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Iron Nanowire Fabrication by Nano-Porous Anodized Aluminum and its Characterization
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Aluminum Nanorods.

Benjamin D Clark1, Christian R Jacobson1, Minhan Lou1

  • 1Department of Chemistry, ‡Department of Electrical & Computer Engineering, §Department of Physics & Astronomy, and ∥Laboratory for Nanophotonics, Rice University , 6100 Main Street, Houston, Texas 77005, United States.

Nano Letters
|December 23, 2017
PubMed
Summary
This summary is machine-generated.

Single-crystalline aluminum nanorods were synthesized, exhibiting unique plasmonic properties. These anisotropic nanocrystals offer tunable optical responses across visible and infrared spectra, paving the way for new plasmonic applications.

Keywords:
Anisotropicdark-field spectroscopynanocrystalsplasmonicssynthesis

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Plasmonics

Background:

  • Aluminum (Al) nanocrystals are synthesized via high-temperature decomposition of triisobutyl aluminum.
  • A significant fraction (approx. 15%) of these nanocrystals are single-crystalline Al nanorods.

Purpose of the Study:

  • To characterize the structure and optical properties of single-crystalline Al nanorods.
  • To explore their potential as tunable plasmonic materials.

Main Methods:

  • Synthesis of Al nanocrystals by high-temperature decomposition.
  • Structural analysis of nanorod geometry and crystallography.
  • Dark-field scattering spectroscopy of individual nanorods.
  • Theoretical modeling of plasmonic resonances.

Main Results:

  • Al nanorods are elongated along the ⟨110⟩ direction with hexagonal cross-sections.
  • Observed transverse quadrupolar and octupolar modes in visible and UV regimes.
  • Theoretical modeling predicted longitudinal resonances in the near- and mid-infrared.

Conclusions:

  • Introduced a new class of anisotropic, single-crystalline Al nanocrystals.
  • Demonstrated tunable plasmonic properties across a broad spectral range.
  • Al nanorods offer a promising platform for Earth-abundant, modifiable plasmonic nanostructures.