Sensor-based passive RFID tags have been on the market for just a few years, but according to U.K.-based market-research firm IDTechEx, they have accomplished sufficient growth in niche markets that ...

The Misfit Shine is an example of a partially passive wearable sensor. The future of sensors won't be handheld devices like Star Trek's tricorder. It will be invisible sensors in your shoes, ...

Optical sensors can quantitatively analyze chemical and biological samples by measuring and processing the optical signals produced by the samples. Optical sensors based on infrared absorption ...

Automotive and healthcare companies are among those piloting a passive RFID sensor transponder that enables the detection of moisture without requiring a battery. EM Microelectronic‘s em|aura-sense is ...

Researchers at the Georgia Institute of Technology have created a passive motion/contact sensor that detects motion using only sound. Without electricity, electronics, or batteries. The sensors are ...

A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors.

“We wondered whether we could repurpose RFID tags to do battery-free sensing and tracking,” says Nagarjun Bhat, a Ph.D. student in electrical engineering and lead author of a new study. Data is power.

In a recent study published in Scientific Advances, researchers created a bioresorbable, cordless, passive sensor that monitors pH locally and detects stomach leakage early on. Study: Bioresorbable, ...

Prof. Ramaswamy Nagarajan from the department of plastics engineering at UMass Lowell has developed a new type of strain sensor suitable for wirelessly monitoring the mechanical deformation in tension ...