Sweat sensor monitors metabolites to detect gout, metabolic and other disorders

Caltech’s Wei Gao has developed a wearable sensor that monitors metabolites and nutrients in blood by analyzing sweat. Previously developed, less sensitive, sweat sensors mostly target electrolytes, glucose, and lactate. Gao develops devices based on microfluidics, which minimize the influence of sweat evaporation and skin contamination on sensing accuracy.  Previous microfluidic-based wearable sensors were mostly fabricated with a […]

Wireless, wearable sticker adds a sense of touch to VR

John Rogers, Yonggang Huang and Northwestern colleagues have developed an “epidermal VR” system that adds a sense of touch to any virtual reality experience. The device incorporates a distributed array of 32 individually programmable, millimeter-scale actuators, each of which generates a discrete sense of touch at a corresponding location on the skin. Each resonates most strongly […]

Silk patch measures 6 biomarkers in sweat

Wenya He, Yingying Zhang, and Tsinghua and Northwest School colleagues  have developed a silk-based wearable patch which measures glucose, ascorbic acid, lactate, potassium, sodium ions and uric acid concentrations in sweat. Sensors are embedded in a woven graphite-silk fabric. Conductivity is enhanced using graphite doped with nitrogen atoms. The flexible patch is applied to the […]

3D printed skin, with blood vessels

Pankaj Karande and Rensselaer Polytechnic Institute colleagues have developed 3D printed living skin, with blood vessels. which could integrate with host cells in grafts. Until now, a significant barrier to integration has been the absence of a functioning vascular system. Karande previously made two types of living human cells into “bio-inks,” and print them into a skin-like […]