Sandwich-like Ag@Cu@CW SERS substrate with tunable nanogaps and component based on the Plasmonic nanonodule structures for sensitive detection crystal violet and 4-aminothiophenol

It is critical in nano physics nowadays to fabricate a superior surface enhanced Raman scattering (SERS) substrate which provides the high-density ‘hot spots’ for obtaining the strong local electric field. A sensitive, large-scale and low-cost sandwich-like [email protected]@CW SERS active substrate was successfully fabricated by decorating the Cu and Ag nanoparticles on the cicada wing (CW) with uniformly-distributed nanopillars via a simple...