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Title: Self-Assembled Epitaxial Au–Oxide Vertically Aligned Nanocomposites for Nanoscale Metamaterials

Journal Article · · Nano Letters
 [1];  [2];  [3];  [4];  [5];  [6];  [1];  [6];  [1];  [1];  [6];  [6];  [7];  [7];  [8];  [9];  [3];  [2];  [10]
  1. Texas A&M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering
  2. Univ. of Texas, Austin, TX (United States). Dept. of Physics and the Center for Complex Quantum Systems
  3. Univ. of Texas, Austin, TX (United States). Dept. of Electrical and Computer Engineering
  4. Texas A&M Univ., College Station, TX (United States). Dept. of Chemistry
  5. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  6. Texas A&M Univ., College Station, TX (United States). Dept. of Electrical and Computer Engineering
  7. Texas A&M Univ., College Station, TX (United States). Dept. of Mechanical Engineering
  8. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)
  9. Texas A&M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering; Texas A&M Univ., College Station, TX (United States). Dept. of Chemistry
  10. Texas A&M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering; Texas A&M Univ., College Station, TX (United States). Dept. of Electrical and Computer Engineering

Metamaterials made of nanoscale inclusions or artificial unit cells exhibit exotic optical properties that do not exist in natural materials. Promising applications, such as super-resolution imaging, cloaking, hyperbolic propagation, and ultrafast phase velocities have been demonstrated based on mostly micrometer-scale metamaterials and few nanoscale metamaterials. To date, most metamaterials are created using costly and tedious fabrication techniques with limited paths toward reliable large-scale fabrication. In this work, we demonstrate the one-step direct growth of self-assembled epitaxial metal–oxide nanocomposites as a drastically different approach to fabricating large-area nanostructured metamaterials. Using pulsed laser deposition, we fabricated nanocomposite films with vertically aligned gold (Au) nanopillars (~20 nm in diameter) embedded in various oxide matrices with high epitaxial quality. Strong, broad absorption features in the measured absorbance spectrum are clear signatures of plasmon resonances of Au nanopillars. By tuning their densities on selected substrates, anisotropic optical properties are demonstrated via angular dependent and polarization resolved reflectivity measurements and reproduced by full-wave simulations and effective medium theory. Our model predicts exotic properties, such as zero permittivity responses and topological transitions. In conclusion, our studies suggest that these self-assembled metal–oxide nanostructures provide an exciting new material platform to control and enhance optical response at nanometer scales.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES); US Army Research Office (ARO); Welch Foundation; China Scholarship Council (CSC)
Grant/Contract Number:
AC04-94AL85000; AC02-5CH11231; DMR-0846504; DMR-1306878; W911NF-11-1-0447; N00014-10-1-0942
OSTI ID:
1340265
Report Number(s):
SAND-2016-12660J; 649948
Journal Information:
Nano Letters, Vol. 16, Issue 6; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 83 works
Citation information provided by
Web of Science

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Broad Range Tuning of Phase Transition Property in VO 2 Through Metal‐Ceramic Nanocomposite Design journal July 2019
Nanoporous Films and Nanostructure Arrays Created by Selective Dissolution of Water-Soluble Materials journal September 2018
Tunable magnetic anisotropy of self-assembled Fe nanostructures within a La 0.5 Sr 0.5 FeO 3 matrix journal January 2018
Atomic‐Scale Study of Metal–Oxide Interfaces and Magnetoelastic Coupling in Self‐Assembled Epitaxial Vertically Aligned Magnetic Nanocomposites journal July 2019
Tunable Optical Properties in Self‐Assembled Oxide‐Metal Hybrid Thin Films via Au‐Phase Geometry Control: From Nanopillars to Nanodisks journal December 2019
Metal Oxide Nanocomposites: A Perspective from Strain, Defect, and Interface journal October 2018
Tailorable Optical Response of Au-LiNbO 3 Hybrid Metamaterial Thin Films for Optical Waveguide Applications journal July 2018
Self-Assembled Ordered Three-Phase Au-BaTiO 3 -ZnO Vertically Aligned Nanocomposites Achieved by a Templating Method journal December 2018
Nanoscale Artificial Plasmonic Lattice in Self-Assembled Vertically Aligned Nitride-Metal Hybrid Metamaterials journal April 2018
Self‐Assembled Ag–TiN Hybrid Plasmonic Metamaterial: Tailorable Tilted Nanopillar and Optical Properties journal December 2018
Template free growth of robustly stable nanophotonic structures: broadband light superabsorbers journal January 2018
Self-Organized Epitaxial Vertically Aligned Nanocomposites with Long-Range Ordering Enabled by Substrate Nanotemplating journal April 2017
Nanoporous Films and Nanostructure Arrays Created by Selective Dissolution of Water-Soluble Materials. journalarticle January 2018
Strain-Driven In-plane Ordering in Vertically Aligned ZnO–Au Nanocomposites with Highly Correlated Metamaterial Properties journal January 2020