Gold decoration transmission electron

The surface topography of the partially oxidized specimens is examined, with low resolution, using interference-contrast microscopy and at high resolution by means of the gold-decoration technique 177, 180) in conjunction with transmission electron microscopy. 

Transmission electron micrographs of two-step PS-carbon replicas taken from the surfaces of gold decorated samples deformed to the various values of draw ratio and containing 40 wt.% of modified chalk are presented in Fig. 6. Fig. 6a) shows a void around a filler particle in the early stage of deformation, the intermediate stage of deformation is shown in Fig. 6b), while the situation just before the sample fracture is presented in Fig. 6c). Presence of unoriented fraction of polymer matrix at the pole sides of voids and its decrease with the draw ratio, being in agreement with the theoretical predictions, is well documented by the above data. 

Fig, 6. Transmission electron micrographs of two-step PS-carbon replicas from the surfaces of gold decorated samples, a) initial, b) intermediate, c) final stages of deformation, Modified filler contents - 40 wt.%. 

Scanning electron microscopy (SEM) examinations, [29] of the macroscopic morphology of dissolution were then substantiated by transmission electron microscopy (TEM) pictures of gold-decorated surfaces [30]. The better resolution, even though not truly atomic, allowed an estimate of x and Xj and of their dependence on the dissolution rate as shown in Figure 4. The surface concentration of kinks (XjX ) is an exponential function of the potential with an exp(F /i 7)... 

Figure 2. Transmission electron micrograph of a longitudinal section through a rat soleus muscle exposed to toxin in vivo and then labelled indirectly. The dark spots (arrows) mark silver enhanced gold particles decorating the 2° antibody. Scale bar = 500nm.

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