Hybrid plasmonic Au–TiN vertically aligned nanocomposites: a nanoscale platform towards tunable optical sensing. Issue 3 (10th December 2018)

• Record Type: Journal Article
• Authors: Wang, Xuejing; Jian, Jie; Diaz-Amaya, Susana; Kumah, Cindy E.; Lu, Ping; Huang, Jijie; Lim, Daw Gen; Pol, Vilas G.; Youngblood, Jeffrey P.; Boltasseva, Alexandra; Stanciu, Lia A.; O'Carroll, Deirdre M.; Zhang, Xinghang; Wang, Haiyan
• Is Part Of: Nanoscale advances. Volume 1:Issue 3(2019)
• Page Start: 1045
• Page End: 1054
• Publication Date: 2018-12-10
• Subjects: 620.5
• DOI: 10.1039/c8na00306h
• Languages: English
• ISSNs: 2516-0230

Abstract

Abstract : A tailorable Au–TiN hybrid plasmonic nanocomposite with tunable optical functionality has been demonstrated. Abstract : Tunable plasmonic structure at the nanometer scale presents enormous opportunities for various photonic devices. In this work, we present a hybrid plasmonic thin film platform: i.e., a vertically aligned Au nanopillar array grown inside a TiN matrix with controllable Au pillar density. Compared to single phase plasmonic materials, the presented tunable hybrid nanostructures attain optical flexibility including gradual tuning and anisotropic behavior of the complex dielectric function, resonant peak shifting and change of surface plasmon resonances (SPRs) in the UV-visible range, all confirmed by numerical simulations. The tailorable hybrid platform also demonstrates enhanced surface plasmon Raman response for Fourier-transform infrared spectroscopy (FTIR) and photoluminescence (PL) measurements, and presents great potentials as designable hybrid platforms for tunable optical-based chemical sensing applications.