Seidman Group

TEM and three-dimensional Atom-Probe reconstruction of a Si nanowire catalyzed with Aluminum. This work was featured in [Nature] http://www.nature.com/nature/journal/v496/n7443/full/nature11999.html.

Nugget

Structure and three-dimensional map of Al-catalysed Si nanowires. a, High-resolution cross-sectional TEMimage (left) displaying the interface between the catalyst particle and the nanowire. The right panel exhibits a close-up image of the interface (top), the fast Fourier transformof the image (middle), and the corresponding colour-filtered image (bottom, Al and Si regions correspond to red and blue regions, respectively) indicating that the interface is epitaxial. b, Three-dimensional APT atom-by-atom map of a nanowire grown at 410 uC. For the sake of clarity, only a limited number of atoms is displayed (2.53104 atoms of each element). Inset, a cross-sectional TEM image of an identical Si nanowire (scale bar, 40 nm). c, Si 50 at.% isoconcentration surface of an 80-nm-long segment of a nanowire determined by analysing a three-dimensional atom-probe tomographic reconstruction: left, side view; right, top view.

Announcements

• The Seidman Group welcomes Divya Jain, a first year graduate student in the department. Divya has a B.S. in Materials Science and Metallurgical Engineering from IIT.
• The Seidman Group welcomes Daniel Sauza, a first year graduate student in the department. Daniel has a B.S. in Materials Science and Engineering from MIT.
• Prof. David Seidman is elected fellow of the American Academy of Arts and Sciences (AAAS).
• Prof. David Seidman was recently named a 2010 MRS Fellow by the Materials Research Society (MRS).
• The Seidman Group welcomes Peter Bocchini, a first year graduate student in the department. Peter has a B.S. in Mechanical Engineering from the University of Delaware.
• 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.

Press

• An article feature APT work from Dieter Isheim and David Seidman was feature in Nature Press Release
• David Seidman is elected fellow of the American Academy of Arts and Sciences (AAAS).
• Professor David Seidman is chosen for the prestigious David Turnbull Lecturer Award, December 3, 2008.
  • Also covered by Northwestern
• 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