Ali Javey (Advisor)

We present a wearable platform for on-skin chemical sensing that enables continuous and real-time monitoring of metabolic activity. The device is designed to operate robustly during physical activities and under varying skin conditions, providing reliable measurements that may be useful for personalized health assessment.

Project is currently funded by: Industry Sponsored Research

We have been developing sweat sensors to analyze physiological and metabolic health information, such as sweat rate, glucose levels, pH, and various electrolytes, from any surface on the body surface where sweat glands are present. However, the stiff sweat sensors developed so far struggle to detect subtle signal changes, especially on soft skin. This is due to a mechanical mismatch between the rigid sweat sensor and the pliable skin, which can lead to motion artifacts and delamination of the patch from skin. Specifically, the stiff sensor cannot easily stretch along with the...

Normal scenes captured by cameras involve light intensities spanning more than five orders of magnitude, which is often taken care of with auto-exposure/multiple exposures in high dynamic range (HDR) imaging technologies. Such technologies assign one or several uniform exposure levels and dynamic ranges for all pixels in the image, significantly squeezing the data precision for dimmer regions, causing fundamental information loss at the photodetection stage.

Ideally, each detector should independently decide its tradeoff between responsivity and speed. For...