World Map Etched on a Tiny Silicon Chip

Researchers at Ghent University in Belgium have etched a tiny world map–on a scale of 1 trillion—on to a optical silicon chip. They reduced the earth’s 25,000-mile circumference at the equator down to 40 micrometers or about half the width of a human hair to fit it on the chip.

The map is put in a corner of a chip designed for a project at the University’s Photonics Research Group.

The idea is to successfully demonstrate scale reduction so complex optical functions can be included in a single chip. Such a chip could find applications in telecommunications, high-speed computing, biotechnology and health care.