Choe Research Lab

We are an interdisciplinary team, working on state-of-the-art ultrafast dynamics methods. We have a strong focus on developing a novel, integrated experimental strategies for ultrafast dynamics in condensed matter.

 

Projects

Time-resolved x-ray crystallography

Understanding the structural dynamics of solids under external perturbation is important since sensitivity to an external perturbation is regarded as either physical and/or chemical properties of crystals. The development of novel experimental methods that cover multiple time scales (from pico- to micro-seconds) allows for selective identification of the specific changes on each time scale and their influence on the materials.

We focus on the development of the state-of-the-art time-resolved x-ray diffraction methods allowing for a better understanding of the dynamical processes in crystalline materials and providing new insights for the design of advanced materials.

  • Femtosecond x-ray diffraction
  • Stroboscopic time-resolved x-ray diffraction

3D Bragg ptychography

Knowledge of the materials structure and composition at the nanoscale is essential for understanding their physical, chemical, or electronic properties.

We dedicate to Bragg ptychography, a synchrotron based coherent diffraction imaging method we focus on. Bragg ptychography opens access to characterize the crystalline materials with 3D high-resolution imaging methods.

  • Biomineral mesoscale structure
  • Domain dynamics in ferroelectrics
  • Development of data acquisition schemes

 

Current Researchers

We are always interested in motivated students and postdocs who want to join the group!

SURI, McNair, Bachelor and Mater Thesis Projects are available - With us you can learn and apply novel techniques of Bragg ptychography & Time-resolved x-ray crystallography.

Please contact Dr. Choe with interest: hchoe@bowiestate.edu