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Concept of SLIPSERS. (A) Schematic illustration showing the concept of SLIPSERS. Any analyte can be enriched to form a small aggregate, regardless of its interactions with the Au nanoparticles, facilitating subsequent SERS detections. (B) Visualization of the analyte enrichment process on SLIPS using luminescent PS spheres dispersed in ethanol. (Inset) Optical image of the enriched PS sphere aggregate.
