[14p-F202-1~9] CS.8 3.11/3.12 Code-sharing session "Photonic and plasmonic structures, and thermal control"

▲ [14p-F202-5] Oxide Surface functionalization for plasmon-enhanced infrared spectoscopy

〇(PC)Kai Chen^1,2, Thang Duy Dao^1,2, Satoshi Ishii^1,2, Tadaaki Nagao^1,2 (1.NIMS, 2.CREST)

Keywords:surface-enhanced infrared absorption spectroscopy, plasmon, metamaterial

We demonstrate surface functionalization of the Al metamaterial perfect absorbers and ITO nanorod arrays using phosphonic acid and subsequent detection of the C=O vibration mode via surface-enhanced infrared absorption spectroscopy. In addition, physically adsorbed BSA proteins and chemically adsorbed streptavidin proteins are detected on Al metamaterials and ITO nanorods, respectively. Surface functionalization with phosphonic acid provides various functional groups to the oxide surfaces opening up great opportunities for oxide plasmonic nanostructures for biochemical sensing applications