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Title: Self-Assembled Ag–TiN Hybrid Plasmonic Metamaterial: Tailorable Tilted Nanopillar and Optical Properties

Journal Article · · Advanced Optical Materials
 [1];  [1];  [2];  [1];  [3];  [1];  [1];  [4];  [4];  [2];  [1]; ORCiD logo [3]; ORCiD logo [5]
  1. Purdue Univ., West Lafayette, IN (United States). Dept. of Materials Engineering
  2. Purdue Univ., West Lafayette, IN (United States). Birck Nanotechnology Center
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT) and Matrials Physics and Applications Division
  4. J.A. Woollam Co. Inc., Lincoln, NE (United States)
  5. Purdue Univ., West Lafayette, IN (United States). Dept. of Materials Engineering and Dept. of Electrical and Computer Engineering

Key challenges limiting the adoption of metallic plasmonic nanostructures for practical devices include structural stability and the ease of large-scale fabrication. Overcoming these issues may require novel metamaterial fabrication with potentials for improved durability under extreme conditions. Here, in this paper, a self-assembled growth of a hybrid plasmonic metamaterial in thin-film form is reported, with epitaxial Ag nanopillars embedded in TiN, a mechanically strong and chemically inert matrix. One of the key achievements lies in the successful control of the tilt angle of the Ag nanopillars (from 0° to 50°), which is attributed to the interplay between the growth kinetics and thermodynamics during deposition. Such an anisotropic nature offered by the tilted Ag nanopillars in TiN matrix is crucial for achieving broadband, asymmetric optical selectivity. Optical spectra coupled with numerical simulations demonstrate strong plasmonic resonance, as well as angular selectivity in a broad UV–vis to near-infrared regime. The nanostructured metamaterials in this work, which consist of highly conductive metallic nanopillars in a durable nitride matrix, have the potential to serve as a novel hybrid material platform for highly tailorable nanoscale metamaterial designs, suitable for high temperature optical applications.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); US Department of the Navy, Office of Naval Research (ONR); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
89233218CNA000001; DMR-1565822; DMR-1809520; N000014-15-1-2833
OSTI ID:
1597360
Report Number(s):
LA-UR-19-29818
Journal Information:
Advanced Optical Materials, Vol. 7, Issue 3; ISSN 2195-1071
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 30 works
Citation information provided by
Web of Science

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Cited By (3)

Hybrid plasmonic Au–TiN vertically aligned nanocomposites: a nanoscale platform towards tunable optical sensing journal January 2019
AlN-based hybrid thin films with self-assembled plasmonic Au and Ag nanoinclusions journal January 2019
Strain-Driven In-plane Ordering in Vertically Aligned ZnO–Au Nanocomposites with Highly Correlated Metamaterial Properties journal January 2020