Researchers have discovered a way to capture and harness energy transmitted by such sources as radio and television transmitters, cell phone networks, and satellite communications systems. By scavenging ambient energy from the air, a new device could power networks of wireless sensors, microprocessors, and communications chips.
The team used inkjet printers to combine sensors, antennas, and energy-scavenging capabilities on paper or flexible polymers. The resulting self-powered wireless sensors could be used for chemical, biological, heat and stress sensing for defense and industry; radio-frequency identification (RFID) tagging for manufacturing and shipping, and monitoring tasks in many fields including communications and power usage.
Also: Learn about a disposable chemical sensor and wireless communication device.
