Ink-jet dots form transistor spots | Science News

SUPPORT SCIENCE NEWS

Science News is a nonprofit.

Help us keep you informed.


News

Ink-jet dots form transistor spots

By
5:12pm, November 22, 2004

If microcircuits could be printed with ink instead of being sculpted into silicon, electronic smarts could adorn almost everything. When electronically tagged, even grocery items could, without being scanned, transmit prices to cash registers.

How about using ink-jet printers to do the job? Loaded with electrically active ink, printers can already make light-emitting diodes (LEDs) for display screens. But typical ink-jet dots, 20-50 micrometers (mm) wide, have been considered too big and runny for dense microcircuitry.

Not anymore. In the Dec. 15 Science, Henning Sirringhaus of the University of Cambridge in England and his team report new ways of printing better-defined dots that don't smear together.

The result? The first ink-jet-printed transistor circuits, with dot rows spaced only 5 mm apart.

This article is only available to Science News subscribers. Already a subscriber? Log in now. Or subscribe today for full access.

Get Science News headlines by e-mail.

More from this issue of Science News

[title_1]
From the Nature Index Paid Content