scholarly journals Multiple Surface Plasmon Resonances and Near-Infrared Field Enhancement of Gold Nanowells

2008 ◽  
Vol 80 (13) ◽  
pp. 4945-4950 ◽  
Author(s):  
Kebin Li ◽  
Liviu Clime ◽  
Lilin Tay ◽  
Bo Cui ◽  
Matthias Geissler ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Near Infrared ◽  
Field Enhancement ◽  
Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Multiple Surface Plasmon Resonances

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.

scholarly journals Multiple surface plasmon resonances enhanced nonlinear optical microscopy

Nanophotonics ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 487-493 ◽  
Author(s):  
Xiaohu Mi ◽  
Yuyang Wang ◽  
Rui Li ◽  
Mengtao Sun ◽  
Zhenglong Zhang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Optical Microscopy ◽  
Surface Plasmon ◽  
Nonlinear Optical ◽  
Surface Plasmon Resonances ◽  
Nonlinear Optical Microscopy ◽  
Two Photon ◽  
Plasmon Resonances ◽  
Anti Stokes ◽  
Multiple Surface Plasmon Resonances

AbstractThe nonlinear optical microscopies of coherent two-photon excited fluorescence and anti-Stokes Raman scattering are strongly enhanced by multiple surface plasmon resonances (MSPRs). The Au@Ag nanorods presented strong MSPRs peaks at 800 and 400 nm, and can enhance nonlinear optical microscopy at fundamental and double frequencies, respectively. A two-dimensional (2D) material of g-C3N4 is employed to study the plasmon-enhanced nonlinear optical microscopy by the femtosecond laser. The electric analysis reveals that the MSPRs of the Au@Ag nanorod can significantly enhance the signals of two-photon excited fluorescence and anti-Stokes Raman scattering by up to the orders of 104 and 1016, respectively. The results demonstrate the great advantages of plasmon-enhanced nonlinear optical microscopy for the optical analysis on 2D materials, thus providing a new adventure for increasing the optical resolutions of nonlinear optical microscopy.

Multiple surface plasmon resonances in silver and copper nanorods

2011 ◽  
Vol 21 (47) ◽  
pp. 19069 ◽  
Author(s):  
Min Kyung Oh ◽  
Hyo Jin Baik ◽  
Seong Kyu Kim ◽  
Sungho Park
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Copper Nanorods ◽  
Multiple Surface Plasmon Resonances

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.

The localized surface plasmon resonances based on a Bragg reflector

2014 ◽  
Vol 28 (25) ◽  
pp. 1450201 ◽  
Author(s):  
Jie Wang ◽  
Yumin Liu ◽  
Zhongyuan Yu ◽  
Chunwei Ye ◽  
Hongbo Lv ◽  
...  
Keyword(s):  
Cross Section ◽  
Surface Plasmon ◽  
Field Enhancement ◽  
Resonance Wavelength ◽  
Bragg Reflector ◽  
Localized Surface Plasmon ◽  
Surface Plasmon Resonances ◽  
Localized Surface Plasmon Resonances ◽  
Special Character ◽  
Plasmon Resonances

In this paper, we present the theoretical analysis on how the wavelength of the localized surface plasmon resonances of gold nanoparticle can lead shift for the resonance wavelength. In our results, we calculate the scattering cross-section, the absorption cross-section and the field enhancement due to the nanoparticle. Numerical simulation were done using the finite element method (FEM). The work that we do here is different from the previous work because we use the Bragg reflector as a substrate. The Bragg reflector has a property of high reflectivity in some certain frequency bandwidth because of its periodic structure. The coherence interference of the Bragg reflector contributes to the plasmon resonances and results in some special character for a wide variety application, from sensing to photovoltaic. The periodic number of the Bragg reflector substrate and shapes of the nanoparticles are also discussed that result in a shift of the resonance wavelength.

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