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Atom Probe Research in a Multi-User Facility

Tuesday, July 12, 2022

The MRL Central Research Facilities at the University of Illinois has trained thousands of experts in fabrication and analysis of new and novel materials and devices over the last 30 years. The mixture of analytical techniques provides a researcher correlated results between different size scales and different types of analysis. The addition of the LEAP 5000 XS in 2019 extended this analysis into atom-by-atom compositional information. This seminar will discuss challenges and solutions that have been implemented for using an atom probe in a shared user facility.

The Northwestern University Center for Atom-Probe Tomography (NUCAPT) has been providing instrumentation and know-how for atomic-scale imaging and analysis of nanostructured materials by atom probe tomography since its founding in 2004 by David Seidman and is managed by Dieter Isheim. Since 2017, NUCAPT operates a CAMECA LEAP 5000 XS. In this presentation we will address user access, basic principles of APT, and selected research applications.

Available on demand.
Passcode: 9TmZVf^m

About the presenters:

Timothy Spila

Timothy P. Spila, Ph.D.
Senior Research Scientist @MRL Central Research Facilities at the University of Illinois

Timothy Spila
received his B.S. in Engineering Science from the Pennsylvania State University in 1992 and his Ph.D. in Materials Science and Engineering under the advisement of Professor Joseph E. Greene from the University of Illinois in 2001. He has been a Research Scientist in the Materials Research Laboratory (MRL) at the University of Illinois since 2003 and is responsible for Secondary Ion Mass Spectrometry, Rutherford Backscattering Spectrometry, and Local-Electrode Atom Probe Tomography systems. In addition to instrument maintenance and the training of hundreds of new researchers on these techniques over the last 20 years, Tim has presented annual lectures on those techniques at the Advanced Materials Characterization Workshop. He has twice served as interim director of the MRL shared user facilities, which consists of over 100 instruments and is used by nearly 1000 researchers for about 100,000 hours annually.

Dieter Isheim

Dieter Isheim
Research Associate Professor, Department of Materials Science and Engineering @NUCAPT, Northwestern University

Dr. Dieter Isheim is a research associate professor of materials science and engineering at Northwestern University and manages the Northwestern University Center for Atom-Probe Tomography (NUCAPT). After receiving a doctorate in physics and physical metallurgy from the University of Göttingen, Germany, in 1995, he joined Northwestern University for postdoctoral studies in 1996 and was reappointed at Northwestern in the rank of research faculty in 2002. His research interests include phase transformations in solids, nano-structured materials, structure and local composition of interfaces in materials, and structure-properties relationships of materials. He specializes in high-resolution atomic-scale materials characterization and analysis, with a focus on atom-probe tomography, and has published more than 150 research papers.

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