The gratings themselves were so small that the dimensions had to be confirmed with atomic force microscopy.

FORBES: Scientists Trap a Rainbow In a Plasmonic Surface

This little miracle involves using tiny chip-mounted diffraction gratings and laser light passed over them via a scanning mirror.

FORBES: What's Coming

The light from the lines is directed to the appropriate eye using either tiny lenses or diffraction gratings over each pixel (the dots of which the picture is composed).

ECONOMIST: Monitor

The holding-down bolts of twelve boilers and three triple-expansion engines, unintended to hold such weights from a perpendicular flooring, snapped, and down through a maze of ladders, gratings and fore-and-after bulkheads came these giant masses of steel and iron, puncturing the sides of the ship .

NEWYORKER: Unsinkable