Fig. 5
From: Pinhole Effect on the Melting Behavior of Ag@Al2O3 SERS Substrates
a Typical Raman signals of 1 × 10−6 M 4-MBA molecules from uncoated Ag NRs and distinct PC Ag@Al2O3 substrates. b Normalized Raman intensity of 1 × 10−6 M 4-MBA from uncoated Ag NRs and Ag@Al2O3/10 at various conditions, i.e., at room temperature (RT), and after annealing at 200, 260, 300, and 350 °C, respectively.