Light Figures of Single Crystals of Silver

Abstract

Light-figure phenomena have been studied on single crystals of silver etched under various conditions, especially with the object of finding out light figures suitable for determining orientation by the light-figure method. Experimental results obtained are summarized in Table 1 of the text. It was found that clear {100}, {110} and {111} light figures, suitable for determining orientation were produced by silver crystals etched for a short time with such strongly oxidizing etchants as concentrated sulphuric acid (at 50∼60°C) and 50 percent sulphuric acid saturated with potassium bichromate.