of November.  The image, shown below, shows the transparent polymer coating on the inside of an aluminum beverage can.  This coating protects the can from being etched by the acidic beverage and likewise prevents contamination of the beverage by the aluminum.

Phase imagine shows that the surface principally consists of two or three different materials.  Fine bumps selectively decorate the discontinuous phase (bright areas).  Sample courtesy of O’Malia’s Grocery.

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