Back to Search
Start Over
Condition of excitation and sensitivity of diffractively-coupled surface lattice resonances over plasmonic nanoparticle arrays in ATR geometry
- Source :
- Synthesis and Photonics of Nanoscale Materials XV, Synthesis and Photonics of Nanoscale Materials XV, Jan 2018, San Francisco, United States. pp.1052109, ⟨10.1117/12.2295192⟩
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- International audience; "Condition of excitation and sensitivity of diffractively-coupled surface lattice resonances over plasmonic nanoparticle arrays in ATR geometry ," Proc. ABSTRACT We investigate conditions of excitation and properties of Plasmonic Surface Lattice Resonances (PSLR) over glass substrate-supported Au nanoparticle dimers (~100-200 nm) arranged in a periodic metamaterial lattice, in Attenuated Total Reflection (ATR) optical excitation geometry, and assess their sensitivities to variations of refractive index (RI) of the adjacent sample dielectric medium. We show that spectral sensitivity of PSLR to RI variations is determined by the lattice periodicity (~ 320 nm per RIU change in our case), while ultranarrow resonance lineshapes (down to a few nm full-width-at-half-maximum) provide very high figure-of-merit values evidencing the possibility of ultrasensitive biosensing measurements. Combining advantages of nanoscale architectures, including a strong concentration of electric field, the possibility of manipulation at the nanoscale etc, and high phase and spectral sensitivities, PSLRs promise a drastic advancement of current state-of-the-art plasmonic biosensing technology. Keywords: plasmonic metamaterials for biosensing plasmonic surface lattice resonances, diffractive coupling, attenuated total reflection, plasmonic biosensing, improvement of sensitivity.
- Subjects :
- [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Materials science
Metamaterial
Resonance
Physics::Optics
Geometry
02 engineering and technology
Dielectric
021001 nanoscience & nanotechnology
01 natural sciences
California
United States
010309 optics
Spectral sensitivity
Attenuated total reflection
0103 physical sciences
Event: SPIE LASE
San Francisco
0210 nano-technology
Refractive index
Plasmon
Excitation
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Synthesis and Photonics of Nanoscale Materials XV, Synthesis and Photonics of Nanoscale Materials XV, Jan 2018, San Francisco, United States. pp.1052109, ⟨10.1117/12.2295192⟩
- Accession number :
- edsair.doi.dedup.....7711a9a0e49e8064d26f12485f9859b3