Tunable localized surface plasmon resonances of asymmetric Au/SiO2/Au cross-shape nanobars

2014 ◽  
Vol 28 (17) ◽  
pp. 1450143 ◽  
Author(s):  
M. L. Wan ◽  
H. J. Du ◽  
Y. L. Song ◽  
F. Q. Zhou ◽  
K. J. Dai
Keyword(s):  
Electric Fields ◽  
Surface Plasmon ◽  
Near Infrared ◽  
Dipole Approximation ◽  
Localized Surface Plasmon ◽  
Surface Plasmon Resonances ◽  
Localized Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Surface Enhanced Raman ◽  
Infrared Spectral

The plasmonic properties of asymmetric Au / SiO 2/ Au sandwiched cross-shape nanobars are investigated theoretically using the discrete dipole approximation (DDA) method. Two localized surface plasmon resonances are observed in the extinction spectra, which perform extreme sensitivity to the length and width of the nanobar and can be tuned easily throughout visible and into near-infrared spectral regions. The local electric fields around the nanobar are calculated and a pure electromagnetic Raman enhancement factor of about 106 can be achieved. In addition, compared to a monolayer gold nanobar, it exhibits more "hot spots" and stronger localized electric field enhancements. This plasmonic substrate provides potential applications in surface enhanced Raman scattering (SERS) and nonlinear optical devices.

Tunable near-infrared localized surface plasmon resonances of djurleite nanocrystals: effects of size, shape, surface-ligands and oxygen exposure time

2015 ◽  
Vol 3 (26) ◽  
pp. 6686-6691 ◽  
Author(s):  
Dongxu Zhu ◽  
Aiwei Tang ◽  
Haihang Ye ◽  
Miao Wang ◽  
Chunhe Yang ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Exposure Time ◽  
Near Infrared ◽  
Resonance Absorption ◽  
Localized Surface Plasmon ◽  
Surface Plasmon Resonances ◽  
Surface Ligands ◽  
Localized Surface Plasmon Resonances ◽  
Oxygen Exposure ◽  
Plasmon Resonances

The effects of size, shape, surface ligands and oxygen exposure time on the localized surface plasmon resonance absorption in monoclinic djurleite nanocrystals have been demonstrated.

Surface-enhanced Raman scattering induced by the coupling of the guided mode with localized surface plasmon resonances

Nanoscale ◽  
2019 ◽  
Vol 11 (30) ◽  
pp. 14164-14173 ◽  
Author(s):  
Shaoying Wu ◽  
Yang Shen ◽  
Chongjun Jin
Keyword(s):  
Surface Plasmon ◽  
Field Enhancement ◽  
Localized Surface Plasmon ◽  
Sers Substrate ◽  
Surface Plasmon Resonances ◽  
Localized Surface Plasmon Resonances ◽  
Guided Mode ◽  
Plasmon Resonances ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

In a hybrid SERS substrate, the coupling of guide mode and localized surface plasmon resonances leads to a remarkable local field enhancement and thus enables a better SERS performance than its nanoparticle counterparts.

A Facile Route Toward Hydrophilic Plasmonic Copper Selenide Nanocrystals: New Perspectives for SEIRA Applications

2021 ◽  
Author(s):  
Jailson José da Silva ◽  
Wedja Maciel dos Santos ◽  
Rafael Fernandes ◽  
Adriana Fontes ◽  
Beate S. Santos ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Near Infrared ◽  
Copper Selenide ◽  
Localized Surface Plasmon ◽  
Surface Plasmon Resonances ◽  
Localized Surface Plasmon Resonances ◽  
Wide Range ◽  
Plasmon Resonances ◽  
P Type ◽  
Facile Route

Non-stochiometric copper selenide nanocrystals (NCs) are p-type semiconductors that have a wide range of applications, from biomedicine to electronics. These NCs present localized surface plasmon resonances (LSPRs) in the near-infrared...

scholarly journals Probing the symmetry of the potential of localized surface plasmon resonances with phase-shaped electron beams

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Giulio Guzzinati ◽  
Armand Béché ◽  
Hugo Lourenço-Martins ◽  
Jérôme Martin ◽  
Mathieu Kociak ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Electron Beams ◽  
Localized Surface Plasmon ◽  
Surface Plasmon Resonances ◽  
Localized Surface Plasmon Resonances ◽  
Plasmon Resonances
Sign in / Sign up

Export Citation Format

Share Document