High-Resolution Micrographs

Fig. 11 Formation of crystalline 3D super-lattices of tin nanoparticles a TEM view of a facetted super-crystal b SEM image showing particles included into a super-crystal as well as the organic surrounding c High resolution micrograph showing the alignment of the tin atomic planes inside the super-structure...

Figure 6. High-resolution micrograph together with corresponding scalar structural drawing, computed image, and appropriate diffraction pattern showing structural resolution of BigWgOg with some Bi2W3012 intergrowths (24).

Figure 2. These high-resolution micrographs show how a so-called x-ray amorphous, nonstoichiometric molybdenum sulfide catalyst exhibits structural (as well as compositional) heterogeneity. Amorphous, quasi-crystalline, and crystalline regions coexist at the ultramicro level (18,).

Malm JO, O Keefe MA (1996) Deceptive lattice spacings in high-resolution micrographs of metal nanoparticles. Ultramicroscopy 68 13-23... 

Figure 3 High resolution micrographs of the 2 wt.% Rh-PLC (A) and 5wt. % RI1/AI2O3 (B) catalysts before the catalytic tests (magnification 400,000x). 

Fig. 5. High resolution micrograph and microdififraction patterns (top) and microanalysis (EDX) (bottom) of two Pt/Rh particles 1 and 2 supported on a carhon film. The Cu signal in the EDX analysis is caused by the Cu grid. Courtesy of B. Tesche, Max-Planck-Institut fur Kohleforschung, Mulheim, Germany.

A high-resolution micrograph of a stimulated parietal cell after inhibition by radioactive omeprazole, showing the localization of the binding of this PPI exclusively to the active secretory canaliculus. The dark grains indicate the covalent binding of acid-activated omeprazole to the pump in the secretory canaliculus. 

High resolution micrographs (figure 9) show some very small disordered domains in the peak damage region, whereas under same conditions, SiC is completely amorphous. The size of the disordered region is of the order magnitude of the size of the cascade (few nm), and dislocations are observed in these area. 

In practice, the occurrence of defects along the dislocation lines (kinks, jogs, point defects,. ..) makes the interpretation of high-resolution micrographs difficult and hazardous. 

Figure 8.2 (a,c) Overview transmission electron microscopy images and (b) high-resolution micrograph of crystalline Zr02 nanoparticles obtained via the hydrothermal treatment of zirconium salts [46]. (Reproduced from Ref [45], with kind permission of the American Ceramic Society). 

Fig. 10. High-resolution micrograph of ultrathin section of E. coli B with an adsorbed bacteriophage T2. (260,000x)...

Their formation is certainly due to the presence of a high density of defects in the structure, clearly visible in high resolution micrographs as an apparent distorsion of the lattice planes (figure 4). These mesopores seem not to be connected to the exterior of the crystals as indicated by the catastrophic desorption at P/Po about 0.42. 

Malm J O and O Keefe M A, Deceptive "lattice spacings" in high-resolution micrographs of metal nanoparticles Ultramicroscopy, 1997 68 (1) 13-23. Stadehnann P A, EMS - a software package for electron diffraction analysis and HREM image simulation in materials science . Ultramicroscopy, 1987 21 (2) 131-145. 

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