James De Yoreo | Environmental Molecular Sciences Laboratory

Biomimetic controls over the formation of functional materials using sequence-defined macromolecules

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Chunlong Chen

Project type

Contracted Time

The aim of this proposal is to utilize the capabilities of EMSL to investigate the self-assembly of sequence-defined macromolecules, such as proteins and peptoids, into hierarchical materials and…

Understanding the impact of interfacial radiolysis on the dynamics of mineral nanoparticle interactions

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Lili Liu

Project type

Contracted Time

The primary objective of this proposal is to advance our understanding of the dynamic processes that govern the aggregation of environmentally relevant nanoparticles, such as boehmite and gibbsite,…

The role of biopolymers in controlling kinetics of mineral growth via particle aggregation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Dongsheng Li

Project type

Large-Scale EMSL Research

Mineral crystallization is ubiquitous in environmental and biological systems and its progression in these settings reflects an inexorable link between the two. Particle aggregation, such as oriented…

Elucidating the Ice Formation and Transformation Pathways in Aerosols at Atomic Resolution

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jingshan Du

Project type

Large-Scale EMSL Research

Ice formation and transformation in aerosols are critical in defining atmospheric processes and human activities. Despite efforts to study ice formation using macro- and micro-scale approaches,…

The role of biopolymers in controlling mineral nucleation pathways and aggregation kinetics

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

Biopolymers are one of the most important regulators in controlling crystallization processes. They guide nucleation and growth by binding ions and/or templating mineral interfaces and alter particle…

Studying the Local Structure of Hydrogen Bond Networks via Low-Temperature Atomic-Resolution Electron Microscopy

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jingshan Du

Molecular crystals such as ice and various frozen alcohols are connected by hydrogen bonds and often form at low temperatures away from ambient conditions. As such, these crystals are typically very…

Programmable Synthesis of Structurally Diverse and Functional Biomimetic Materials from Sequence-defined Polymers

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Chunlong Chen

Programmable synthesis of functional nanomaterials with diverse morphologies and functionalities is challenging in terms of both the limited chemical systems accessible and a lack of understanding of…

Investigating the nucleation pathway of CeO2 nanoparticles using Cryo-TEM

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

CeO2 nanoparticles can form oxygen vacancies at the surface of the particles, reducing nearby Ce4+ to Ce3+. This defect chemistry makes them highly useful as antioxidants in biological tissues…

In situ TEM study of growth mechanisms of branched nanowires

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

Electrical, optical and mechanical properties of inorganic nanostructures have strong relationships with their morphologies. For example, one-dimensional (1D) nanomaterials such as carbon nanotubes,…

Directed Organization of Biological Materials at Inorganic Interfaces

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

This research supports the BER mission to understand the mechanisms underlying biological processes in microbial systems and how to manipulate them in order to harness these processes for…

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…

Liquid and environmental TEM as transformative capabilities in carbon cycle research

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

Project type

Special Science

The purpose of this research is to develop a quantitative picture of the impact of increasing global temperatures on organic-soil mineral interactions within the context of both microbial control…

Detection of proteins in biological apatite crystals by Atom Probe Tomography

Lead Institution

University of Southern California

Principal Investigator

Janet Moradian-Oldak

This research supports the BER mission in understanding the biomineralization processes in general and studying the function of organic matrix components in these processes in particular. Dental…

Pre-equilibrium in-situ solvated ion/molecular adsorption processes and events on solid substrates in aqueous environments: Adsorption discretization, surface adsorption waves and repulsive forces

Lead Institution

Guangzhou University

Principal Investigator

Mario Gomez

Project type

Large-Scale EMSL Research

The purpose of the proposed work is to image and analyze chemically at the micro-nano scale pre-equilibrium adsorption processes and events hypothesized to occur (adsorption discretization, surface…

In situ characterization of soil organic carbon-mineral interactions for carbon cycle research

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

The purpose of this research is to develop a quantitative picture of the impact of increasing global temperatures on organic-soil mineral interactions within the context of both microbial control…

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…

The impact of organic-mineral interactions on soil organic matter stability and mineral evolution

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

The aims of the proposed research are to: 1) determine the impact of adsorbed organics on mineral-solution interfacial structure, 2) understand how organics impact solution speciation during mineral…

Controls of bioorganic constituents of soils in the confined regions between mineral surfaces on nucleation and aggregation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

Project type

Large-Scale EMSL Research

The aims of the proposed research are to: 1) Determine the structure of the near surface water layer in the confined region between approaching mineral surfaces and determine the impact of…

Probing the Mechanism of Anion Exchange in Cesium Lead HalidePerovskites via gas cell TEM

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

Using a combination of high-resolution and in situ TEM techniques, this work aims to develop an atomic-scale mechanistic understanding of anion exchange reactions and dopant migration in cesium lead…

Biomimetic controls over the formation of organic-inorganic hybrid materials through the design of bio- and biomimetic macromolecules

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Chunlong Chen

The aim of this proposal is to utilize the capabilities of EMSL to investigate the self-assembly of bio- and biomimetic macromolecules, such as proteins and peptoids, into hierarchical materials and…

Probing the Mechanism of Anion Exchange in Cesium Lead Halide
Perovskites via gas cell TEM

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

My proposed research project seeks to elucidate the anion exchange mechanism of CsPbX3 perovskites and related materials using the advanced electron microscopy resources available at PNNL. Colloidal…

Revealing the Interfacial Structures and Formation Dynamics of Nanocrystalline Ice Using in situ Electron Microscopy

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jingshan Du

Despite being one of the most important processes in atmospheric precipitation and therapeutic treatment, nanoscale ice formation remains poorly understood. We propose to develop real-space…

Biomineralization Study of Otoconia by Atomic Force Microscopy

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

In this proposal, we are going to use ex situ and in situ atomic force microscopy to investigate the role of four key key proteins in the formation of otoconia. We will observe adsorption and self…

Spatial and temporal Study of assembly of organic matrix and their roles in mineral nucleation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

Self-assembled protein architectures exhibit diverse structural motifs including particles, fibers, ribbons and sheets. Their functions include selective transport, structural scaffolding, templated…

Projects