What if the data shown on tags were embedded in the food we eat in the near future? No, it is not science fiction: this is the idea developed by some researchers at the James Tour laboratory of Rice University in Texas, working on the first smart edible tags containing graphene that can provide useful information about the food we eat.
Using LIG (which stands for laser-induced graphene), the researchers have been able to etch this type of graphene onto food like bread, potatoes and coconut. How does it work? Laser heats the surface of a material, creating a type of flaky, foamy and even edible graphene.
According to the working group, by continuing along this road, RFID codes will be inserted directly into food with useful information for consumers: the place of origin of food, how long it has ben stored, its best before date and also potential dangerous bacteria for human health.
These intelligent tags might light up and send a signal that indicates that food is not edible. In addition to food, laser-induced graphene can be etched onto paper, cardboard and fabric. It is not yet known when this edible evolution of smart tags will be launched on the market; in the meantime, to have an idea of the production process, watch the video!