Etch figures

AtZ bild, n., etching figure, etched figure, boden, m. (Calico) discharge ground, -druck, n. discharge printing. 

The structures were etched using a time-multiplexed inductively coupled plasma etch (Figure 3.21). On the back side of such a stmctured silicon wafer holes were... 

The etching of an enantiomorphous pair of asn crystals in the presence of (/ )-aspartic acid and () )-A-methylasparagine is illustrated in Figure 12. Under these conditions, only the R crystals are etched (Figure 12a), whereas the S crystals dissolve smoothly (Figure 12b). The dramatic differences in the surfaces of the two enantiomorphous crystals after dissolution again make it possible to perform a manual Pasteur-type sorting of the R and S crystals with a quantitative enantiomeric yield. 

Honess, A. P. The Nature, Origin and Interpretation of Etch Figures on Crystals Wiley New York, 1927, p. 6. 

Figure 5.2. (a) Reflection-type photomicrograph showing step patterns due to growth observed on low-index (0001) face of hematite, (b) Phase contrast photomicrograph showing etch figures on (111) face of diamond. 

The earliest interest in surface microtopographs observable on crystal faces developed in the 1920s these observations were made using reflection-type microscopes on etch figures seen in natural mineral crystals [1], [2]. At that time. 

The combustor was composed of three fusion-bonded silicon wafers. Hydrogen was added to the air flow by 76 injector holes of 30 pm diameter. The mixture then entered the annular-shaped combustion chamber through 24 combustor inlet ports of340 pm diameter and left the device through a circular exhaust. The dimensions of the combustion chamber were 5 and 10 mm diameter at a height of 1 mm, which corresponds to a volume of 66 mm3. The fabrication of the device was performed by dry isotropic and anisotropic etching (Figure 2.42). 

SiN mask for KOH etching FIGURE 14.1 Schematic of integrated pressure sensor in bulk micromachining. 

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