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The generation of graphene on the surface of food helps to develop edible sensors

during the Spring Festival, dumplings are an essential food. Do you want to try dumplings that can print curves and data reports with graphene patterns? A new technology developed by American and Israeli researchers has successfully generated graphene in food, which can be used to add edible electronic labels and sensors to food in the future

on a piece of bread, a little black owl is charming, and the "ink" that draws the pattern is graphene. This is the work of researchers from Rice University and other institutions in the United States using the "laser-induced graphene" technology. It is worth mentioning that the scientists did not use other graphene "ink" to paint, but directly used laser to "burn" graphene patterns on the food surface

graphene is a two-dimensional carbon nano material with excellent optical, electrical and mechanical properties. Jamestour, who participated in the study, said that any substance with the right carbon composition can be converted into graphene. The researchers used a commercial laser technology to heat the surface of the object and convert it into graphene foam. The laser-induced graphene technology can burn graphene patterns on the surface of various objects such as paper, cloth, food and so on. Whether the verified experimental machine is qualified or not

according to the researchers, in most cases, this multiple laser leads to two-step reactions: first, the laser converts the target surface into amorphous carbon for on-site metrological verification and calibration services of temperature measuring equipment in public places; Then when the laser penetrates again, the selective absorption of infrared ray converts amorphous carbon into graphene. It can be seen that wavelength plays a key role in it

researchers pointed out that due to the good conductivity of graphene, RFID codes can be added to the food surface through this technology to help consumers understand the origin, production date, transportation channel and other information of food. The laser-induced graphene Technology (3) covers a rubber sheet above the lower jaw and can also make an edible biosensor on the food surface to monitor E. coli and other potential microorganisms in food

this study was recently published in the monthly journal of the American Chemical Society nano

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