HAADF图像常常与能量色散X射线分析(EDX)、电子能量损失光谱(EELS)等技术结合使用,以获得更全面的固态样品化学信息。 综上所述,HAADF图像是一种高分辨率、高灵敏度的成像技术,在材料科学领域具有广泛的应用前景。
除了FIB的溅射功能外,还可以使用SEM的所有成像和分析功能,如SE、BSE、CL、EBSD和EDX。与STEM探测器组装在一起的,可在30kV电压下获取STEM图像;从而获得具有高空间分辨率的Z衬度图像,类似于低电压下的TEM。 三维成像和三维显微分析是FIB-SEM双束的重要特征,因为它...
Fig.6在原子尺寸展示LFP/C及Mn掺杂LFP/C。Mn掺杂不会影响LFP的橄榄石型晶体结构。 Figure 6(a)-(b)HAADF-STEM micrographs of LFP surface and bulk, oriented along [010] zone axis.(c)Atomic model of the Olivine structure of LFP oriented in [010] zone axis.(d)-(f)Analogous HAADF-STEM microgr...
HAADF-STEMEDSEDXsemiconductortomographymultislicesimulationIn recent years significant progress has been made in moving towards a more quantitative analysis of electron microscope images. Computational simulations have played a large part in this evolution, allowing insights into the image formation process ...
有大神了解HAADF 和EDX 的吗？说的是L层电子和M层电子，EDS能量很高，无法区分价电子。主要是用高能...
最近想做一个HAADF-STEM表征,想辨别不同元素的形貌及分布。但是这两种元素原子序数接近,普通TEM无法分辨。SEM+EDX感觉分辨率太低。从一篇文献看到如下结果图,就是利用HAADF-STEM表征,不知道可以达到这种效果吗?尤其是怎样可以做到彩色分布图?[ 来自小组 盖德催化 ] 展开 ...
In this work, we investigate through aberration- corrected HAADF-STEM imaging and complementary energy-dispersive X-ray (EDX) the Bi distribution in GaAs/GaAs1 − xBix/GaAs heterostructures grown by mo- lecular beam epitaxy (MBE) at a substrate temperature close to 340 °C. We also studied...
The analysis at low magnification of high-angle annular dark-field scanning transmission electron microscopy images, corroborated by EDX analysis, revealed planar defect-free layers and a non-homogeneous Bi distribution at the interfaces and within the GaAsBi layer. At high magnification, the qHAADF ...
采用HAADF-STEM考察,首次从原子尺寸上揭示了LFP在循环过程中容量/电压衰退的机制是由于表面非晶化,出现非活性、不可逆、无定型态FePO 4,而且随着循环次数的增加其还会大量增加并进一步局部延伸到LFP的体相。DFT计算表明,锂离子在FePO4中的扩散系数仅为2.5×10-22cm2s-1。非活性、无定型态FePO 4的出现会导致LFP...
Keywords: 3D-observation, HAADF-STEM, eucentric specimen stage, double spherical fulcra, cylindrical specimen, FIB, ZnO particle, Cu metallization, 3D-EDXKoguchi, M 1Oxford University PressJournal of Electron Microscopy