Platelets triangular

The platelets comprise an array of parallel micro channels with microstructured triangular-shaped headers at both ends. In the headers holes form conducts to the external feed fluid supply. Optimization of the shape of the header with respect to flow equalization was the topic of various simulation studies [52, 53]. 

In many cases the octahedron based structures appear with a truncation R = 75%. In that case they can be described as platelets. On the other hand the fact that the growth rate of the various crystal faces might be different generates irregular shaped platelets. A particulary common shape are the triangular plates (shown in Fig. 8). These are the result of truncating a single tetrahedron with ill faces. 

Boric acid is a white solid that crystallizes from water as waxy platelets. The crystal structure of boric acid consists of triangular B(0H)3 molecules interconnected by hydrogen bonding into planar layers 3.18 A apart, (Fig. 20) [88]. 

Figure 23 TEM of InS platelets with triangular features inset, electron-diffraction pattern collected along the [0001] zone axis of a platelet...

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