Projects

Atomically Resolved Studies of Catalytic and Photocatalytic Processes on TiO2(110)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Zdenek Dohnalek

Project type

Large-Scale EMSL Research

This proposal is a continuation of research under EMSL User Proposal #14591. In the last two decades, titanium dioxide has emerged as an extremely promising material with numerous applications in…

Effect of Changing Rainfall and Temperature on Biochemical Composition of Soil Organic Matter

Lead Institution

University of California, Merced

Principal Investigator

Asmeret Berhe

Project type

Large-Scale EMSL Research

We are proposing to use 13C-NMR spectroscopy to analyze the relative abundance of organic functional groups in soil organic matter (SOM) in order to better understand the stability of SOM under…

Global Cloud Resolving Model: Benchmarking, Data Access, and Model Testing

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Karen Schuchardt

Project type

Large-Scale EMSL Research

This EMSL Science Theme proposal is targeting use of the EMSL MPP2 cluster, Lustre file system, and visualization server to support the recently funded SciDAC proposal Community Access to Global…

Addressing Challenges in Nanoscale Characterization

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Daniel Gaspar

Project type

Large-Scale EMSL Research

Nanoscale materials offer the promise of significant advances in fields as diverse as the production, storage and efficient use of energy, sensing and environmental remediation. The characterization…

The Relationship between Particle Properties and Ice Nucleation:
Laboratory and Field Investigation and Parameterization Development

Lead Institution

University of Wyoming

Principal Investigator

Xiaohong Liu

Project type

Large-Scale EMSL Research

Atmospheric aerosols impact the climate by scattering and absorbing solar radiation and in their role as cloud condensation nuclei (CCN). Cloud properties are strongly dependent on the number of CCNs…

The Role of Ice and Aerosol Surfaces in Halogen Activation in the Arctic Springtime Boundary Layer

Lead Institution

University of Alaska Fairbanks

Principal Investigator

William Simpson

Project type

Large-Scale EMSL Research

The UAF research group of Prof. Simpson is performing an intensive field campaign in Barrow, Alaska during March 2007. The goal of this field campaign is to quantify the amounts of reactive bromine …

Undoped and n-type doped TiO2 Anatase Surface Structures and Reactivity with Water.

Lead Institution

University of Wisconsin, Milwaukee

Principal Investigator

Carol Hirschmugl

Project type

Large-Scale EMSL Research

Of all the crystallographic forms of TiO2, anatase is technologically the most interesting. N-type doped TiO2 is useful for photocatalytic reactions, and in particular N-doped TiO2 has been…

Reductive Transformation of Iron Oxides: Coupled Solution and Solid-State Pathways

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kevin Rosso

Project type

Large-Scale EMSL Research

Reductive transformation of Fe(III)-oxides such as &#61537; Fe2O3 (hematite) by aqueous dissolution / re precipitation is a central part of the natural biogeochemical iron cycle in the…

Solid-State NMR Characterization of Semiconductor Nanoparticle/Polymer Interfaces

Lead Institution

The University of Akron

Principal Investigator

Matthew Espe

Project type

Large-Scale EMSL Research

Cadmium chalcogenide (CdX; X = S, Se, Te) semiconducting nanoparticles have unique optical, catalytic and energy transfer properties as a result of their nanoscale size diameters. These particles…

Chemistry and Microphysics of Small Particles

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Alla Zelenyuk-Imre

Project type

Large-Scale EMSL Research

This proposal is a continuation of research under EMSL User Proposal #17498. Atmospheric aerosol particles impact the global climate by scattering solar radiation to space and in their role as cloud…

Gregory Szulczewski's Proposal

Lead Institution

University of Alabama

Principal Investigator

Gregory Szulczewski

Project type

Large-Scale EMSL Research

Hydrogenation of 1-nitro-1-cyclohexene on an Au/TiO2 model catalyst Titanium dioxide is a well-known material for metal-supported catalysis and photocatalysis. In particular, the use of Au…

Hygroscopic Properties of Aerosol Organics

Lead Institution

Desert Research Institute

Principal Investigator

Douglas Lowenthal

Project type

Large-Scale EMSL Research

While organics constitute a large fraction of ambient aerosol mass, their role and effect on particle hygroscopic growth and cloud nucleation remains unclear. Organics are most often present in…

The Effect of Surface Active Organic Molecules on the Water Uptake, Shape and Density of Hygroscopic Particles of Atmospheric Importance

Lead Institution

University of Colorado at Boulder

Principal Investigator

Gayfree Ellison

Project type

Large-Scale EMSL Research

This proposal is a continuation of research under EMSL User Proposal #16741. Field measurements of aerosol compositions consistently reveal that organics make up a significant fraction of the…

The Characterization of Diesel Exhaust Particle Matter and its Atmospheric Lifecycle: The Size, Shape and Composition of Soot Particles in the Atmosphere

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

George Muntean

Project type

Large-Scale EMSL Research

Elemental carbon or soot particles, the majority of which are emitted by diesel engines, significantly impact the Global Climate. Most atmospheric particles impact is to cool the planet by scattering…

The Cloud Nucleating Properties of Aerosols at a Continental Site: CHAPS Study

Lead Institution

Shenyang Pharmaceutical University

Principal Investigator

Jian Wang

Project type

Large-Scale EMSL Research

The primary goal of The Cumulus Humilis Aerosol Processing Study (CHAPS) is to characterize and contrast freshly emitted aerosols above, within and below fields of cumulus humilis (or fair-weather…

ClusterSculptor: An Expert Driven Visual Analytics Tool for the Classification of Single Particle Mass Spectra

Lead Institution

State University of New York at Stony Brook

Principal Investigator

Klaus Mueller

Project type

Large-Scale EMSL Research

This proposal is a continuation of research under EMSL User Proposal #3644. Single particle mass spectrometers and SPLAT in particular generate massive amounts of complex detailed data. Dr. Zelenyuk…

Experimental Investigation of Sr-90 Subsurface Contamination Sequestration in Hanford 100N Area Sediments by Surface Infiltration of an Apatite Solution

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James Szecsody

Project type

Large-Scale EMSL Research

Strontium-90 (Sr-90) discharge from past-practice liquid waste disposal sites in the Hanford 100N area have resulted in Sr-90 release to groundwater, Columbia River, and biota on the Columbia River…

Subsurface Reductive Elimination of Trichloroethylene using Zero-Valent Iron Emplaced by Polymer Solutions

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Michael Truex

Project type

Large-Scale EMSL Research

Zero-valent iron (ZVI) has been used for in situ remediation of inorganic compounds and chlorinated solvents through engineered permeable reactive barriers and injectable ZVI particles. A key aspect…

Role of Surface and Interface on Transport Properties in Nanoscale Conducting Oxides

Lead Institution

University of South Carolina

Principal Investigator

Xiao-dong Zhou

Project type

Large-Scale EMSL Research

Size-dependent (&#8804;50 nm) chemical and physical properties of electronic materials have been attributed to primarily either intrinsic contributions, such as changes in the lattice energy and…

Material Homogeneity Studies on 3D Microfabricated Ceramic Structures Using Nanoparticle Building Blocks

Lead Institution

Oregon State University

Principal Investigator

Sundar Atre

Project type

Large-Scale EMSL Research

Nanoparticles are required for both geometric and performance attributes in numerous microscale applications. Curiously, numerous synthesis routes for nanoscale powders have been reported yet…