Materials Research Society Fall Meeting 2023
PNNL is showcasing interdisciplinary work in fundamental and applied areas of materials science.
Boston
Featured symposium
November 27 – December 6, 2023
Symposium CH02 - Advances in In Situ TEM Characterization of Dynamic Processes in Materials
Co-organizer: Dongsheng Li
Invited speaker: James De Yoreo
Summary: The symposium covers a broad range of topics, including particle nucleation and growth, phase transformations, and interface dynamics with gases, liquids, and solids. This symposium aims to provide a platform for discussion to understand the physical and chemical processes governing the dynamic process of behavior under different external stimuli using in situ TEM, as well as computer-aided image analysis and data processing, (e.g. artificial intelligence algorithms).
Selected PNNL presentations
Tuesday, November 28
An In Situ Look at Interfacial Controls on Crystal Nucleation and Assembly
Session: 8:30 – 9:00 a.m. EST, Location: Sheraton, Second Floor, Republic A
PNNL Presenter: James De Yoreo
Summary: The results of this study reveal the importance of surface charge, organic ligands, chemical gradients, and solvent organization near interfaces in determining how ordered solids emerge from the solution.
Peptoid-Controlled Synthesis of Hierarchical Composite Nanomaterials
Session: 8:45 – 9:00 a.m. EST, Location: Hynes, Room 101
PNNL Presenter: Chun-Long Chen
Summary: To develop self-assembling peptoids for controlled formation and morphogenesis of hierarchical composite nanomaterials, a combination of in situ imaging and molecular simulations were used to elucidate the principles underlying peptoid-controlled inorganic crystallization with the ultimate goal of enabling predictive materials synthesis across scales.
Liquid Electrolytes and Solid Electrolytes for High-Energy Lithium Batteries
Session: 9:00 – 9:30 a.m. EST, Location: Hynes, Level 3, Room 304
PNNL Presenter: Jun Liu
Summary: Batteries play a critical role in modern society. The electrification of transportation and deep decarbonization require the development and deployment of high-energy, low-cost battery materials and technologies.
Solvation Directed Dimensionality and Hierarchy Control in Solution Synthesis of Nanomaterials
Session: 9:00 – 9:15 a.m. EST, Location: Sheraton, Second Floor, Republic A
PNNL Presenter: Maria Sushko
Summary: The development of structural hierarchy on various length scales during crystallization process is ubiquitous in biological systems and is common in synthetic nanomaterials. The driving forces for the formations of complex architectures range from local interfacial interactions that modify interfacial speciation, local supersaturation, and nucleation barriers, to macroscopic interparticle forces.
Understanding the Atomic Scale Mechanisms of Oxidation and Hydrogen Embrittlement of Nuclear Structural Materials using In Situ and Cryogenic Transfer Atom Probe Tomography
Session: 10:00 – 10:30 a.m. EST, Location: Sheraton, Third Floor, Dalton
PNNL Presenter: Arun Devaraj
Summary: When nuclear structural materials, specifically stainless steel, are subjected simultaneously to applied tensile stress and a corrosive, high-temperature water interplay of hydrogen and oxygen interactions with the alloy microstructure are thought to lead to intergranular stress corrosion cracking. Despite decades of research on stress corrosion cracking mechanisms of stainless steel, crucial knowledge gaps remain about the atomic scale mechanisms responsible for intergranular oxidation and hydrogen embrittlement.
Emulating Nature’s Way of Making Materials
Session: 10:15 – 10:45 a.m. EST, Location: Hynes, Level 1, Room 101
PNNL Presenter: James De Yoreo
Summary: From harvesting solar energy to capturing carbon monoxide and purifying water, living organisms have solved some of the most vexing challenges now faced by humanity. They have done so by creating a vast library of proteins and other macromolecules that can assemble into complex architectures and direct the mineralization of inorganic components to produce materials characterized by a hierarchy of structure.
Wednesday, November 29
Assembly of Sequence-Defined Peptoids into Crystalline Nanomaterials as Biomimetic Catalysts
Session: 4:00 – 4:15 p.m. EST, Location: Sheraton, Second Floor, Republic A
PNNL Presenter: Chun-Long Chen
Summary: While natural enzymes, including lignin peroxidase, phosphotriesterase, and carbonic anhydrase, are promising for various applications, such as lignin depolymerization, degradation of toxic organophosphates, and accelerated carbon monoxide precipitation, there are numerous key technical barriers to prevent their practical applications, because they often suffer from low stability and high cost.