Boosting infrared energy transfer in 3D nanoporous gold antennas.

@article{Garoli2017BoostingIE,
  title={Boosting infrared energy transfer in 3D nanoporous gold antennas.},
  author={Denis Garoli and Eugenio Calandrini and Angelo Bozzola and Michele Ortolani and Sandro Cattarin and Simona Barison and Andrea Toma and Francesco De Angelis},
  journal={Nanoscale},
  year={2017},
  volume={9 2},
  pages={
          915-922
        }
}
The applications of plasmonics to energy transfer from free-space radiation to molecules are currently limited to the visible region of the electromagnetic spectrum due to the intrinsic optical properties of bulk noble metals that support strong electromagnetic field confinement only close to their plasma frequency in the visible/ultraviolet range. In this work, we show that nanoporous gold can be exploited as a plasmonic material for the mid-infrared region to obtain strong electromagnetic… 

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References

SHOWING 1-10 OF 44 REFERENCES
3D vertical nanostructures for enhanced infrared plasmonics
TLDR
By arranging the nanostructures in periodic arrays, 3D architectures can provide a much stronger plasmonic response, compared to that achievable with the use of 2D configurations, leading to higher energy harvesting properties and improved Q-factors, with bright perspective up to the terahertz range.
All-semiconductor plasmonic nanoantennas for infrared sensing.
TLDR
A new type of infrared plasmonic antenna for long-wavelength nanoscale enhanced sensing with very weak molecular absorption signatures when these signatures are in spectral proximity to the antenna resonance.
Impact of the plasmonic near- and far-field resonance-energy shift on the enhancement of infrared vibrational signals.
TLDR
The Fano-type vibrational lines in a broad spectral window are studied to show how the various vibrational signals are enhanced in relation to the ratio of the far-field plasmonic resonance and the molecular vibrational frequencies.
Porous Gold Nanowires: Plasmonic Response and Surface‐Enhanced Infrared Absorption
Because of its extended surface area porous gold is of potential interest for surface‐enhanced spectroscopy methods. Optical properties of porous and smooth gold nanowires of similar diameter are
Real-time tunable lasing from plasmonic nanocavity arrays
TLDR
By integrating gold nanoparticle arrays within microfluidic channels and flowing in liquid gain materials with different refractive indices, dynamic tuning of the plasmon lasing wavelength is achieved.
Nanostructure-based plasmon-enhanced Raman spectroscopy for surface analysis of materials
Since 2000, there has been an explosion of activity in the field of plasmon-enhanced Raman spectroscopy (PERS), including surface-enhanced Raman spectroscopy (SERS), tip-enhanced Raman spectroscopy
Importance of Plasmonic Scattering for an Optimal Enhancement of Vibrational Absorption in SEIRA with Linear Metallic Antennas
Surface-enhanced infrared absorption (SEIRA) and surface-enhanced Raman scattering (SERS) represent very effective techniques to detect molecular vibrational fingerprints. These techniques can be
Midinfrared Plasmon-Enhanced Spectroscopy with Germanium Antennas on Silicon Substrates.
TLDR
This work fabricates antennas out of heavily doped Ge films epitaxially grown on Si wafers and demonstrates up to 2 orders of magnitude signal enhancement for the molecules located in the antenna hot spots compared to those located on a bare silicon substrate.
Mid-infrared plasmonic biosensing with graphene
TLDR
The unique electro-optical properties of graphene are exploited to demonstrate a high-sensitivity tunable plasmonic biosensor for chemically specific label-free detection of protein monolayers and the combination of tunable spectral selectivity and enhanced sensitivity of graphene opens exciting prospects for biosensing.
Spaser, Plasmonic Amplification, and Loss Compensation
Not just a promise anymore [1], nanoplasmonics has delivered a number of important applications: ultrasensing [2], scanning near-field optical microscopy [3, 4], surface plasmon (SP)-enhanced
...
1
2
3
4
5
...