Fig. 2
From: Pinhole Effect on the Melting Behavior of Ag@Al2O3 SERS Substrates
The melting procedures of a uncoated Ag NRs and c Ag@Al2O3/10 at 50–350 °C through monitoring their reflectivity changes upon annealing (red line), and the corresponding extreme point of the reflectivity’s derivative from each sample as their melting point (blue line). The morphological changes of b uncoated Ag NRs and d Ag@Al2O3/10 after heating