Fabrication of gold-deposited plasmonic crystal based on nanoimprint lithography for label-free biosensing application

In this study, a highly sensitive label-free plasmonic crystal (PC) biosensor is fabricated. The PC has large area periodic nanodisk structure fabricated using polymer mold. The device could detect the protein immobilization sensitively as surrounding refractive index change. Present PC device is expected to apply for highly sensitive label-free biosensor.