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a SERS spectra of 10−5 M RB on different AgNWs@AgNPs substrates, S0, S1, S2, S3, S4. b SERS spectra of RB with two different substrates RB (10−5 M) (Sh: superhydrophobic counterpart of S4). c SERS spectra of RB at different concentration on flexible and superhydrophobic substrate. d Reproducibility of the SERS signals at twenty random sites (10−6 M)
