Iliescu Daniel, Baker Ian, Chang Hui
Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, USA.
Microsc Res Tech. 2004 Mar 1;63(4):183-7. doi: 10.1002/jemt.20029.
Knowing the orientations of the ice crystals in a polycrystalline aggregate is essential for understanding and modeling the flow of naturally occurring ice. Here we show, for the first time, that the orientation of crystals in polycrystalline ice can be determined with a higher angular and spatial resolution and more rapidly than any currently used method by using electron backscatter patterns (EBSPs) in a cold-stage equipped scanning electron microscope. We also present an orientation image map constructed from EBSPs, and discuss possible applications of the technique for ice. The results indicate that obtaining EBSPs and orientation images from other frozen water-containing materials, such as clathrate hydrates, may also be possible.
了解多晶聚集体中冰晶的取向对于理解和模拟天然冰的流动至关重要。在此，我们首次表明，通过在配备冷台的扫描电子显微镜中使用电子背散射图案（EBSP），可以比目前任何使用的方法以更高的角度和空间分辨率且更快速地确定多晶冰中晶体的取向。我们还展示了由EBSP构建的取向图像地图，并讨论了该技术在冰方面的可能应用。结果表明，从其他含冷冻水的材料（如笼形水合物）中获取EBSP和取向图像也可能是可行的。
