerium.

 

Daniel Hummer
Postdoctoral Associate
E-mail: dhummer@ciw.edu
Phone: 202-478-8908

Daniel Hummer completed his Ph.D. at Penn State University specializing in mineralogy and crystallography. He is interested in the phase stability of minerals at high pressures and temperatures, and the kinetics of nucleation and crystal growth processes. He is currently working with Yingwei Fei to examine the behavior of ferric iron and other cations in the structure of magnesium silicate perovskite, and its impact on mantle properties.

 

Colin Jackson
Postdoctoral Fellow
E-mail: cjackson@ciw.edu

Colin Jackson is a postdoctoral fellow at the Geophysical Laboratory. He is working with Yingwei Fei, and many other members of the staff, on high-pressure and temperature experiments, and solid Earth geochemistry. Colin received his Ph.D. from Brown University.

 

Cheng Ji
Postdoctoral Associate
E-mail: cji@ciw.edu

Cheng Ji is a postdoctoral associate at HPSynC. He recieved his Ph.D. in Mechanical Engineering from Texas Tech University. His research interests include phase transitions of materials under large shear stress at high pressures and high pressure related synchrotron x-ray techniques.

 

Jabrane Labidi
Postdoctoral Fellow
E-mail: jlabidi@ciw.edu
Phone: 202-478-7974

Jabrane Labidi is a postdoctoral fellow working with Anat Shahar on multiple isotope composition of sulfur in organic matter of chondrites.  His other research interests include magmatic geochemistry, mantle geochemistry, volatiles in the planetary interiors, and cosmochemistry. Jabrane received his Ph.D. from the Institut de Physique du Globe de Paris.

 

Charles Le Losq
Postdoctoral Fellow
E-mail: closq@ciw.edu
Phone: 202-478-8993

Charles Le Losq is a postdoctoral fellow at the Geophysical Laboratory. He works with Bjorn Mysen and George Cody on the interactions between volatile elements and silicate glasses and melts in order to better understand how volatiles can affect the physical properties of molten rocks, and hence, the dynamic of volcanic phenomena. Charles received a Ph.D. in Geophysics from the Institut de Physique du Globe de Paris / University of Paris VII - Denis Diderot in 2012, and a Master degree in Geology and Natural Hazards from the Institut de Physique du Globe de Paris in 2009.

 

Bing Li
Postdoctoral Associate
E-mail: bli@ciw.edu

Bing Li is a postdoctoral associate at HPSynC. He received his Ph.D. in condensed matter physics from Jilin University in 2011. Bing is working on diamond anvil cell techniques for ultra-high pressure experiment and selected element phase transitions at mega-bar pressures using synchrotron micro-Xray diffraction with Dave Mao and others in the high-pressure team.

 

Kuo Li
Postdoctoral Associate
E-mail: kli@ciw.edu

Kuo Li graduated from the College of Chemistry and Molecular Engineering, Peking University, PR China, in 2011. He majored in inorganic solid state chemistry and material chemistry, and worked on the synthesis of novel complex metal oxides and the crystal structure determination ab-initio with powder diffraction patterns (X-ray, neutron and electron). He is now studying the evolution of pyrochlore compounds under high pressure and the synthesis of novel metal oxides under high pressure. He is also examining the characterization of crystal structures under high pressure with synchrotron X-ray and neutron diffraction. Presently, he is stationed at HPSynC at APS and participates in research conducted at SNAP, SNS, Oakridge.

 

Yangzheng Lin
Postdoctoral Associate
E-mail: ylin@ciw.edu
Phone: 202-478-2374

Yangzheng Lin is a postdoctoral associate from Penn State University, where he worked on molecular dynamics (MD) and kinetic Monte Carlo (KMC) simulations for GaAs surface reconstruction and diffusion. He is now working with Ronald Cohen and Tim Strobel on the equation of state (EOS) and phase transition for MgSiO3, FeSiO3, and CO2+H2O systems from quantum Monte Carlo (QMC) simulations as well as ground state crystal structure prediction for lithium carbide and new carbon structure prediction based on first principle density functional theory (DFT) computations under ambient and high pressures. RG31

 

Chao Liu
Postdoctoral Associate
E-mail: cliu@carnegiescience.edu
Phone: 202-478-8908

 

Hanyu Liu
Postdoctoral Associate
E-mail: haliu@carnegiescience.edu

Hanyu Liu is a postdoctoral associate working with Russell Hemley. He is carrying out theoretical and computational studies in support of current EFree projects and also contributing to the development of a new project focusing on hydrogen-rich materials. Hanyu is also interested in studying the properties of materials at extreme conditions using molecular dynamics and crystal structure predictions.

 

Irena Mamajanov
Postdoctoral Associate
E-mail: imamajanov@ciw.edu
Phone: 202-478-8916

Dr. Irena Mamajanov joins GL as a postdoctoral associate from Georgia Tech.  She will be working with George Cody on the characterization of hyperbranched polyesters as potential enzyme precursors using solid state NMR.  Her other research interests include solid-state NMR, origin of life and astrobiology.  You can find her in office R-147.

 

Takaki Muramatsu
Postdoctoral Associate
E-mail: tmuramatsu@ciw.edu
Phone: 202-478-4595

Takaki's research focuses on strongly correlated electron systems under high pressure and low temperature. He hopes to expand the pressure range of electrical conductivity and magnetic measurements.

 

Andrew Needham
Postdoctoral Associate
E-mail: aneedham@ciw.edu

Andy specializes in coordinated analyses of the mineralogy, chemistry and isotopic composition of planetary materials. His research at the Geophysical Laboratory, working with Andrew Steele, involves the reaction pathways of carbon in the Martian crust and mantle. Andy also continues research into the formation and evolution of the early solar system through collaborations with NASA-JSC, from where he joins the Geophysical Laboratory.

 

Ileana Perez-Rodriguez
Postdoctoral Fellow
E-mail: ileperez@ciw.edu
Phone: 202-478-2372

Ileana Pérez-Rodríguez received her Ph.D. in microbial ecology from Rutgers, The State University of New Jersey. She is working with Dionysis Foustoukos on the bioenergetics (metabolic rates and growth efficiencies) of anaerobic, chemosynthetic microbes from deep-sea hydrothermal vents. These studies, performed both with laboratory pure cultures and environmental hydrothermal vent fluid samples, include the exploration of temperature/pressure effects on deep-sea vent microbial phylogenetic distributions and activities.

 

Corliss Kin I Sio
Postdoctoral Fellow
E-mail: ksio@carnegiescience.edu
Phone: 202-478-1078

Corliss Kin I Sio joins the Geophysical Laboratory as a postdoctoral fellow from the University of Chicago. She is working with Anat Shahar on olivine growth rates in basaltic melts. Corliss is also interested in isotope geochemistry and experimental petrology. R-233

 

Fuhai Su
Postdoctoral Associate

Fuhai Su is a new Postdoctoral Associate from the Institute of Solid State Physics, PR China. He is carrying out experiments on materials fabrication at high pressures as well as ultrafast optics in collaboration with Alex Goncharov.

 

Hiroyuki Takenaka
Postdoctoral Associate
E-mail: htakenaka@ciw.edu
Phone: 202-478-2371

Hiroyuki (Hiro) Takenaka joins the Geophysical Laboratory as a postdoctoral associate working with Ronald Cohen on theoretical investigations on transducers. Hiro is also interested in finding new electro-mechanical transducers with improved properties. Hiro received a Ph.D. of mechanical engineering at the School of Science and Engineering, Meiji University in 2006. Prior to joining the Geophysical Laboratory, Hiro was a postdoctoral fellow for Professor Andrew M. Rappe, University of Pennsylvania. His focus was the origin of anomalous physical properties in relaxor ferroelectrics and bulk photovoltaic effect in oxide, oxy-­‐sulfide, sulfide compounds.

 

Rajasekarakumar Vadapoo
Postdoctoral Associate
E-mail: rvadapoo@carnegiescience.edu
Phone: 202-478-7977

Rajasekarakumar Vadapoo joins the Geophysical Laboratory as a postdoctoral associate from Spintec, CEA/CNRS in Grenoble, France. He is working with Ron Cohen to use first-priciple computations to synthesize, modify, and manipulate piezoelectrics, and then use chemical pressure to design epitaxial heterostructures that stabilize the materials with enhanced properties at ambient conditions. R133

 

Junyue Wang
Postdoctoral Associate
E-mail: jywang@ciw.edu
Phone: 202-478-8987

Junyue Wang is a postdoctoral associate at HPSynC. He works on synchrotron based nano resolution x-ray microscopy and computerized tomography, and their applications in high pressure research. He received a Ph.D. in 2009 from the Institute of Physics at Academia Sinica in Taiwan, China.

 

Qianqian Wang
Postdoctoral Associate
E-mail: qwang@carnegiescience.edu
Phone: 202-478-8934

 

Liuxiang Yang
GL-HPSTAR Postdoctoral Associate
E-mail: lyang@ciw.edu
Phone: 202-478-8988

Liuxiang Yang is a postdoctoral associate from the Chinese Academy of Sciences. He works with Reinhard Boehler and others on the melting of transition metals and noble gases.

 

Jianjun Ying
Postdoctoral Associate
E-mail: jying@ciw.edu
Phone: 202-478-8992

Jianjun Ying joins us this week as a postdoctoral associate from the University of Science and Technology of China.  He will be working on synthesizing superconducting materials and measuring their physical properties with Xiaojia Chen and Viktor Struzhkin.  

 

Haidong Zhang
Postdoctoral Associate
E-mail: hzhang@ciw.edu
Phone: 202-478-8919

Haidong Zhang joins the Geophysical Laboratory as a postdoctoral associate from the University of Florida. He works on novel materials with Timothy Strobel, aiming to discover new materials with outstanding properties, which can be synthesized under extreme conditions such as high pressure and high temperature. RG31.

 

Peng Zhang
Postdoctoral Associate
E-mail: pezhang@ciw.edu
Phone: 202-478-8915

Peng Zhang joins the Geophysical Laboratory from Louisiana State University as a postdoctoral associate. Peng is working with Ronald Cohen as a computational physicist in numerical simulations of minerals in which strong correlations are important. Using numerical methods, the calculated properties of minerals will be compared with experiment results, in order to provide explanations of the experiment discoveries and built precise and reliable theoretical models. He is also interested in developing new numerical methods in model and mineral simulations. His office is located at R-106.