Ponnusamy Nachimuthu

Three-Dimensional Structural Analysis of Altered Micas by Ion Beam/Scanning Electron Microscopy (FIB/SEM Dual Beam), µ-X-ray Diffraction, and Transmission Electron Microscopy

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Bruce Arey

Micaceous minerals such as biotite [K(Mg,Fe)3AlSi¬O10(F,OH)2] and muscovite [KAl2(AlSi3O10)(F,OH)2] are ubiquitous components of detrital sediments, including the soils at the Hanford Site in…

Ion-Solid Interactions in Ceramics

Lead Institution

University of Tennessee

Principal Investigator

William Weber

Project type

Exploratory Research

Experimental project to investigate defects, defect properties, defect processes, and the evolution of nanostructures and phase transformations in ceramics under ion irradiation. The work primarily…

Ion-Solid Interactions in Ceramics

Lead Institution

University of Tennessee

Principal Investigator

William Weber

Project type

Exploratory Research

Experimental project to investigate defects, defect properties, defect processes, and the evolution of nanostructures and phase transformations in ceramics under ion irradiation. The work primarily…

Developing in-spectrometer photochemistry and integration of molecular imaging techniques: Probing photoinduced electronic structure variations in dye-sensitized TiO2 model system

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Ponnusamy Nachimuthu

The aim of this project is to develop capabilities that will advance the fundamental understanding of charge transfer and photochemical behavior of organic molecular layers on surfaces as applicable…

The Reaction Specificity of Nanoparticles in Solution: Interactions between Iron Nanoparticles, their Coatings, and the Environment

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Donald Baer

Project type

Large-Scale EMSL Research

The objective of our research is to obtain fundamental information about the physical and chemical transformations that occur on and within mineral oxide nanoparticulates due to electron transfer…

Molecular-scale visualization of ligand conformation on functionalized nanoparticles: A combination of experimental and theoretical studies

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Theva Thevuthasan

The goal of this project is to develop capabilities that will advance the fundamental understanding of the interaction between the nanoparticles surfaces and organic ligand molecules as applicable to…

Influence of Gd and Sm Doping on Atomic and Ionic Transport Properties of Novel Nanostructured Ceria-Zirconia Multilayers

Lead Institution

Battelle India

Principal Investigator

Satyanarayana Kuchibhatla

Project type

Exploratory Research

This project aims to develop the understanding of ionic transport processes in nanostructured materials that may enable the design of new types of electrolyte materials for electrochemical device…

Photochemical studies on N-doped TiO2 single crystals - Fundamental Investigations of Water Splitting on Model TiO2 (Mike Henderson's BES Project - 48526)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Michael Henderson

Project type

Exploratory Research

This program's overall goals are aimed at the development of new energy sources for the 21st century. Hydrogen has considerable potential as an alternative fuel. Research includes examining the…

MBE Growth and Properties of Model TiO2 Surfaces for Fundamental Studies of Heterogeneous Photocatalysis

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Scott Chambers

Project type

Large-Scale EMSL Research

The overall objective of this project is to provide the field of heterogeneous photocatalysis with unique insights into the molecular-level properties of photocatalytic transformations on TiO2…

MBE Growth and Properties of N-doped TiO2 for Enhanced Visible Light Absorption and Water Splitting

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Scott Chambers

Project type

Large-Scale EMSL Research

Development of new energy sources is a major need for the 21st century. Hydrogen has considerable potential as an alternative fuel. Fujishima and coworkers discovery in 1969 that water could be…

Photochemical studies on N-doped TiO2 single crystals - Fundamental Investigations of Water Splitting on Model TiO2 (Mike Henderson's BES Project - 48526)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Michael Henderson

Project type

Large-Scale EMSL Research

Development of new energy sources is a major need for the 21st century. Hydrogen has considerable potential as an alternative fuel. The discovery by Fujishima and coworkers in 1969 that water could…

Electron energy loss in radiation detection materials

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Bret Cannon

Project type

Large-Scale EMSL Research

The proposed project will develop the capability at Pacific Northwest National Laboratory (PNNL) to measure processes by which high energy electrons lose energy in solids and how that lost energy is…

Fundamental understanding of charge transfer from a Ru-based dye adsorbate to a TiO2(110) surface

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Michael Henderson

Project type

Large-Scale EMSL Research

Ru-based dye-sensitized TiO2 solar cells have attracted significant attention because of their potential use in photovoltaic cells[1,2]. These devices utilize films of optically transparent TiO2…

EMSL Science Overview

Ponnusamy Nachimuthu

Projects

Three-Dimensional Structural Analysis of Altered Micas by Ion Beam/Scanning Electron Microscopy (FIB/SEM Dual Beam), µ-X-ray Diffraction, and Transmission Electron Microscopy

Ion-Solid Interactions in Ceramics

Ion-Solid Interactions in Ceramics

Developing in-spectrometer photochemistry and integration of molecular imaging techniques: Probing photoinduced electronic structure variations in dye-sensitized TiO2 model system

The Reaction Specificity of Nanoparticles in Solution: Interactions between Iron Nanoparticles, their Coatings, and the Environment

Molecular-scale visualization of ligand conformation on functionalized nanoparticles: A combination of experimental and theoretical studies

Influence of Gd and Sm Doping on Atomic and Ionic Transport Properties of Novel Nanostructured Ceria-Zirconia Multilayers

Photochemical studies on N-doped TiO2 single crystals - Fundamental Investigations of Water Splitting on Model TiO2 (Mike Henderson's BES Project - 48526)

MBE Growth and Properties of Model TiO2 Surfaces for Fundamental Studies of Heterogeneous Photocatalysis

MBE Growth and Properties of N-doped TiO2 for Enhanced Visible Light Absorption and Water Splitting

Photochemical studies on N-doped TiO2 single crystals - Fundamental Investigations of Water Splitting on Model TiO2 (Mike Henderson's BES Project - 48526)

Electron energy loss in radiation detection materials

Fundamental understanding of charge transfer from a Ru-based dye adsorbate to a TiO2(110) surface