2024年9月24日 · Here, by using in situ transmission electron microscopy (TEM), we uncover direct evidences on the nucleation and growth of FCC-Ti right in front of the crack tip in the α-Ti matrix.

High-resolution transmission electron microscopy is the most powerful technique for direct imaging of atoms in nanoparticles. A conventional TEM usually has an image resolution of better than 0.2 nm and is very capable of resolving atomic scale structures of nanoparticles.

HRTEM images are sensitive to many factors, e.g., crystal orientation, defocus, sample thickness and lens aberrations, and in order to properly interpret the images, we must do simulations

4 天之前 · HRTEM image (Fig. 5 F) shows the local deformation of the B2 lattice around the Ni 4 Ti 3 precipitates, which is in agreement with the results previously reported in conventional Ni-rich NiTi alloys [63, 64].

2009年1月1日 · HRTEM studies of compacts show allows to identify structure of nanocrystals of Cu 10 Zr 7 phase embedded in the amorphous matrix. DSC measurements show similar thermal effects such as glass transition and crystallization temperatures as in the powder indicating similar state of amorphization.

Static and in-situ high-resolution transmission electron microscopy (HRTEM) and three-dimensional near-coincident-site (NCS) atomic modeling were used to determine the atomic structure, growth mechanisms, and dynamics of massive transformation interfaces in a Ti-Al alloy.

2018年9月29日 · 高分辨透射电子显微术 (high resolution transmission electron microscopy，简称HRTEM或HREM)是相位衬度 (高分辨电子显微像的衬度是由合成的投射波和衍射波之间的相位差形成的，称为相位衬度 (phase contrast)。

The HRTEM enables the atomic structure of interfaces and defects to be determined routinely, reliably and with very high positional accuracy, thus providing better insights into the physical behavior of many nanostructured materials.

Download scientific diagram | High resolution transmission electron microscopy (HRTEM) images of TiO 2-PMMA nanohybrid thin films: (a) T60-B, (b) T60-C, (c) T60D and (d) T60-E. from publication...

Here is a HTEM picture of grain boundaries in BaTiO3, one of the most important electroceramic materials. Its lattice is of the Perovskite type and looks like this: The Ti atom is in the center and the O atoms on the face centers positions. The lattice is not exactly cubic but slightly elongated.