Fabrication of plasmonic opposite metal spindles in nanowells by shadow deposition for sensing

Abstract

An array of plasmonic opposite metal spindles in nanowells is fabricated for sensing. This array is fabricated based on the combination of nanoimprint lithography and two-step shadow deposition, which exhibits a remarkable plasmonic sensing property and SERS activity. This method can be applied to the preparation of plasmonic structures for detecting and sensing applications.