SLAC National Accelerator Laboratory
Showing 81-91 of 91 Results
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MANUEL RAFAEL VEJAR
Postdoctoral Scholar, Photon Science, SLAC
BioManuel (Manny) Vejar is a postdoctoral scholar at SLAC National Accelerator Laboratory, specializing in synchrotron X-ray fluorescence imaging and X-ray absorption spectroscopy to study environmental and rhizosphere biogeochemistry at the Stanford Synchrotron Radiation Lightsource.
He received his Ph.D. in the Civil & Environmental Engineering & Earth Sciences department at the University of Notre Dame in 2024. His doctoral research focused on the impacts of iron-oxide mineral complexity on the fate and transport of plutonium in nuclear waste repository and/or legacy environmental contamination settings. Specifically, he studied the influence of Al-substitution in iron (oxyhydr)oxide minerals on the redox and speciation behavior of plutonium at the mineral-water interface, employing M4-edge high-energy resolution fluorescence-detected X-ray absorption near-edge structure (HERFD-XANES) spectroscopy to determine the oxidation state and L3-edge extended X-ray absorption fine-structure (EXAFS) spectroscopy to determine coordination environment of the plutonium associated with these minerals.
He has over 7 years of experience with synchrotron techniques (micro-X-ray fluorescence imaging, XANES, and EXAFS), and their applications to study metal(loid)s in environmental systems. During his career, Manny has conducted work at the Stanford Synchrotron Radiation Lightsource, the Advanced Photon Source, and the European Synchrotron Radiation Facility, while collaborating with Chapman University, the Institute of Resource Ecology at the Helmholtz-Zentrum Dresden-Rossendorf, and more recently Oak Ridge, Pacific Northwest, and Livermore national labs, and the University of Puerto Rico in Mayaguez. Prior to his Ph.D. at the University of Notre Dame, Manny obtained his B.Sc. in Geology from the California State Polytechnic University, Pomona. -
Zhichen Xue
Postdoctoral Scholar, Photon Science, SLAC
BioWith his experience in design and synthesis of energy materials, he is dedicated to informing the development of next-generation battery materials through interdisciplinary research and applications. His recent research mainly focuses on advanced synchrotron characterization techniques and advanced cathode materials.
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Zisheng Zhang
Postdoctoral Scholar, Photon Science, SLAC
BioZisheng Zhang, a native of Wuhan, received his B.Sc. in Chemistry from South University of Science and Technology of China, advised by Prof. Jun Li. He obtained his M.Sc. and Ph.D. in Theoretical and Computational Chemistry from UCLA, advised by Prof. Anastassia N. Alexandrova. He was a CSST Fellow at UCLA in 2018 and a research intern at Argonne National Lab in 2022.
Currently, Zisheng is a Stanford Energy Fellow at SLAC, hosted by Dr. Frank Abild-Pedersen and Prof. Thomas Jaramillo. His current research interests include realistic modeling of catalytic interfaces, design of functional materials and molecules, and physics-informed machine learning models. -
Kewei Zhao
Postdoctoral Scholar, Photon Science, SLAC
Current Research and Scholarly InterestsInvestigation of catalytic mechanism of metalloenzyme with spectroscopy methods.
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Yong Zhong
Postdoctoral Scholar, Photon Science, SLAC
Current Research and Scholarly InterestsI focus on the emergent properties of transition metal dichalcogenides using synchrotron-based spectroscopic methods.
