Kato Mitsuro, Kawase Noboru, Kaneko Takeshi, Toh Shoichi, Matsumura Syo, Jinnai Hiroshi
Department of Macromolecular Science and Engineering, Graduate School of Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan.
Ultramicroscopy. 2008 Feb;108(3):221-9. doi: 10.1016/j.ultramic.2007.06.004. Epub 2007 Oct 22.
In our recent study, the complete rotation of a rod-shaped specimen during transmission electron microscopy (TEM) has been successfully carried out, yielding a truly quantitative three-dimensional (3D) structure of a ZrO(2)/polymer nano-composite. This result allows the further development of transmission electron microtomography (TEMT) for materials science. The diameter of the rod-shaped specimen was about 150 nm, which may not be statistically large enough to evaluate structural parameters, e.g., volume fraction of Zr nano-particles. Thus, it is preferable to image rods with larger diameters in 3D. In this study, several rod-shaped specimens whose diameters ranged from 150 to 530 nm were subjected to the "distortion-free TEMT". The maximum diameters, l, observable under 200 and 300 kV-TEMTs were, respectively, 460-470 and 600-670 nm (corresponding the maximum relative diameters, l/lambda (lambda: mean free path), were ca. 2.2 and 2.7-3.0).
在我们最近的研究中，已成功实现了棒状样品在透射电子显微镜（TEM）下的完整旋转，从而得到了ZrO(2)/聚合物纳米复合材料真正的定量三维（3D）结构。这一结果推动了用于材料科学的透射电子显微断层成像（TEMT）技术的进一步发展。棒状样品的直径约为150纳米，从统计学角度来看，这个尺寸可能不够大，不足以评估诸如Zr纳米颗粒的体积分数等结构参数。因此，对直径更大的棒状物进行三维成像会更合适。在本研究中，几个直径范围从150到530纳米的棒状样品接受了“无畸变TEMT”。在200千伏和300千伏TEMT下可观察到的最大直径l分别为460 - 470纳米和600 - 670纳米（相应的最大相对直径l/λ（λ：平均自由程）约为2.2和2.7 - 3.0）。
