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Inspired by the adhesive proteins in mussels,we report a novel strategy based on the use of the multifunctional biopolymer—polydopamine(PDA)[1] for constructing a functional shell-isolated nanoparticle(NP)-enhanced Raman spectroscopy(SHINERS)[2] probe with high sensitivity and selectivity.High wrapping tendency of PDA make feasible for achieving an ultrathin PDA coating wrapped on Au Nps.