The fiber sensor. Credit: ETRI
The researchers, from Electronics and Telecommunications Research Institute and Konkuk University in the Republic of Korea, coated cotton and polyester yarn with a nanoglue called bovine serum albumin (BSA). The yarns were then wrapped in graphene oxide sheets.
The graphene sheets stuck very well to the nanoglue – so much so that further testing showed the fabrics retained their electrical conducting properties after 1,000 consecutive cycles of bending and straightening and 10 washing tests with various chemical detergents. Finally, the graphene oxide yarns were exposed to a chemical reduction process, which involves the gaining of electrons.
The reduced-graphene-oxide-coated materials were found to be particularly sensitive to detecting NO2, a pollutant gas ...
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