Fig. 4

A Carbon-Dot/Silver nano-hybrid as SERS films for bacteria detection: schematic illustration of the synthesis of C-dot-Ag-NP-PDMS films, photography showing the flexibility of the film and SERS spectrum of 10⁴ CFU/mL of Pseudomonas Aeruginosa B AuNP@MoS₂ quantum dots nano-hybrid for SERS sensing of cancer cells: schematic illustration of the synthesis of AuNP@MoS₂ quantum dots nano-hybrid and related biological SERS application and SERS spectra of 4T1 cells mixed with MoS₂ QDs (red line), AuNPs (blue line) and AuNP@MoS₂ nanohybrid (violet line). Reprinted with permission from ref. [124] (A) and [125] (B)