Evaluation and Optimization of Paper-Based SERS Substrate for Potential Label-Free Raman Analysis of Seminal Plasma

Figure 1

Schematic illustration of SP sample and paper SERS substrate preparation as well as the corresponding detection of SP sample. Top to bottom: SP separation and filtration (a), filter paper soaked with NaCl solution and concentrated AgNPs solution (b), and SP sample loading and SERS measurement (c).

(a)

(b)

(c)