Fabrication and near-field visualization of a wafer-scale dense plasmonic nanostructured array.

ABSTRACT: Developing a sensor that identifies and quantifies trace amounts of analyte molecules is crucially important for widespread applications, especially in the areas of chemical and biological detection. By non-invasively identifying the vibrational signatures of the target molecules, surface-enhanced Raman scattering (SERS) has been widely employed as a tool for molecular detection. Here, we report on the reproducible fabrication of wafer-scale dense SERS arrays and single-nanogap level near-field imaging of these dense arrays under ambient conditions. Plasmonic nanogaps densely populated the spaces among globular Ag nanoparticles with an areal density of 120 particles per μm² upon application of a nanolithography-free simple process consisting of the Ar plasma treatment of a polye

SUBMITTER: Yun J 

PROVIDER: S-EPMC9078216 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature