Label-Free and Rapid Detection of Anthrax Protective Antigen by Surface-Enhanced Raman Scattering on Au Nanorods

Aiming at the requirement of ultra-sensitive on-site rapid detection of anthrax protective antigens (PA), we proposed a label-free detection scheme based on surface-enhanced Raman Scattering (SERS) on Au nanorods (AuNRs) substrate that we fabricated. The Raman spectrum of anthrax protective antigen was reported for the first time. The limit of detection (LOD) of PA on the AuNRs was characterized t...