A combined experimental and theoretical approach to measure spatially resolved local surface plasmon resonances in aluminum nanocrystals (Conference Presentation)

2018 ◽  
Author(s):  
Alina Bruma ◽  
Canhui Wang ◽  
Wei-Chang Yang ◽  
Dayne Swearer ◽  
Naomi Halas ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Theoretical Approach ◽  
Local Surface ◽  
Surface Plasmon Resonances ◽  
Spatially Resolved ◽  
Plasmon Resonances ◽  
Aluminum Nanocrystals

The Study of Tunable Local Surface Plasmon Resonances on Au-Ag and Ag-Au Core-Shell Alloy Nanostructure Particles With DDA Method

Plasmonics ◽  
2015 ◽  
Vol 10 (6) ◽  
pp. 1791-1800 ◽  
Author(s):  
Ye-Wan Ma ◽  
Li-Hua Zhang ◽  
Zhao-Wang Wu ◽  
Ming-Fang Yi ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Core Shell ◽  
Local Surface ◽  
Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Dda Method

scholarly journals Tunable Fano Resonance and Enhanced Sensing in a Simple Au/TiO2 Hybrid Metasurface

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 687 ◽  
Author(s):  
Zhihui He ◽  
Weiwei Xue ◽  
Wei Cui ◽  
Chunjiang Li ◽  
Zhenxiong Li ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Fano Resonance ◽  
Fdtd Simulation ◽  
Fano Resonances ◽  
Local Surface ◽  
Surface Plasmon Resonances ◽  
Coupled Mode ◽  
Plasmon Resonances ◽  
Refractive Index Sensors ◽  
Plasmon Polaritons

We investigate Fano resonances and sensing enhancements in a simple Au/TiO2 hybrid metasurface through the finite-different time-domain (FDTD) simulation and coupled mode theory (CMT) analysis. The results show that the Fano resonance in the proposed simple metasurface is caused by the destructive interaction between the surface plasmon polaritons (SPPs) and the local surface plasmon resonances (LSPRs), the quality factor and dephasing time for the Fano resonance can be effectively tuned by the thickness of Au and TiO2 structures, the length of each unit in x and y directions, as well as the structural defect. In particular, single Fano resonance splits into multiple Fano resonances caused by a stub-shaped defect, and multiple Fano resonances can be tuned by the size and position of the stub-shaped defect. Moreover, we also find that the sensitivity in the Au/TiO2 hybrid metasurface with the stub-shaped defect can reach up to 330 nm/RIU and 535 nm/RIU at the Fano resonance 1 and Fano resonance 2, which is more than three times as sensitive in the Au/TiO2 hybrid metasurface without the stub-shaped defect, and also higher than that in the TiO2 metasurface reported before. These results may provide further understanding of Fano resonances and guidance for designing ultra-high sensitive refractive index sensors.

scholarly journals Tuning the Fano Resonance Between Localized and Propagating Surface Plasmon Resonances for Refractive Index Sensing Applications

Plasmonics ◽  
2013 ◽  
Vol 8 (3) ◽  
pp. 1379-1385 ◽  
Author(s):  
Kristof Lodewijks ◽  
Jef Ryken ◽  
Willem Van Roy ◽  
Gustaaf Borghs ◽  
Liesbet Lagae ◽  
...  
Keyword(s):  
Refractive Index ◽  
Surface Plasmon ◽  
Fano Resonance ◽  
Surface Plasmon Resonances ◽  
Refractive Index Sensing ◽  
Sensing Applications ◽  
Plasmon Resonances
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