Improved Surface Plasmon Resonance Sensing Sensitivity due to an Electrochemically Potential-Induced Gold Reconstruction

The progressively improved sensing sensitivity (Î?λSPR/Î?n, nm/RIU) to detect the refractive index is observed on SPR platform of an Au-covered epoxy gratings in increase potential cycling a typical three-electrode cell. Here, DVD-R optical disc was used as structure template prepare gratings, and newly formed reverse track pitch substrate working electrode directly aqueous sulfuric acid solution. It expected that Au reconstruction by electrolyte increases packing density atoms grain boundary improves propagation electromagnetic waves. Keywords: Surface Plasmon Resonance, SPR, Reconstruction, Sensitivity