It doesn't take much to tear off their flimsy mask of sweetness and light.

CENTERFORSECURITYPOLICY: Unmasking the "International Community"

In a process similar to printing a photograph, engineers beam high-powered light through a mask-like image of the chip, creating a duplicate on a silicon wafer.

FORBES: Trick of the Light

The material is exposed to ultraviolet light through a mask patterned with the outlines of cells.

ECONOMIST: REPORTS

This involves shining light through a patterned mask and on to the surface of a chip, so as to change the chemical properties of the exposed parts of that chip.

ECONOMIST: Transistors: A tall story | The