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Zheming Wang

Institution
Pacific Northwest National Laboratory

Projects

Crystal Perfection in Cadmium Zinc Telluride Radiation Detectors

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Mary Bliss
Project type
Exploratory Research
This effort is to collect high resolution x-ray diffraction data to correlate with thermally stimulated current measurements. The samples are cadmium zinc telluride which have the potential to be…

Building a Predictive Understanding of Particle-Based Mineral Growth

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
James De Yoreo
Project type
Large-Scale EMSL Research
Traditional models of mineral formation through monomer-by-monomer addition have been challenged by recent evidence for crystallization through the addition of "particles," ranging from…

Development of an integrated atomic force / fluorescence microscope at EMSL

Lead Institution
The Ohio State University
Principal Investigator
Brian Lower
Project type
Large-Scale EMSL Research
We propose to develop a new spectroscopic/microscopic capability at EMSL that combines atomic force microscopy (AFM) with fluorescence microscopy allowing for simultaneous force and fluorescence…

Structure and Catalytic Activity of Supported Early Transition Metal Oxide Clusters (Kay's BES/Chemical Physics-Catalysis WBS0502 of Peden's BES-Chemical Transformations at Complex Interfaces, PNNL Scope #47319)

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Zdenek Dohnalek
Project type
Exploratory Research
Current commercial heterogeneous catalysts are structurally and chemically complex and measurements on them can seldom be interpreted with atomic-level precision. This is especially so for supported…

photo-luminescence of nano-oxides

Lead Institution
Motorola
Principal Investigator
Yong Liang
Project type
Exploratory Research
to determine the photo-luminescence property and the lifetime of photo-excited electrons and holes. Need to conduct PL measurements (both regular and time-resolved) on SrTiO3 and Cu2O samples.

Influence of Speciation on the Transport of U(VI) through Hanford Sediments

Lead Institution
Oak Ridge National Laboratory
Principal Investigator
Melanie Mayes
Project type
Exploratory Research
Uranium(VI) in the subsurface at the Department of Energy's (DOE) Hanford site poses a significant risk to the quality of the Columbia River and to future populations. Coupled hydrological and…

Chemically-selective Sensor Film Characterization

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Zheming Wang
Project type
Exploratory Research
A new film material comprised of quaternized poly(4-vinylpyridine) cross-linked with 1,10-diiododecane (herein QPVP) has been developed for possible use in the spectroelectrochemical sensor for…

Microstructures and Their Stability of Ion-implanted Energy and Storage Materials

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Weilin Jiang
Project type
Large-Scale EMSL Research
Two parallel studies, respectively funded by Office of Basic Energy Sciences and Office of Nuclear Energy, U.S. Department of Energy, will be performed under this user proposal. The objectives of the…

Visualizing Uranium Atom Exchange in UO2 Driven by Biogeochemical Processes

Lead Institution
Washington University in St. Louis
Principal Investigator
Daniel Giammar
Project type
Large-Scale EMSL Research
Redox-driven recrystallization of metal oxides is an exciting environmental phenomenon that can influence biogeochemical cycles of both nutrients and contaminants. This phenomena occurs in systems…

Characterization of Pure and Doped ZnO Nanoclusters

Lead Institution
University of Idaho
Principal Investigator
JiJi Antony
Project type
Exploratory Research
ZnO is a wide-band gap semiconductor (3.3 eV) that has attracted tremendous interest as blue light emitting spintronic material. ZnO particles when doped with transition metals can develop properties…

Advances in Understanding Electron Transfer Kinetics at Environmental Interfaces

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Kevin Rosso
Project type
Large-Scale EMSL Research
This EMSL user proposal requests a continuation of EMSL access for a BER funded Environmental Molecular Sciences Institute (EMSI) project led by Dr. Rosso at PNNL. This project constitutes the PNNL…