ON THE OUTSIDE, the Oura ring looks rather ordinary, indistinguishable from a chunky wedding band. But a faint green light that intermittently leaks out from the gap between finger and ring suggests ...

While technologies to measure water vapor loss do exist, they are large, cumbersome machines that largely reside within hospital settings. A new device that measures changes in water vapor, carbon ...

A multi-campus research team has developed a novel device for non-invasively measuring cervical nerve activity in humans. The device has potential applications for supporting more personalized ...

Embedded in cell phones, rings, bracelets or watches, the novel tools aim to make it easier to manage hypertension. But they must still pass several tests before hitting the clinic. By Matías A. Loewy ...

Engineers at Stanford University have created a small, autonomous device with a stretchable and flexible sensor that can be adhered to the skin to measure the changing size of tumors below. The ...

Seeking to address fluoride contamination in drinking water, chemical engineers have developed a portable and user-friendly device that can measure fluoride concentration accurately and reliably.

A laser Doppler vibrometer’s (LDV) real-time capability enables measurement times roughly six orders of magnitude smaller compared to any method that is based on strobe techniques or provides a ...

Primary performance data for passive fiber-optic devices is provided by spectral measurement of optical insertion loss (IL) and polarization-dependent loss (PDL). Often used to characterize optical ...