Los Alamos National Laboratory

Center for
Materials at Irradiation and Mechanical Extremes
A BES Energy Frontier Research Center

News & Highlights: Archive

Germann elected vice chair of APS Division of Computational Physics

Tim Germann (T-1, LANL) will serve on Program Committee
and chair Information Committee.

CMIME featured on YouTube!

A video providing an overview of CMIME hit YouTube on March 24, 2011.

Rollet named 2011 TMS Fellow

Anthony Rollett (MPA-CINT) was selected as 2011 TMS Fellow.

CMIME scientist co-editor for JOM special issue

Michael Demkowicz, team leader for CMIME's Metals team, was a Guest Editor for a special issue of the Journal of Materials (JOM) published in December 2010. The issue highlighted progress in experimental and modeling investigations of solid-state interfaces.

Thumbing through many materials textbooks, one finds diagrams depicting interfaces schematically as rather simple, two-dimensional and compositionally abrupt entities. While such schematics are convenient and often necessary simplifications, this JOM issue addressed how properties of real interfaces are fundamentally controlled by structures and compositions that may have great complexity at atomic and micron scales and are often three-dimensional.

Among the five invited articles, one was co-authored by Demkowicz, Engang Fu and Amit Misra (LANL), and Xinghang Zhang (TAMU). The article explained how differences in He trapping at Cu-Nb and C-V interfaces arise from differences in the atomic structures of these two interfaces, illustrated below. JOM is the journal of the Minerals, Metals, and Materials Society (TMS).

December MRS Bulletin highlights CMIME work

The cover image of the December 2010 MRS Bulletin special issue on structural metals at extremes is from the work of LANL scientist Tim Germann and collaborators on the MD simulation of shock response of nanocrystalline metals. Germann leads CMIME's High Strain Rate Deformation Team.

Mike Demkowicz, team leader of the metals team in the irradiation extremes thrust in CMIME, and Pascal Bellon, from the severe plastic deformation team of the mechanical extremes thrust in CMIME, co-authored an article on design of radiation-tolerant materials.

Amit Misra served as the Guest Editor of this special issue that overviews work in the emerging area of prediction and control of material response at extreme conditions of irradiation, shock, plastic deformation, temperature, etc.

The set of invited overview articles in this issue describe "top-down" and "bottom-up" synthesis methods to create nanostructured metals and composites that contain atomically designed interfaces that not only block dislocation slip but also attract, absorb, and annihilate point and line defects. These articles also highlight the critical role of multi-scale materials modeling and integration of modeling with experiments to understand the underlying physics at the fundamental level. Such multifunctional material systems are not just high in strength but also tolerant of damage at extremes of irradiation, temperature, and mechanical stresses, and hence have applications as structural materials in nuclear power and other energy, transportation and defense technologies. The exploration of these exceptional properties at extremes requires novel and unconventional methodologies, such as in situ experiments with high spatial and temporal resolution, complemented by simulation across multiple length and time scales.

In addition to guest editing this theme issue, Misra served as a 2009 Volume Organizer and was recently appointed a permanent member of the Editorial Board of the MRS Bulletin, one of the most widely recognized and highly respected publications in advanced materials research.

LANL awarded two Energy Frontier Research Centers
Solar- and nuclear-energy technology advancements from Los Alamos National Laboratory (LANL) could help the nation in its quest to capture viable sources of alternative energy, thanks to funding from the U.S. Department of Energy's Office of Science.

Los Alamos will be home to two new Energy Frontier Research Centers (EFRCs)-each designed to advance scientific research in alternative and renewable energy-through a five-year funding commitment by DOE. Forty-six such centers will be established nationwide at national laboratories, universities, nonprofit organizations, and private firms. The two LANL centers each will receive $3.8 million a year in funding ($19 million each total over the five-year term).

Read more about LANL's two EFRCS





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