Transmission electron lattice imaging

Figure 3.23. Transmission electron microscope image showing a 2D hexagonal superlattice of Fe-Pd alloy nanoparticles. Image (b) conhrms that each nanoparticle consists of only one type of crystal lattice. Reproduced with permission from Chem. Mater. 2004, 16, 5149. Copyright 2004 American Chemical Society.

Figure 9.9 Cross-sectional transmission electron microscopy images of two Au/DIP/silicon oxide hetero-structures. While the An contact prepared at (a) -120 °C and a rate of 23 A/min exhibits rather weU-defined interfaces, the An contact prepared at (b) 70 °C and a rate of 0.35 A/min shows strong interdiffusion. Note that individual lattice planes of the DIP film can be resolved. Figures by courtesy of A. Durr and from Ref. [86] with permission.

Figure 31.8 (a) Transmission electron microscopy images of 7 nm nanocubes self-organized into cubic superlattices, (b) Electron diffraction pattern revealing base-centered cubic (bcc) structure of Fe(0) and the selective orientation of the nanocubes, (c) 2D assemblies obtained after dissolution of the super lattices. 

FIGURE 1.57 Transmission electron microscopy image of strongly activated anthracite showing pores formed by single aromatic layers (arrows). (From G.R. Millward and D.A. Jefferson. Lattice resolution of carbon by electron microscopy. In Chemistry and Physics of Carbon 14 (P.L. Walker Jr. and P.A. Thrower, eds.) Marcel Dekker, New York, 1978, 1-82. With permission.)... 

FIGURE 1.2 High-resolution transmission electron microscopy image of a supported Ru catalyst for ammonia synthesis recorded at 552°C and 5.2 mbar in a gas composition of 3 1 Hj/Nj. A Ru particle with a well-formed lattice and surface facets is seen on an amorphous support consisting of BN. A Ba-O promoter phase is observed on top of the Ru particle. Taken from Hansen et al. (2001) with permission from The American Association for the Advancement of Science. 

Native malaria pigment is a highly ordered crystalline substance. This order is shown in the transmission electron micrograph image shown in Figure 8 (39), which indicates that there is a distinct preferred axis for growth and that the lattice planes are separated by ca. 9 A. 

Figure 8. Transmission electron micrograph image of native malaria pigment crystals extracted from Plasmodium bevQhei showing the direct resolution of the lattice planes separated by 8 A.

A progressive etching technique (39,40), combined with x-ray diffraction analysis, revealed the presence of a number of a polytypes within a single crystal of sihcon carbide. Work using lattice imaging techniques via transmission electron microscopy has shown that a-siUcon carbide formed by transformation from the P-phase (cubic) can consist of a number of the a polytypes in a syntactic array (41). 

High Resolution Transmission Electron Microscopy (HRTEM, Philips CM20, 200 kV) was applied to get structural and nanotextural information on the fibers, by imaging the profile of the aromatic carbon layers in the 002-lattice fringe mode. A carbon fiber coated with pyrolytic carbon was incorporated in epoxy resin and a transverse section obtained by ultramicrotomy was deposited on a holey carbon film. An in-house made image analysis procedure was used to get quantitative data on the composite. 

Figure 3.3.5 shows a high-resolution transmission electron micrograph showing a close-up view of a part of a CdS particle. One may find that the particle consists of randomly oriented crystallites, as is obvious from the clear lattice image of each... 

Lattice imaging by high resolution transmission electron microscopy (HRTEM) of fibrous manganese(IV) oxide minerals demonstrated the exis-... 

FIGURE 2.15 Transmission electron micrograph and lattice fringe images for VGCF. (Courtesy of Prof. M. Endo, Shinshu University, Nagano, Japan. With permission.)... 

Using transmission electron microscopy the lattice fringe image can be seen. Also the scanning electron microscopy image showed that the montmoriilonite layer structures still remained after Si-heterostructure and no occluded clay by SiOj is observed. The results further indicate the expansion of the basal spacing. 

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