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Visiting Investigators

Dina Bower
Visiting Investigator
E-mail: dbower@ciw.edu
Phone: 202-478-8992

Dina Bower’s research is centered on finding and establishing reliable biosignatures in ancient rocks on Earth and other planets. She attempts to understand the role of microbes in the diagenesis of Fe-Ti-oxides by undertaking experiments that simulate diagenetic conditions. Currently, she is studying ~1.9 Ga Gunflint chert samples collected from four different sites of the Gunflint Formation.

 

Russell J. Hemley
Visitng Investigator
E-mail: rhemley@ciw.edu

Russell J. Hemley is a visiting investigator at the Geophysical Laboratory. His research examines the properties of materials at high-pressures and its applications to geophysics, geochemistry and planetary science, as well as to theoretical condensed-matter physics and chemistry. He uses optical spectroscopy, x-ray diffraction, and diamond-cell techniques to conduct high-pressure experimental and theoretical studies in condensed-matter physics, earth and planetary science and materials science. He obtained a Ph.D. and M.A. in physical chemistry from Harvard University in 1983 and 1980, and received a B.A. in chemistry and philosophy from Wesleyan University in 1977.

 

Nicholas Holtgrewe
Visiting Investigator
E-mail: nholtgrewe@ciw.edu
Phone: 202-478-8944

Nicholas Holtgrewe is a visiting investigator from Howard University.  He is working with Alexander Goncharov on laser optics in Raman pump-probe experiments.  His other research interests include superconductors, solar power and laser optics.  

 

Mingqiang Hou
Visiting Investigator
E-mail: mhou@ciw.edu
Phone: 202-478-4566

Mingqiang Hou is a postdoctoral associate working with Yingwei Fei. His research includes observing Earth's core composition by using static and dynamic experiments and upgrading heating techniques in diamond anvil cells. Mingqiang received his Ph.D. from Beijing Institute of Space Environment Engineering.

 

Tomasz Jaron
Visiting Investigator
E-mail: tjaron@uw.edu.pl

Tomasz Jaron is a visiting investigator from the University of Warsaw. He is working with Viktor Struzhkin on high-pressure synthesis and physicochemical properties of novel hydrides of ytterbium and cobalt.

 

Lei Kang
Visiting Investigator
E-mail: chinayaomeng@hotmail.com

Lei Kang joins us as a visiting predoctoral associate from Jilin University in China. He is working with Viktor Struzhkin on researching high-temperature superconductors under high-pressure conditions, such as two-dimensional materials.

 

Lingping Kong
Visiting Invetigator
E-mail: lkong@ciw.edu
Phone: 630-252-2888

Lingping (Lisa) Kong is from the Harbin Institute of Technology in China. She carries out x-ray diffraction experiments at the High Pressure Synergetic Consortium (HPSynC) facility of the GL.

 

Jabrane Labidi
Visiting Investigator
E-mail: jlabidi@ciw.edu

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.

 

Gang Liu
Visiting Investigator

Gang Liu will be working with Dave Mao as Visiting Investigator.  He completed his Ph.D. in Materials Science at the Harbin Institute of Technology. He is an experienced APS User and worked at NSLS, ALS and for Materials Science Research. His research also centers on the properties of ferroelectrics under various external fields.

 

Irena Mamajanov
Visiting Investigator
E-mail: imamajanov@ciw.edu

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.

 

Subhasish Mandal
Visiting Investigator
E-mail: smandal@ciw.edu
Phone: 202-478-8945

Subhasish is studying Fe-based superconducting materials through first principles simulations using DFT+DMFT. His research focuses on understanding these newly-found superconductors both in the presence and absence of pressure. Subhasish received his PhD from the department of Physics, Michigan Technological University in summer 2012. He obtained his M.Sc in Physics from Indian Institute of Technology Madras in 2007 and B.Sc degree with Physics Honors from the University of Calcutta (India) in 2005. He can be found in room R106.

 

Stewart McWilliams
Visiting Investigator
E-mail: smcwilliams@ciw.edu

Stewart McWilliams is a shock-wave researcher educated at the University of California Berkeley and at Lawrence Livermore National Laboratory. He is working as a postdoc at Howard University studying high-pressure materials chemistry, transport properties, and equations of state with ultra-fast heating and measurement techniques in the diamond-anvil cell.

 

Jinfu Shu
Visiting Investigator
E-mail: jshu@ciw.edu
Phone: 202-478-8963

Jinfu Shu's research interests are in high pressure synchrotron x-ray single crystal studies, diamond inclusions, and micromineral studies. Jinfu earned his Ph.D. at Wuhan College of Geology in China in 1987.

 

Xiaowei Sun
Visiting Investigator
E-mail: sunxw_lzjtu@163.com

Xiaowei Sun is working with Alexander Goncharov as a visiting investigator. He is working on the predictions of high-pressure phase behavior including elastic optical melting and thermodynamic properties of the new potentially superhard materials from the aspects of theory and computer simulation, if possible combined with experimental design. He joins the Geophysical Laboratory from Lanzhou Jiaotong University and is also interested on the theoretical studies on properties of materials under extreme conditions of pressure and temperature.

 

Mark Wasley
Visiting Investigator
E-mail: m.d.wasley@gmail.com

Mark Wasley joins the Geophysical Laboratory as a visitor from the University of Houston. He works with George Cody on various projects and is interested in genetics, gene editing/engineering and genetic sequencing.

 

Todd Zapata
Visiting Investigator
E-mail: todd-austin-zapata@neo.tamu.edu
Phone: 202-478-7963

Todd Zapata joins the Geophysical Laboratory as a visiting investigator from Texas A&M University.  He is researching materials under high pressure using diamond anvil cells with Viktor Struzhkin.

 

Qiaoshi Zeng
Visiting Investigator
E-mail: qzeng@ciw.edu

Qiaoshi(Charles) Zeng is a Visiting Investigator at HPSynC. His research interest is focused on understanding the structure and properties of amorphous materials and new materials synthesis by developing and utilizing various high pressure techniques including x-ray diffraction, imaging and spectroscopy etc. He received his PhD in materials science and engineering from Zhejiang University, China in 2010.

 

Xiao-Miao Zhao
Visiting Investigator
E-mail: xzhao@carnegiescience.edu
Phone: 202-478-8907

Xiamiao Zhao joins the Geophysical Laboratory from South China University of Technology as a visitor working with Alex Goncharov and Viktor Struzhkin. She is working on polycyclic hydrocarbons in connection with their possible superconducting properties, which will include structural determination, optical and resistivity measurements. You can find her in office R242.