Join the Pittsburgh Chapter: Pittsburgh Chapter's RingCentral Meeting - September: What's the Big Deal with Nano-scale Materials
September 17, 2020 from 7:00 pm to 8:00 pm Eastern U.S. Time Zone (UTC -4).
Dear ASM Friends,
The Pittsburgh Chapter of ASM International is inviting you to a scheduled RingCentral meeting
Nano-scale Materials Characterization
Materials characterization refers to processes by which a material's structure and properties are determined. Materials characterization is fundamental to an improved understanding of materials, which is fundamental to advancement in all field of technologies. Nanoscale materials often exhibit mechanical behaviors that are different from their bulk material counterparts. A wide range of specialized microscopy methods improve the understanding of properties of nanoscale structures, leading to new applications in energy, healthcare, and communications among many others. The September meeting of the Pittsburgh Chapter of ASM International will focus on a discussion of nano-scale materials characterization technologies, how such technologies will lead to improved understanding of materials, which will lead to advancements in other field of technologies.
- 7:00-7:10 Greetings and Introductions
- 7:10-7:30 Dr. Douglas Stauffer, "Advancing State of the Art in Nano and Micromechanical Testing: Exploring Regimes of Throughput and Analysis"
- 7:30-7:50 Dr. Scott Misture - In-situ study diffraction & scattering studies: correlated disorder in Au-Cu alloys
- 7:50-8:00 Panel Q&A
Topic and Speaker Information:
- Topic 1: 7:10 pm – 7:30 pm –Advancing State of the Art in Nano and Micromechanical Testing: Exploring Regimes of Throughput and Analysis
Abstract: Traditional, macroscale, mechanical testing occurs at scales far larger than required for materials advancements in modern devices and interface engineered materials. Two short studies are presented showing extremes in small scale mechanical testing.
The first study involves mapping of mechanical properties using high throughput indentation. Here, large arrays of indents, up to 106, are placed on a sample surface to map mechanical properties. This requires a corresponding increase in analysis methods, leading to AI algorithms that can give us insight into extended material behavior. With Ude Hangen, Bernie Becker, Ben Stadnick, and Eric Hintsala
The second study is a polar opposite in throughput, investigating fatigue crack growth in ultrafine grained materials involves in situ TEM testing, with continuous monitoring of crack and grain growth in the material. With Daniel C. Bufford, William M. Mook, S.A. Syed Asif, Brad L Boyce, and Khalid Hattar
Speaker: Douglas Stauffer, Ph.D.
Dr. Stauffer is the Senior Manager for Applications Development for the Hysitron product lines at Bruker Nano, Inc. In short, he manages the internal testing laboratory, engages in collaborations, and assists with sales related activities with respect to nanomechanical testing techniques. He works with a wide variety of professionals in his role, ranging from professors studying incipient events at very small length scales to industrial manufacturing of 300mm wafers for logic and memory.
His current research focus is on developing new techniques for understanding structure and processing relationships with regards to nanomechanical performance. These relationships and techniques can then be applied to a wide range of applications that include both applied and fundamental studies for assessing component and microstructure capabilities to resist failure. These techniques include in and ex situ testing and the development of in operando type experiments, to gain insight into the role that plasticity and fracture play in the varying failure regimes under operating conditions. He has more than 25 peer reviewed publications, 20 peer reviewed proceedings, and 3 patents
Douglas received his Ph.D. in Materials Science from the University of Minnesota in 2011. He then joined the R&D department as a Senior Staff Scientist working in instrumentation and applications at Hysitron. Hysitron was acquired by Bruker Nano in January 2017.
- Topic 2: 7:30-7:50 In-situ study diffraction & scattering studies: correlated disorder in Au-Cu alloys
Abstract: Detailed information on atomic scale ordering and nanostructure in order-disorder phase transitions is not easily accessible when using only traditional diffraction analysis, a result of the "nanostructure problem." The depth and inverse nature of this problem requires complex modelling to fit observed data, so that the structure – processing – property relationships can be leveraged to tailor material performance.
The talk will demonstrate how careful treatment of lab and synchrotron diffraction and total scattering data can be used to understand not only formation of intermetallics but also to quantify nanoscale clustering. The latter is critical to understanding the catalytic properties of the resulting materials. Detailed Rietveld fitting of high-resolution diffraction data gives quantitative information on microstructure and atomic structure, highlights subtle and easily missed features in the XRD pattern, and emphasizes the need for total scattering measurements. Tuning an evolutionary algorithm for global optimization of large atomic ensembles against observed pair distribution functions (PDF) allows us to quantify chemical short-range order. These models are further refined using density functional theory (DFT) to elucidate the subtle bond length fluctuations associated with correlated disorder.
Speaker: Dr. Scott T. Misture
Dr. Misture presently holds an Inamori professorship at Alfred University, having served on the faculty for 21 years. His earlier experience includes a few years at Oak Ridge National lab and time in Germany at Siemens Corporate Research. Misture's research interests center on understanding how structure and defects define the properties of electrochemically and catalytically active oxides and oxide-metal interfaces. He develops and applies advanced in-situ and in-operando characterization tools to understand the effects of structure at the atomic scale and nanoscale, primarily x-ray and neutron scattering. His research has focused on oxides for energy conversion, including materials for high temperature fuel cells, as well as photocatalysts and oxides for electrochemical charge storage and related catalytic applications.
Dr. Misture is engaged in the materials community as an editor for the Journal of Materials Research, past chair of the Board of Directors of the International Centre for Diffraction Data, and as a longtime officer and committee chair in the American Ceramics Society. He is also a member of the organizing committee of the Denver X-Ray Conference and holds or has held leadership positions in the American Crystallographic Association, the Materials Research Society, the National Academy of Sciences Committee on Crystallography and on advisory boards for neutron and synchrotron user groups and proposal evaluation panels. He also serves as Program Chair for three degree programs at Alfred University.
Virtual Meeting Information:
Pittsburgh Chapter is inviting you to a scheduled RingCentral meeting.
Topic: ASM Pittsburgh September Meeting
Time: Sep 17, 2020 07:00 PM tz.US/Eastern
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About the Pittsburgh Chapter of ASM International and the Great Pittsburgh Region
Celebrating its 100th Anniversary this year, the Pittsburgh Chapter of ASM International is one of the oldest and largest chapters. It currently serves over 500 members from Western Pennsylvania, Eastern Ohio, and Northern West Virginia (the "Greater Pittsburgh Region").
The Greater Pittsburgh Region has abundant natural resources including petroleum, natural gas, coal, fertile soils, abundant minerals, ample water supplies and copious forests, but high costs of transportation cost has historically limited the exportation to a limited number of goods that could withstand high freight costs. Thus, the economy of this region has traditionally been built upon developments of new technologies to utilize local natural resources. One of the earliest industries in the Greater Pittsburgh Region was shipbuilding, starting with flatboats built from walnut trees that were common along the banks of the Monongahela, which quickly progressed into shipbuilding of steamboats and ocean-going vessels made from wood and iron. Pittsburgh soon become known as iron city, taking advantage of the most productive coalfields in the country to fuel a growing iron foundry sector. The first oil well in the world was drilled in Western Pennsylvania to begin the rise of the U.S. petroleum industry. Development of the iron and steel industry led to the prominence of Pittsburgh as the center of the steel industry in the United States. Meanwhile, by the mid-nineteenth century, more than one-third of all U.S. glass was produced in Pittsburgh, and by the twentieth century, Pittsburgh was a leader in the development of processed foods to take advantage of its plentiful agricultural production but difficulty of exportation of raw agricultural goods.
Currently, the Greater Pittsburgh Region has a diversified economy with strengths in natural gas production, advanced manufacturing, technology and medical fields.
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