Energy & Green Tech

Scientists tap unused energy source to power smart sensor networks

The electricity that lights our homes and powers our appliances also creates small magnetic fields that are present all around us. Scientists have developed a new mechanism capable of harvesting this wasted magnetic field ...

Telecom

When WiFi is weak, send noise instead

When WiFi was designed, it was intended for high-speed data communications. The Institute of Electrical and Electronics Engineers (IEEE) set the standards for communications—that's the 802.11 protocol, a familiar number ...

Engineering

Medically monitoring premature babies with cameras

Researchers at EPFL and CSEM have developed a contactless and wireless camera system to continuously monitor the vital signs of premature babies. This system could replace skin sensors, which cause false alarms nearly 90% ...

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