Michel Sassi

Nutrient and contaminant incorporation in amorphous intermediates during carbonate nucleation and growth in biogeochemical systems

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Sebastien Kerisit

Project type

Large-Scale EMSL Research

Mineral nucleation and growth are key processes affecting the mobility of critical plant nutrients and contaminants in soils. Mineral precipitation often occurs via amorphous intermediates whose…

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…

Isotope-Resolved Mapping of Fe(II)/Fe(III)-Oxide Redox Exchange Interfaces

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kevin Rosso

Project type

Special Science

In subsurface redox microenvironments, as an outcome of essential microbial activity, interaction of aqueous Fe(II) with Fe(III)-(oxyhydr)oxide minerals such as goethite and hematite yields a…

Hydro-Biogeochemical Process Dynamics in the Groundwater-Surface Water Interaction Zone

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

John Zachara

This is a renewal proposal for a previous collaborative effort between the PNNL Scientific Focus Area (SFA) and EMSL.PNNL Scientific Focus Area. The PNNL SFA will develop a predictive understanding…

Ion-beam-induced damage mechanisms in pyrochlore-related oxides

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Steven Spurgeon

This project aims to investigate defects induced by ion-beam irradiation in functional oxide systems. Ion-beam irradiation of materials leads to the creation of a range of defects, including Frenkel…

Ion-beam-induced damage mechanisms in pyrochlore-related oxides

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Steven Spurgeon

This project aims to investigate defects induced by ion-beam irradiation in functional oxide systems. Ion-beam irradiation of materials leads to the creation of a range of defects, including Frenkel…

Unraveling Redox Transformation Mechanisms of Ferrihydrite and Micronutrient Metal Incorporation at the Molecular Scale

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kevin Rosso

Project type

Large-Scale EMSL Research

Understanding aquatic chemistry, the natural cycling and fractionation of elements, and energy flow in soils almost always involves, by necessity, attention to the governing influence of electron…

Ion-beam-induced damage mechanisms in thin film oxides

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Steven Spurgeon

This project aims to investigate defects induced by ion-beam irradiation in functional oxide systems. Ion-beam irradiation of materials leads to the creation of a range of defects, including Frenkel…

Ion-beam-induced defect formation in heterostructured interfaces

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Steven Spurgeon

This project aims to expand our investigation of defects induced by ion-beam irradiation in oxide and semiconductor systems. We build on our prior existing EMSL proposals, which resulted in multiple…

Contaminant immobilization through heterogeneous carbonate growth at mineral/water and mineral/microbe interfaces

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Sebastien Kerisit

Project type

Large-Scale EMSL Research

The presence of mineral surfaces and microorganisms significantly impacts the nature and composition of mineral phases formed in biogeochemical systems. Despite the importance of these heterogeneous…

Understanding Mechanisms Coupling the Fates of Iron Oxides, Organic Matter, and Micronutrient Metals at Redox Hot Spots

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kevin Rosso

Project type

Large-Scale EMSL Research

Iron (oxyhydr)oxide minerals are ubiquitous in soils and sediments and play an commanding role in nutrient cycling, microbial metabolism, carbon protection, and contaminant immobilization. Among them…

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…

Coupled Surface and Solid-State Charge and Ion Transport Dynamics at Mineral/Water Interfaces: Redox Transformation of the Iron Oxides

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 BES Geosciences supported project led by Dr. Rosso at PNNL. The past three years of research under this BES project we have been…

The Role of Interfacial Water 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 molecular mechanisms governing the role of interfacial water in the reactivity of mineral phases in supercritical carbon…

Role of Microenvironments and Transition Zones in Subsurface Reactive Contaminant Transport

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James McKinley

This is a renewal proposal for a previous collaborative effort between the PNNL Scientific Focus Area (SFA) and EMSL. The research proposed will resolve critical Hanford and basic subsurface science…

Probing Particle Mediated Growth: Towards a Predictive Understanding of Self-Assembly for Energy Applications

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kevin Rosso

Project type

Large-Scale EMSL Research

This Science Theme proposal aims at developing a fundamental understanding of forces between nanoparticles in aqueous solution that underpin self-assembly of materials by oriented aggregation. This…

Hydro-Biogeochemical Process Dynamics in the Groundwater-Surface Water Interaction Zone

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

John Zachara

This is a renewal proposal for a previous collaborative effort between the PNNL Scientific Focus Area (SFA) and EMSL.PNNL Scientific Focus Area. The PNNL SFA will develop a predictive understanding…

Projects