Edible electronics: How a seaweed second skin could transform health and fitness sensor tech: Scientists have used seaweed to develop biodegradable health sensors, which could be applied like a second skin

Scientists have developed biodegradable algae-based hydrogels for strain sensing devices -- such as those used in health monitors worn by runners and hospital patients to track heart rate -- using natural elements like rock salt, water and seaweed, combined with graphene. As well as being more environmentally friendly than polymer-based hydrogels, commonly used in health sensor technology, the graphene algae sensors perform strongly in terms of sensitivity.