TEM images

Fig. Vni-3. (a) Atomic force microscope (AFM) and (b) transmission electron microscope (TEM) images of lead selenide particles grown under arachidic acid monolayers. (Pi Ref. 57.)...

The history of EM (for an overview see table Bl.17,1) can be interpreted as the development of two concepts the electron beam either illuminates a large area of tire sample ( flood-beam illumination , as in the typical transmission electron microscope (TEM) imaging using a spread-out beam) or just one point, i.e. focused to the smallest spot possible, which is then scaimed across the sample (scaiming transmission electron microscopy (STEM) or scaiming electron microscopy (SEM)). In both situations the electron beam is considered as a matter wave interacting with the sample and microscopy simply studies the interaction of the scattered electrons. 

Figure 2 Bright-field TEM image of polyether sulphone inclusions (dark objects see arrows) in a polystyrene matrix.

Fig. 26. High-resolution TEM images of bent and twisted carbon nanotubes. The length scales for these images are indicated [199].

Fig. 11. The sealed lip of a PCNT heat treated at 2800°C with a toroidal structure (T) and, (b) molecular graphics images of archetypal flattened toroidal model at different orientations and the corresponding simulated TEM images.

Tubes with diameters larger than 2 nm usually exhibit defects, kinks, and twists. This is illustrated in the TEM image of several relatively large nanotubes shown in Fig. 3b. The diameter of the tubes seems to vary slightly along the tube axis due to radial defor-... 

Fig. 11. TEM images of Co-SiO catalyst surface after different exposure times to acetylene at 700 C (a) 1 minute (b) 5 minutes and (c) 20 minutes.

Fig. 6. above) Molecular graphics images of an archetypal flattened toroidal model of a nanotube with n = 5 and m = 4 at three different orientations (0, 5, 10, 15°) in a plane perpendicular to the paper, below) Resulting simulated TEM images of the nanotube at the above orientations to the electron beam note that even the spring onion-like bulges at the ends are reproduced. 

Fig, 1, (a) A cross-sectional TEM image of a bundle of buckytubes (b) an HREM image of a single bundle of bucky-lubes with their axes parallel to the bundle axis. 

Fig. 6. Transmission electron microscope (TEM) image of MWCNT with the open end. The cap of the tube was removed using the purification process,...

Fig. 7. TEM image of SWCNT growing radially from a La-carbide particles [10b].

Fig. 6. (a) Medium and (b) high magniticalion TEM images of a partially intercalated CNTs [14]. 

Fig. 2. (a) (b) Transmission electron microscopy (TEM) images of as-grown VGCFs (broken portion) with the PCNT core exposed field emission-type scanning electron microscopy (FE-SEM) image of (c) as-grown and (d) heat-treated VGCFs (broken portion) at 2800°C with PCNT (white line) exposed [20],... 

Fig. 2. TEM image of a CNT obtained by CVD of 2-methyl-1,2 -naphlhylketone on a vacuum-evaporated nickel film (5 nm in thickness) at 700°C.

Fig. 3. TEM images of CNTs obtained by CVD of nickel phthalocyanine on a quartz substrate at 800°C the bottom of the tube (right) and tip of the tube (left).

Zheng Y, Lin Z, Zakin JL, Talmon Y, Davis HT, Scriven LE (2000) Cryo-TEM imaging the flow induced transition from vesicles to threadlike micelles. J Phys Chem B 104(22) 5263-5271... 

In the transmission electron microscopy (TEM) images, the starch nanoplatelets (SNPs) are believed to aggregate as a result of hydrogen bond interactions due to the surface hydroxyl groups [13] (Fig. lA). Blocking these interactions by relatively large molecular weight molecules obviously improves the individualization of the nanoparticles. The acetylated starch and cellulose nanoparticles (SAcNPs and CelAcNPs) appeared more individualized and monodispersed than their unmodified counterparts with a size of about 50 nm (Fig. IB C). 

Fig. 1. TEM images of (A) SNPs taken from reference no. 16 (B) SAcNPs and (C) CelAcNPs...

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