Grain rotation

The twist grain boundary (TGB) phases predicted by Renn and Lubensky have been intensively studied in the few last years. The general structure of the TGB phase is shown schematically in Figure 5.4. Because the symmetry of the Sm A phase does not allow continuous helical twisting, the chiral superstructure is realized in a stepwise manner Small smectic grains rotate around a helical axis, while screw dislocations build the... 

D. Moldovan, D. Wolf, and S. R. PhiUpot. Theory of diffusion-accommodated grain rotation in columnar polycrystaUine microstructures. Acta Materialia, 49 3521-3532, 2001... 

K, E, Harris, V, V, Singh, and A. H. King. Grain rotation in thin films of gold. Acta Materialia, 46 2623-2633, 1998... 

Hanson, J.C., and Musser, W.N., 2003, An economic evaluation of an organic grain rotation with regards to profit and risk. Working P er 03-10, Department of Agricultural and Resource Economics, University of Maryland, College Park, MD. 

In Section 6.7, the influence of electric current on surface stracture evolution and grain rotation in tin thin films is studied. PecuHarities of mass transfer in two-phase alloys at electro- and thermomigration are highlighted in Section 6.8. 

Many studies have been focused on electromigration in metal interconnects [59-65]. However, these studies were based on electrically isotropic materials, such as aluminum or copper. The vacancy flux in such materials causes the inverse gradient of mechanical stress (a so-called back stress) mainly in the direction parallel to the current flow but not in the direction normal to it, hence there is no grain rotation. 

Electromigration-lnduced Grain Rotation in Anisotropic Conducting Beta Tin 175... 

For the standard equation for angular velocity of grain rotation, dB... 

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