Latest Issue of Science News


Batteries not included

New sensor uses movement to power transmission of wireless signals

Imagine charging your iPod just by shouting into it, or powering a blood glucose monitor with your pulse. Such technologies aren’t far off: In the latest rendition of tiny, energy-scavenging devices, scientists have developed a prototype sensor that produces enough electrical charge when flexed mechanically to transmit a wireless signal several meters.

Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.

This article is available only to subscribing members. Join SSP today or Log in.