Two-dimensional MXene materials are another important two-dimensional material that has attracted much attention after graphene. MXene has triggered a wide range of research interests and explorations due to its excellent metallic conductivity

good hydrophilicity

and excellent flexibility. Flexible sensors were prepared by adsorbing Ta

4

C

3

nanosheets onto experimental filter paper using the immersion method. The flexible sensor can measure the Raman signals of R6G

CV and MB organic dye molecules with the lowest detection limits of 10

-6

M

10

-5

M and 10

-5

M

respectively

and has good homogeneity and time stability

which can be applied to the detection of samples on complex and irregular surfaces.