Sonochemical Reduction and Immobilization of AgNPs on PCL Nanofibers for Stable Surface-Enhanced Raman Scattering Substrates
This study demonstrates a simple sonochemical method for simultaneously reducing and immobilizing silver nanoparticles onto electrospun PCL nanofibers to create stable SERS substrates, identifying that a 0.5 mM AgNO₃ precursor concentration yields optimal signal enhancement by balancing nanoparticle loading with minimal aggregation.