Topic For Discussion
Grain boundaries do not fall into a single dimensional class. While their thicknesses are atomic-scale, their lateral dimensions can be many orders of magnitude larger. Therefore, the choice of a length scale for an experimental or theoretical investigation influences the type of information that can be obtained. The question at hand is, what advantages and limitations result from the choice of a length scale?
Your opinion on this topic is requested!
Please send your comment by email to Greg Rohrer at: gr20@andrew.cmu.eduI will post all appropriate opinions on this page.
Specific issues for consideration include:
• The ability to define all of the grain boundary degrees of freedom
• The ability to define the driving forces for grain boundary motion
• The ability to simultaneously determine grain boundary character and the properties of the boundary
• The ability to determine grain boundary chemistry
• The range of boundaries that can be studied
• The number of different boundaries that can be studied
At the meeting, the discussion will be led by Carol Handwerker. It will begin with statements by a panel of experts including Wayne King, LLNL, C. Barry Carter, UMN, Alain Karma, NEU, Stephen Garofalini, Rutgers.
The panel will discuss their experiences in the experimental and theoretical investigation of interfaces at the atomic and microscopic scale. The floor will then be open for comments. Both the panel and the audience can draw examples from the talks in previous sessions and those posted on this page.