Yu-chen Karen Chen-Wiegart

Joint Appointment

Prof. Chen-Wiegart is an Assistant Professor at the Department of Materials Science and Chemical Engineering in Stony Brook University (SBU). She also holds a Joint Appointment with National Synchrotron Light Source – II (NSLS-II) at Brookhaven National Laboratory (BNL), coordinating the effort of multi-modal research approach. She holds a Ph.D. degree in Materials Science and Engineering from Northwestern University. Prof. Chen-Wiegart emphasizes on applying state-of-the-art x-ray imaging and spectroscopic techniques to study novel functional materials. Her current interests include energy storage and conversion, nano-/meso-porous materials, thin film & surface treatment, and cultural heritage.
Before joining Stony Brook University, she served as beamline scientist at the Sub-Micron Resolution X-ray Spectroscopy (SRX) Beamline of NSLS-II. Prior to that she was a postdoctoral fellow at the National Synchrotron Light Source at BNL, where she participated in the commissioning of the new high-resolution x-ray transmission microscope and in establishing the new associated research program. Her PhD research focused on the study of the dealloying and coarsening behaviors of nanoporous metal which has numerous potential applications, co-funded by Advanced Photon Source, Argonne National Laboratory. While continuing to develop cutting-edge x-ray tools, she is exploring new opportunities in functional materials. She has also been active in out-reach programs at NSLS-II and SBU, organizing events such as “Bring Our Children to Work Day” for the Photon Sciences Division at BNL, volunteering for educational and outreach events, and teaching courses in Women in Science & Engineering program at SBU.

Phone: 344-3563
Email: ycchen@bnl.gov


  • Ph.D. 2011: Materials Science and Engineering, Northwestern University
  • B.S. 2007: Materials Science and Engineering, National Taiwan University

Key Publications

  • H Jiang, K Chou, S Petrash, G Williams, J Thieme, D Nykypanchuk, L Li, A Muto, Y Chen-Wiegart, Environmentally Induced Chemical and Morphological Heterogeneity of Zinc Oxide Thin Films, Appl. Phys. Lett.(109), 091909 (2016).
  • Y Chen-Wiegart, K Kennouche, J Scott Cronin, S Barnett, J Wang, Effect of Ni Content on the Morphological Evolution of Ni-YSZ Solid Oxide Fuel Cell Electrodes, Appl. Phys. Lett., 108, 083903 (2016).
  • L Li, Y Chen-Wiegart, J Wang, P Gao, Q Ding, Y Yu, F Wang, J Cabana, J Wang, S Jin, Visualization of Electrochemically Driven Solid-state Phase Transformations Using Operando Hard X-ray Spectro-imaging, Nat. Commun., 6, 6883 (2015).
  • J Wang, Y Chen-Wiegart, J Wang, In Situ Three-Dimensional Synchrotron X-Ray Nanotomography of the (De)lithiation Processes in Tin Anodes, Angew. Chem. Int. Ed., 126(17), 4549-4553 (2014).
  • Y Chen-Wiegart, S Wang, Y Chu, W Liu, I McNulty, P Voorhees, D Dunand, Structural Evolution of Nanoporous Gold During Thermal Coarsening, Acta Mater., 60, 4972-4981 (2012).

All Publications