Edge sharpening effect

The most important characteristics of this two-layer system is the so-called "edge sharpening" effect. During exposure, as Ag is doped into the Ge-Se layer, two other phenomena happen. The optical transmission of the Ag2Se film increases as Ag is depleted. This enhances the exposure in the exposed areas just as the case of photobleaching of conventional organic... 

Figure 15. Mechanism of edge sharpening effect. The diagram shows the profile of light intensity (I), photodoped silver concentration in GeSe film, and the concentration of silver remaining in the Ag2Se layer. (Reproduced with...

Edge sharpening effect to compensate for diffraction effects. 

In the razor example, the blades item has two potential failure modes shown—too dull and wrong angle, both with the same effects of shaving discomfort and an un-close shave. Potential causes of these failure modes are poorly sharpened edges, wear, corrosion, and deformed plastic spaces that position the blades. 

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