Characteristics of localized surface plasmons excited on mixed monolayers composed of self-assembled Ag and Au nanoparticles

Nanoscale ◽  
2015 ◽  
Vol 7 (37) ◽  
pp. 15310-15320 ◽  
Author(s):  
Daisuke Tanaka ◽  
Keisuke Imazu ◽  
Jinwoo Sung ◽  
Cheolmin Park ◽  
Koichi Okamoto ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Surface Plasmons ◽  
Au Nanoparticles ◽  
Matrix Phase ◽  
Localized Surface Plasmons ◽  
Mixed Monolayers ◽  
Self Assembled

AuNPs form ∼100 nm island domains in a homogeneous AgNP matrix phase in mixed monolayers, which maintain independent LSPR bands and selective fluorescence quenching.

scholarly journals Self-assembled metal-oxide nanoparticles on GaAs: infrared absorption enabled by localized surface plasmons

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Eduardo Martínez Castellano ◽  
Julen Tamayo-Arriola ◽  
Miguel Montes Bajo ◽  
Alicia Gonzalo ◽  
Lazar Stanojević ◽  
...  
Keyword(s):  
Quantum Well ◽  
Metal Oxide ◽  
Surface Plasmons ◽  
Metal Oxide Nanoparticles ◽  
Infrared Photodetectors ◽  
Oxide Nanoparticles ◽  
Multiple Quantum ◽  
Localized Surface Plasmons ◽  
Mid Infrared ◽  
Self Assembled

Abstract Metal-oxides hold promise as superior plasmonic materials in the mid-infrared compared to metals, although their integration over established material technologies still remains challenging. We demonstrate localized surface plasmons in self-assembled, hemispherical CdZnO metal-oxide nanoparticles on GaAs, as a route to enhance the absorption in mid-infrared photodetectors. In this system, two localized surface plasmon modes are identified at 5.3 and 2.7 μm, which yield an enhancement of the light intensity in the underlying GaAs. In the case of the long-wavelength mode the enhancement is as large as 100 near the interface, and persists at depths down to 50 nm. We show numerically that both modes can be coupled to infrared intersubband transitions in GaAs-based multiple quantum wells, yielding an absorbed power gain as high as 5.5, and allowing light absorption at normal incidence. Experimentally, we demonstrate this coupling in a nanoparticle/multiple quantum well structure, where under p-polarization the intersubband absorption is enhanced by a factor of 2.5 and is still observed under s-polarization, forbidden by the usual absorption selection rules. Thus, the integration of CdZnO on GaAs can help improve the figures of merit of quantum well infrared photodetectors, concept that can be extended to other midinfrared detector technologies.

Absorption enhancement of silicon via localized surface plasmons resonance in blue band

2020 ◽  
Vol 13 (6) ◽  
pp. 1-23
Author(s):  
WANG Hao-bing ◽  
◽  
TAO Jin ◽  
LV Jin-guang ◽  
MENG De-jia ◽  
...  
Keyword(s):  
Surface Plasmons ◽  
Absorption Enhancement ◽  
Localized Surface Plasmons ◽  
Blue Band

scholarly journals None sharp corner localized surface plasmons resonance based ultrathin metasurface single layer quarter wave plate

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Qinyu Qian ◽  
Pengfei Liu ◽  
Li Fan ◽  
Liang Zhao ◽  
Chinhua Wang
Keyword(s):  
Surface Plasmons ◽  
Amplitude Ratio ◽  
Single Layer ◽  
Quarter Wave Plate ◽  
Localized Surface Plasmons ◽  
Sharp Corner ◽  
Wave Plate ◽  
Nanophotonic Devices ◽  
Elliptical Ring ◽  
Quarter Wave

AbstractWe report on a non-sharp-corner quarter wave plate (NCQW) within the single layer of only 8 nm thickness structured by the Ag hollow elliptical ring array, where the strong localized surface plasmons (LSP) resonances are excited. By manipulating the parameters of the hollow elliptical ring, the transmitted amplitude and phase of the two orthogonal components are well controlled. The phase difference of π/2 and amplitude ratio of 1 is realized simultaneously at the wavelength of 834 nm with the transmission of 0.46. The proposed NCQW also works well in an ultrawide wavelength band of 110 nm, which suggests an efficient way of exciting LSP resonances and designing wave plates, and provides a great potential for advanced nanophotonic devices and integrated photonic systems.

Self-Assembled Large-Area Annular Cavity Arrays with Tunable Cylindrical Surface Plasmons for Sensing

ACS Nano ◽  
2015 ◽  
Vol 9 (2) ◽  
pp. 1913-1925 ◽  
Author(s):  
Haibin Ni ◽  
Ming Wang ◽  
Tianyi Shen ◽  
Jing Zhou
Keyword(s):  
Surface Plasmons ◽  
Cylindrical Surface ◽  
Large Area ◽  
Self Assembled

Control of Spoof Localized Surface Plasmons Using Terahertz Near-field Microscope

2018 ◽  
Author(s):  
Takashi Arikawa ◽  
Shohei Morimoto ◽  
Tomoki Hiraoka ◽  
François Blanchard ◽  
Kyosuke Sakai ◽  
...  
Keyword(s):  
Surface Plasmons ◽  
Near Field ◽  
Localized Surface Plasmons
Sign in / Sign up

Export Citation Format

Share Document