A group of scientists from the University of Rice has developed a technology for applying graphene labels to various surfaces – in particular, food products. The secret is that almost any product containing carbon can be converted to graphene. As a “magic wand”, scientists used a defocused laser beam.
The objects for labeling were paper, cardboard, cork, coal, freshly-baked bread toast, coconut shell and potato peel.
A complex organic carbon-containing polymer lignin, which forms a graphene label under the influence of a laser, became a peculiar “ink” in this case.
According to scientists, graphene obtained by this method will find its application as an electrocatalyst of fuel cells, biosensors and RFID-tags. They will also be able to replace the traditional labeling of food and clothing.
Another unique quality of graphene sensors is the recognition of various microorganisms. For example, after finding an E. coli, such a label will start to glow.js.src = “&version=v2.8”; 'script', 'facebook-jssdk'));