Crystallography at the nanoscale: planar defects in ZnO nanospikes

摘要: The examination of anisotropic nanostructures, such as wires, platelets or spikes, inside a transmission electron microscope is normally performed only in plan view. However, intrinsic defects growth twin interfaces could occasionally be concealed from direct observation for geometric reasons, leading to superposition. This article presents the shadow-focused ion-beam technique prepare multiple electron-beam-transparent cross-section specimens ZnO nanospikes, via procedure which readily extended other structures. In contrast with plan-view data same here viewing direction allows without By this method, coexistence two configurations wurtzite-type structure observed, namely [2 {\overline 1} 0]^{\rm W}/(0 1 1) and 3), were not identified during observations owing superposition domains. defect arrangement result coalescence twinning crystalline nuclei formed on partially molten Zn substrate flame-transport synthesis. Three-dimensional models interface structures have been derived are correlated investigations by simulation.