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

<div>SEM images of AgNPs on filter papers treated with different concentrations of NaCl at different soaking time. The magnification is 5,000 times and the scale bar is 1 <i>μ</i>m.</div>

Journal of Nanomaterials

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Figure 4

Figure 4: Evaluation and Optimization of Paper-Based SERS Substrate for Potential Label-Free Raman Analysis of Seminal Plasma 