Gribb, Kelly, and Larson receive MRS Innovations in Materials Characterization Award
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Gribb, Kelly, and Larson receive MRS Innovations in Materials Characterization Award
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ye T. Gribb of DTE Research and Development LLC, and Thomas F. Kelly and David J. Larson of Cameca Instruments, Inc. have been honored with the MRS Innovations in Materials Characterization Award for their joint work on a local-electrode atom-probe tomograph. Gribb, Kelly, and Larson are cited for “the highly successful conception, design, fabrication, and commercialization of an ergonomic three-dimensional local-electrode atom probe (LEAP) tomograph that enables the determination of the local composition information, on an atom-by-atom basis, of metallic, semiconducting, ceramic and organic materials, on a subnanometer scale, in direct space, with high mass
tributions and developments in instrumentation, specimen preparation, and data interpretation relating to the atom probe technique. The instruments they developed enable microstructural characterization of complex materials to the atomic level. The development of their three-dimensional (3D) LEAP tomograph began as a concept in a research program at the University of Wisconsin, Madison, which was headed by Kelly. During 1993 to 1998, Kelly and Larson demonstrated the feasibility of the concept, fabricated local electrodes, and prepared microtip specimens that could take advantage of the local-electrode geometry. While the key concepts for the LEAP tomography were proven to work, the researchers had yet to build an operating instrument. Kelly founded Imago Scientific Instruments through which the prototype of a commercial LEAP tomography was designed and fabricated with Gribb serving as the The MRS Innovations in Materials Characterization Award will be lead designer. presented to (left to right) Thomas F. Kelly, Tye T. Gribb, and David Their instrument J. Larson at the 2011 MRS Spring Meeting in San Francisco. delivered the requisite advances need resolving power and signal-to-noise rato make an ergonomic atom probe totio, permitting the determination of small mography for materials research, nameconcentrations of all elements.” The rely: (1) high data collection rates (>106 atoms/min); (2) a large field of view search team will present an award talk (200 × 200 nm2); (3) high mass resoluat the 2011 Materials Research Society tion (better than 1 part in 1200 full-width Spring Meeting in San Francisco. The half maximum); and (4) microtip speciaward has been endowed by Toh-Ming mens that could be placed on an array of Lu and Gwo-Ching Wang. 36 silicon microrods, using a commerGribb, Kelly, and Larson made incial dual-beam focused ion beam microdividual and also joint innovative conT H E M AT E R I A L S G AT E WAY T M
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MRS BULLETIN
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VOLUME 36 • APRIL 2011
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www.mrs.org/bulletin
scope. With this instrument, what used to take weeks of data collection would now take minutes and the 200 nm field of view opened up the application space to technologically relevant structures such as transistors and multiphase metals and ceramics. The realization of the ergonomic 3D LEAP
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