Hybrid plasmonic Au–TiN vertically aligned nanocomposites: a nanoscale platform towards tunable optical sensing
- Purdue Univ., West Lafayette, IN (United States). Dept. of Materials Engineering
- Rutgers Univ., Piscataway, NJ (United States). Dept. of Materials Science and Engineering
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Purdue Univ., West Lafayette, IN (United States). Dept. of Chemical Engineering
- Purdue Univ., West Lafayette, IN (United States). Dept. of Electrical Engineering
- Purdue Univ., West Lafayette, IN (United States). Dept. of Materials Engineering and Dept. of Electrical Engineering
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. Lastly, 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.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
- Grant/Contract Number:
- AC04-94AL85000; NA0003525
- OSTI ID:
- 1542142
- Report Number(s):
- SAND-2019-7288J; NAADAI; 676846
- Journal Information:
- Nanoscale Advances, Vol. 1, Issue 3; ISSN 2516-0230
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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