Print this page Geophysical Laboratory on Facebook Geophysical Laboratory on Flickr Click for RSS

Visiting Investigators

Shengqi Chu
Visiting Investigator

He is a visiting scholar from the Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China. He has been working at the Beijing Synchrotron Radiation Facility since 2011. His research focuses on the X-ray Absorption Spectroscopy measurements on materials.  Shengqi will be at HPCAT for one year.

 

Katherine Crispin
Visiting Investigator
E-mail: kcrispin@ciw.edu
Phone: 202-478-8986

Katherine maintains the (FIB-FESEM) Focused Ion Beam Field Emission Scanning Electron Microscope and also assists users on the SEM and Microprobe. She researches new techniques and applications involving the microbeam instruments and collaborates on research involving pallasite meteorites. She is a Director of the MicroAnalysis Society, and an Associate Editor of American Mineralogist. Her previous research was focused on diffusion in lower mantle minerals where she investigated the effect of crystal field stabilization energy on diffusion rates of transition metals in periclase. She received a Ph.D. in Geological Sciences from Case Western Reserve University and a B.S. in Chemistry from Cedar Crest College.

 

Teresa Fornaro
Visiting Investigator
E-mail: teresa.fornaro@sns.it

Teresa Fornaro is a visiting investigator from the Scuola Normale Superiore of Pisa, who will be on campus for a four month tenure. She will be studying interactions of nucleotides adsorbed onto brucite with Bob Hazen and Dimitri Sverjensky as part of her Ph.D. thesis.

 

Matthieu Galvez
Visiting Investigator
E-mail: mgalvez@ciw.edu
Phone: 202-478-8987

Matthieu Galvez joins the geophysical laboratory as a new Carnegie Fellow from the Institut de Physique du Globe de Paris, France. He studies the dynamics of carbon in metamorphic nodes with George Cody. R133

 

Jihua Hao
Visiting Investigator
E-mail: jhao3@jhu.edu
Phone: 202-478-8967

Jihua Hao is a predoctoral associate from Johns Hopkins University. Jihua is working with Dimitri Sverjensky and Cecile Feuillie on the origin of life. He is also very interested in mineral surface geochemistry.

 

Valerie Hillgren
Visiting Investigator
E-mail: vhillgren@ciw.edu
Phone: 202-478-8927

Valerie is an experimental geochemist with a B.S. in Geology from the University of Kansas and a Ph.D. in Planetary Science from the University of Arizona. She has studied a variety of problems ranging from the formation and composition of the cores of Earth, the Moon, and Mercury to the fractionation of stable Si and Fe isotopes between metal and silicates. Most of her experimental work is conducted at high pressures and temperatures using the piston cylinder apparatus, the multianvil apparatus, and the laser-heated diamond cell. Currently, she is working with Dr. Anat Shahar on the fractionation of Fe isotopes in Pallasite meteorites.

 

Nicholas Holtgrewe
Visiting Investigator
E-mail: nholtgrewe@ciw.edu
Phone: 202-478-2375

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.  

 

Fang Huang
Visiting Investigator
E-mail: fhuang9@jhu.edu

Fang Huang is a predoctoral associate from Johns Hopkins University. He is working with Yingwei Fei on high pressure and temperature experiments.

 

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.

 

Ronit Kessel
Visiting Investigator
E-mail: rkessel@carnegiescience.edu
Phone: 202-478-8926

Ronit Kessel is a visiting investigator from Hebrew University of Jerusalem, Israel, where she is a senior lecturer. She is working with Yingwei Fei and will conduct element partitioning experiments at high pressure and temperature, and investigate the role of carbon in the Earth's interior.

 

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.

 

Qian Li
Visiting Investigator
E-mail: QianLi@hpcat.aps.anl.gov

Qian Li is a visiting graduate student at HPCAT from Jilin University. She is working with Yue Meng on diffraction studies for her predoctoral studies.

 

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.

 

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.

 

Caitlin Murphy
Visiting Investigator
E-mail: cmurphy@ciw.edu
Phone: 202-478-2373

Caitlin Murphy joins us as a new Carnegie Fellow working with Yingwei Fei and Russell Hemley. She is interested in understanding how defects and impurities influence the structural, vibrational, and electronic properties of materials at high pressures. Her postdoctoral research will focus on experimentally probing the effects of composition, pressure, and temperature on the transport properties of mantle and core materials using diamond anvil cells and advanced radiation sources. Caitlin received a B.S. in Earth, Atmospheric and Planetary Sciences from MIT in 2007, and a Ph.D. in Geophysics from Caltech in 2012. Presently, she occupies a desk in R-133

 

Haiyun (Kevin) Shu
Visiting Investigator
E-mail: hshu@ciw.edu
Phone: 202-478-8875

Kevin has been working at GL as a lab technician since 2005 and he covers the gravy yard shift between 9pm - 9am. His duties include the maintenance and operation of microwave plasma CVD systems, iron wheel polishing machines, and preparation of diamond samples for various experiments.

 

Verena Starke
Visiting Investigator
E-mail: vstarke@ciw.edu
Phone: 202-478-8994

Verena Starke is a molecular biologist and microbial ecologist specializing in environmental microbiology. She developed a strong background in these fields during her masters’ research at the Philipps-University Marburg (Germany), and her Ph.D. dissertation at the University of Maryland (USA). Her main research interests lie in microbial ecology under changing environmental conditions. Particularly, she is interested in how microbial communities change along environmental gradients, and how the environment influences microbial community makeup.

 

Dimitri Sverjensky
Senior Visiting Investigator
E-mail: dsverjensky@ciw.edu
Phone: 202-478-7975

Dimitri Sverjensky is a Professor of Geochemistry in the Department of Earth and Planetary Sciences at the Johns Hopkins University. Professor Sverjensky received his B. Sc. degree with First Class Honors from the University of Sydney (Australia) in 1973 and a Ph.D. from Yale University in 1980. He has worked in the fields of economic geology, isotope geochemistry and theoretical aqueous solution chemistry. In recent years, his research has focused on integrating theoretical and experimental studies of the geochemistry of the mineral-water interface, mainly with applications to environmental geochemistry and to the role of surface chemistry in the origin of life. He has been a Visiting Investigator since 2005.

 

Todd Zapata
Visiting Investigator

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.

 

Xiao-Miao Zhao
Visiting Investigator
E-mail: xzhao@carnegiescience.edu

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 A-G28A until the end of August.