Meizhen Zhang

Label-Free SERS Sensing of PFOA at Few-Molecule Levels Using Plasmonic-Active Diatom Photonic Crystal Nanomembranes

Abstract Perfluorooctanoic acid (PFOA) is a persistent environmental contaminant that poses significant risks to human health, yet its direct, label-free detection at trace levels remains challenging because of its weak Raman fingerprint signals. Reliable detection usually depend...