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Title: Hybrid plasmonic Au–TiN vertically aligned nanocomposites: a nanoscale platform towards tunable optical sensing

Journal Article · · Nanoscale Advances
DOI:https://doi.org/10.1039/c8na00306h· OSTI ID:1542142
 [1];  [1];  [1];  [2];  [3];  [1];  [1]; ORCiD logo [4]; ORCiD logo [1];  [5];  [1]; ORCiD logo [2];  [1]; ORCiD logo [6]
  1. Purdue Univ., West Lafayette, IN (United States). Dept. of Materials Engineering
  2. Rutgers Univ., Piscataway, NJ (United States). Dept. of Materials Science and Engineering
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  4. Purdue Univ., West Lafayette, IN (United States). Dept. of Chemical Engineering
  5. Purdue Univ., West Lafayette, IN (United States). Dept. of Electrical Engineering
  6. 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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Cited By (3)

Broad Range Tuning of Phase Transition Property in VO 2 Through Metal‐Ceramic Nanocomposite Design journal July 2019
Titanium Nitride Modified Photoluminescence from Single Semiconductor Nanoplatelets journal October 2019
Tunable optical materials for multi-resonant plasmonics: from TiN to TiON [Invited] journal January 2020