Shuravin N S, Dolganov P V, Dolganov V K
Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow Region 142432, Russia.
Phys Rev E. 2019 Jun;99(6-1):062702. doi: 10.1103/PhysRevE.99.062702.
Freestanding smectic films give a unique possibility to study two-dimensional coalescence. We report experimental investigations in freestanding films and detailed analysis of coalescence of islands, circular regions of larger thickness than the surrounding film. The driving force of island coalescence is the dislocation tension on the boundary between the island and the film. The obtained experimental results enable one to perform complex analysis of two-dimensional coalescence in Stokes regime and compare it to theoretical predictions. The applicability of scaling arguments for the description of the peculiarities of domain dynamics is demonstrated. The whole process of coalescence is well described by the analytical solution adapted to our case of islands in freestanding smectic films.
独立的近晶相薄膜为研究二维聚并提供了独特的可能性。我们报告了对独立薄膜的实验研究以及对岛状物（厚度大于周围薄膜的圆形区域）聚并的详细分析。岛状物聚并的驱动力是岛状物与薄膜边界上的位错张力。所获得的实验结果使人们能够对斯托克斯 regime 下的二维聚并进行复杂分析，并将其与理论预测进行比较。证明了标度论证在描述畴动力学特性方面的适用性。聚并的整个过程可以通过适用于我们独立近晶相薄膜中岛状物情况的解析解很好地描述。
