Southeast University

Ruihua Fei

Xiangwei Zhao

A nanotag includes a gold core, the gold core is sequentially coated with a silver shell and a gold shell, and a Raman dye is arranged between the silver shell and the gold shell; further it discloses a making method for a high-stability SERS nanotag that includes the following steps: a. adding tetrachloroauric acid into ultrapure water, after boiling, quickly adding trisodium citrate, continuously boiling for a few minutes, stopping heating, and cooling; b. adding hexadecyl trimethyl ammonium chloride (CTAC) into product obtained in the step a, stirring, and then adding ascorbic acid and AgNO, and centrifugating and resuspending in the CTAC; c. adding CTAC into product obtained in the step b, stirring, adding a Raman dye, ascorbic acid and sodium hydroxide, injecting a mixture of tetrachloroauric acid and potassium iodide, and centrifuge the mixture and resuspending in the CTAC.

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Nanjing, China

Ruihua Fei