Arun Devaraj

Coupled Effects of Stress and Hydrogen on Stress Corrosion Cracking of Steels: Atomic Scale investigation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Project type

Contracted Time

Hydrogen exhibits complex behaviors in materials because of its ability to donate all its electrons or to double their number, depending on the environment. The rich variety of H-induced processes is…

Atomic Scale Characterization for Development of Advanced Metallic Alloys for Automotive Applications

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Project type

Contracted Time

Next generation propulsion materials and light weight metallic alloys are needed for electric vehicles. Advanced microstructural characterization can provide material processing-microstructure…

features guiding amelogenin’s transformation of calcium phosphate into enamel – FY23.

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Garry Buchko

One of nature’s hardest materials is enamel, which is 95% (by weight) carbonated hydroxyapatite (HAP). The exceptional functional properties of enamel arise from its intricate hierarchical structure…

Coupled Effects of Stress and Hydrogen on Stress Corrosion Cracking of Steels

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Hydrogen exhibits complex behaviors in materials because of its ability to donate all its electrons or to double their number, depending on the environment. The rich variety of H-induced processes is…

Advanced Microstructural Characterization of Metallic Alloys for Automotive applications

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Advanced microstructural characterization of next generation propulsion materials and light weight metallic alloys can provide material processing-microstructure-mechanical property relationships. In…

Developing Three-dimensional characterization methods for energy and environmental materials

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Three dimensional high resolution nanoscale characterization is pivotal in understanding materials relevant to energy and environmental applications. As a part of this proposal and an LDRD funded by…

Thermal Stability of Nanostructures - An Experimental and Modeling Investigation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Aashish Rohatgi

The goal of this proposal is to develop nanostructured magnesium (Mg)-based alloys that can be fabricated in bulk form (>1 cm3) without compromising their nanostructure, either during the…

Multi-diagnostic approach for correlating light isotopes in materials from nano to macro scales

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Elizabeth Kautz

The accurate quantification and mapping of light element isotopes, such as hydrogen (H) isotopes and lithium (Li) isotopes, is critical to building reliable, accurate mechanistic models during…

Atom Probe Tomography of Structural Materials for Nuclear Reactors

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Danny Edwards

As the world’s population continues to increase, carbon neutral energy resources like nuclear power become increasingly important. A major challenge facing the design of advanced nuclear power…

Nanoscale compositional and structural analysis of U-10Mo alloys.

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

PNNL as a part of the U.S. Department of Energy National Nuclear Security Administration's Office of Conversion within the Office of Material Minimization and Management (M3) is working on…

Nanoscale elemental and isotopic analysis of U-10Mo alloys

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Elizabeth Kautz

Uranium alloyed with 10 wt% molybdenum (U-10Mo) has been selected to replace highly enriched uranium oxide dispersion fuels for use in high performance research and test reactors. Manufacturing U…

Characterization of Nb Films

Lead Institution

Hewlett-Packard Company

Principal Investigator

Douglas Ohlberg

3-D chemical imaging of HP supplied Nb oxide and Nb nitride thin films. These films will be prepared using the EMSL FEI Helios Nanolab dual-beam focused ion beam/scanning electron microscopy (FIB/SEM…

Detection and Quantification of Light Isotopes in TPBAR Components by Atom Probe Tomography

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

John Hardy

Tritium-producing burnable absorber rods (TPBARs) used in the U.S. Department of Energy's Tritium Readiness Program are designed to produce tritium when irradiated in a nuclear reactor. The…

Ion-beam-induced defect formation in oxide thin films

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Steven Spurgeon

This project aims to study ion-beam irradiation-induced defects in oxide and semiconductor systems. It is challenging to predict the defects that will form under different irradiation conditions in…

Multimodal chemical imaging of energy, environmental, and biological materials.

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

As a part of this proposal and an LDRD funded by Chemical Imaging Initiative for AMBER Beamline development at LBNL, we aim to develop a combined STXM/XPS-TEM-APT multimodal chemical imaging…

Developing a predictive understanding of thermodynamics and kinetics of phase transformation and defect evolution during concurrent ion irradiation and transient heating

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

As a part of PNNL Physical and computational sciences directorate seed LDRD project, we aim to develop a predictive understanding of the phase transformation pathway and defect evolution mechanisms…

Correlative In-situ/Ex-situ Approaches to Reveal the Mass Transport Mechanisms During Shear Deformation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Bharat Gwalani

Solid phase processing (SPP) of alloys using multi-scale shear-deformation produces not only enhanced mechanical properties, but also results in nanoscale metastable phases. Revealing mass transport…

The Role of Interfacial Processes on Mineral Transformations in Wet Supercritical CO2

Lead Institution

Washington State University

Principal Investigator

Andrew Felmy

Project type

Large-Scale EMSL Research

We propose a comprehensive experimental and theoretical investigation of the role of interfacial water and CO2 on the energies, mechanisms, and rates of reactivity of a series of orthosilicate and…

Thermally Stability of Nanostructures - An Experimental and Modeling Investigation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Aashish Rohatgi

The goal of this proposal is to develop nanostructured alloys that can be fabricated in bulk form (>1 cm3) without compromising their nanostructure, either during the fabrication process or during…

NANOSCALE COMPOSITIONAL ANALYSIS OF HEAVY-METAL RICH BIO-MATERIALS

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

The jaws, leg claws, stings and other “tools” of a large fraction of arthropods, some worms and mem-bers of other phyla, contain extraordinary amounts of heavy metals or bromine (e.g. Zn, Mn, Fe, Cu,…

High Resolution Studies to Reveal Coupled Effects of Stress and Hydrogen on Stress Corrosion Cracking of Steels

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Hydrogen exhibits complex behaviors in materials because of its ability to donate all its electrons or to double their number, depending on the environment. The rich variety of H-induced processes is…

Nanolayered, Self-healing Radiation Shielding Foils

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Theva Thevuthasan

Recent discovery and research indicate that materials can be hardened against radiation damage by building nanolayered structures with an optimized layer thickness to increase point defect…

Advanced Techniques for Nuclear Materials Characterization

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Dallas Reilly

PNNL is home to state of the art research capabilities, which are often underutilized on radioactive samples due to non-dispersion requirements and limits on sample quantity that can enter workspaces…

Nanoscale compositional and structural analysis of rolled U-10Mo alloys.

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

PNNL as a part of the U.S. Department of Energy National Nuclear Security Administration's Office of Conversion within the Office of Material Minimization and Management (M3) is working on…

Advanced Microstructural Characterization of Metallic Alloys for Automotive applications

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Advanced microstructural characterization of next generation propulsion materials and light weight metallic alloys can provide material processing-microstructure-mechanical property relationships. In…

Site specific atomic resolution chemical imaging to probe structure-property relationship under dynamic and/or operando conditions using in-situ and ex-situ methods based on multi-instrument approach

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Chongmin Wang

The goal of this proposal is to develop chemical imaging capabilities that drive the atomic-level imaging and spectroscopic analysis of materials related to energy and environmental issues under in…

Atom Probe Tomography (APT) of Heavy-Metal Rich Biomaterials from Soil Arthropods

Lead Institution

University of Oregon

Principal Investigator

Robert Schofield

The jaws, leg claws, stings and other ?tools? of a large fraction of arthropods, some worms and members of other phyla, contain extraordinary amounts of heavy metals or bromine (e.g. Zn, Mn, Fe, Cu,…

Correlated Multimodal in situ Gas-Metal Alloy Surface Reaction Studies

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

This project will bring together a technically-diverse group of early career staff scientists across all directorates, for a comprehensive demonstration of PNNL capabilities for multimodal in situ…

A multi-disciplined approach to understand the structural, spatial, and temporal features guiding amelogenin’s transformation of calcium phosphate into enamel

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Garry Buchko

One of nature’s hardest materials is enamel, which is 95% (by weight) carbonated hydroxyapatite (HAP). The exceptional functional properties of enamel arise from its intricate hierarchical structure…

Microstructural Characterization of Novel Titanium Alloys Developed via a Low Cost Powder Metallurgy Process

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Curt Lavender

With the support of the Department of Energy’s Office of Fuel Cell and Vehicle Technologies (DOE/OFCVT) Program the Pacific Northwest Laboratory (PNNL) and ADMA Products Inc. (ADMA) have recently…

Understanding nanoscale composition and structure of U-10Mo alloys.

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

PNNL as a part of the Global Threat Reduction Initiative (GTRI) Convert program is working on converting the high enriched uranium (HEU) fuel currently used in civilian research and test reactors to…

Irradiation induced changes in TPBAR Components by Atom Probe Tomography

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Tritium-producing burnable absorber rods (TPBARs) used in the U.S. Department of Energy’s Tritium Readiness Program are designed to produce tritium when irradiated in a nuclear reactor. The exterior…

Developing next generation multimodal chemical imaging capability by combining STEM/APT/STXM/HIM

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Understanding complex energy conversion and storage systems hinges upon developing a fully three-dimensional analysis of the structure and chemistry with sub-nanometer spatial and chemical resolution…

Static and dynamic study of interfaces and grain boundaries in solution processed halide perovskite based advanced energy conversion systems

Lead Institution

University of California, San Diego

Principal Investigator

Ying Meng

Project type

Large-Scale EMSL Research

Advanced energy conversion systems that meet global demands present a formidable goal for a sustainable future. Renewables resources are underexploited, and warrant further research to exploit their…

High resolution nanoscale analysis of energy materials

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

The proposed project aims to study the relation between nanoscale material structure and bulk performance metrics for a variety of energy materials ranging from generation, conversion to storage. …

Fundamental of High Entropy Alloy: computationally guided material design

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jun Cui

Project type

Large-Scale EMSL Research

We propose a comprehensive effort aimed at understanding the fundamentals of high entropy (HE) alloys, in particular, thermodynamics of alloy formation, stability, and deformation mechanism at high…

Characterization of Novel Rapidly Solidified and Nanostructured Alloys

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Nicole Overman

The goal of this proposal is to to develop robust synthesis strategies for producing nanocomposite particle or flake precursors with far-from-equilibrium compositions and nanostructured features…

Microstructural Evolution under Shear Deformation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Solid phase processing (SPP) of alloys using shear-deformation results in nanoscale metastable phases and enhanced mechanical properties. High-speed mass and energy transfer during such process makes…

Structural evolution and phase transformation characteristics of amorphous silicon upon lithiation and delithiation

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Scott Lea

Amorphous silicon (a-Si) has been identified as a candidate high capacity anode material for lithium ion batteries. A fundamental challenge with a-Si is the large volume change upon lithium…

Thermally Stability of Nanostructures - An Experimental and Modeling Investigation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Aashish Rohatgi

The goal of this proposal is to develop nanostructured alloys that can be fabricated in bulk form (>1 cm3) without compromising their nanostructure, either during the fabrication process or during…

Correlated Multimodal in situ Gas-Metal Alloy Surface Reaction Studies

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

This project will conduct a comprehensive demonstration of PNNL capabilities for multimodal in situ chemical imaging of structural, compositional and chemical state changes on metallic alloy surfaces…

3D nanoscale characterization of nanostructured Soft Magnetic Materials

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jun Cui

Nanostructured soft magnetic materials will drastically improve magnetic performance of soft magnets, which in turn will result in improvement in efficiency and reduce the cost of motors, power…

Characterization of Novel Rapidly Solidified and Nanostructured Alloys

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Nicole Overman

The goal of this proposal is to further develop robust synthesis strategies for producing nanocomposite particle or flake precursors with far-from-equilibrium compositions and nanostructured features…

A multi-pronged approach to characterizing amelogenin’s role in enamel formation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Garry Buchko

Biomineralization is the process used by living organism to produce minerals with properties not always found in their equivalent inorganically produced counterparts. In vertebrates, mineralized…

A multi-modal approach to understanding the structural evolution and phase transformation of amorphous silicon upon lithiation insertion and extraction

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Scott Lea

Amorphous silicon (a-Si) has been identified as a candidate high capacity anode material for lithium ion batteries. A fundamental challenge with a-Si is the large volume change upon lithium…

ATOM PROBE TOMOGRAPHY (APT) OF HEAVY-METAL RICH BIOMATERIALS FROM SOIL ARTHROPODS

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

The jaws, leg claws, stings and other “tools” of a large fraction of arthropods, some worms and members of other phyla, contain extraordinary amounts of heavy metals or bromine (e.g. Zn, Mn, Fe, Cu,…

A multi-disciplined approach to characterize the functional role of the biomineralization protein amelogenin in enamel formation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Garry Buchko

Biomineralization is the process used by living organism to produce minerals with properties not always found in their equivalent inorganically produced counterparts. In vertebrates, mineralized…

3D nanoscale characterization of nanostructured Soft Magnetic Materials

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jun Cui

Nanostructured soft magnetic materials will drastically improve magnetic performance of soft magnets, which in turn will result in improvement in efficiency and reduce the cost of motors, power…

Understanding nanoscale composition and structure of U-10Mo alloys.

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

PNNL as a part of the Global Threat Reduction Initiative (GTRI) Convert program is working on converting the high enriched uranium (HEU) fuel currently used in civilian research and test reactors to…

Multimodal Analysis of Microstructural Evolution under Shear Deformation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Arun Devaraj

Solid phase processing (SPP) of alloys using shear-deformation results in nanoscale metastable phases and enhanced mechanical properties. High-speed mass and energy transfer during such process makes…

Projects