Seidman Group

[edit] Nugget

Three-dimensional LEAP tomographic reconstructions of Al–0.06 Sc–0.02 Tb and Al–0.06 Sc–0.02 Tm (at.%) aged for: (a) 10 minutes, and (b) 24 hours at 300 °C. Each reconstruction is divided into three sections, with Sc atoms only displayed in the leftmost section, rare earth (RE) atoms only displayed in the center section, and both Sc and RE atoms displayed in the rightmost section. After 10 minutes aging time, nanometer-sized RE-rich Al₃(RE_1-xSc_x) precipitates have formed. With continued aging to 24 hours, a core-shell structure is evident in the precipitates, with a RE-rich core surrounded by a Sc-rich shell.

(Courtesy: Matt Krug)

[edit] Announcements

• The Seidman Group welcomes Liza Plotnikov, a first year graduate student in the department. Liza has a B.S. in Materials Science and Engineering from MIT. She will be working on Nickel based super alloys.
• Congratulations to Chantal Sudbrack for her employment at the Structures and Materials Division at NASA Glenn Research Center in Cleveland, Ohio, where she will be studying turbine disk alloys in their Advanced Metallics Branch.
• The Seidman group welcomes new students Denise Ford, who will be doing numerical modeling of the electropolishing of niobium; and Daniel Cecchetti, who will be working towards a masters thesis.
• Congratulations to Chris Booth-Morrison on the successful defense of his thesis.
• Professor David Seidman has been chosen for the prestigious TMS Institute of Metals Lecture and the Robert Franklin Mehl Award for 2011, to be awarded at the 140th TMS meeting in San Diego, California.
• Congratulations to Chris Booth-Morrison on his B.J. Martin Fellowship.

[edit] Press

• Professor David Seidman is chosen for the prestigious David Turnbull Lecturer Award, December 3, 2008.
• Structural Materials Division Symposium: Advanced Characterization and Modeling of Phase Transformations in Metals in Honor of David N. Seidman: TMS (Minerals•Metals•Materials) 2009 Annual Meeting, San Francisco, California; February 15th to 19th, 2009.
• NUCAPT has been chosen as the profile of the day for 2007-10-08 by the Einstein@Home project. (APT analysis is highly interactive & so we have spare CPU cycles at night, which we donate to that project.)
• Ford's collaboration with NUCAPT has received a lot of press
• Danny Perea's article in Nano Letters is summarized by several press sources
• In Nature this week acknowledges The mechanism of morphogenesis in a phase separating concentrated multi-component alloy on the LKMC simulations of Ni-Cr-Al.
• Please give, won’t you? mentions the charitable contributions Rick has made to F/OSS on behalf of NUCAPT.
• ASM honors best in materials science and engineering tells of Professor David Seidman's receipt of the Albert Sauveur Achievement Award
• Zmanda Enhances Amanda Open Source Data Protection Software For Enterprise Use describes NUCAPT's backup system, which we use to protect our customer's data. Richard Karnesky is quoted.
• Redesigning the United States Navy with the Atom Probe is about the NUCu-150 steels studied by Dieter Isheim and others in the group.
• Northwestern adds to its Imago microscope describes NUCAPT's Laser enhancement.
• Atomic Imaging Turns 50 is the cover story in Chemical and Engineering News. It discusses the early history of Atom-Probe/Field-Ion Microscopy with Erwin Müller, as well as modern instrumentation such as the LEAP. Professor David Seidman is mentioned, as is Danny Perea's work on semiconductor nanowires.
• Researchers pursue blast-resistant steel using new tomograph describes one research application of the new instrument.
• Under the microscope is an article in the Northwestern Daily. It contains a couple of technical inaccuracies.
• Ford's collaboration with NUCAPT has received a lot of press
• Danny Perea's article in Nano Letters is summarized by several press sources