scholarly journals A High-Sensitivity Methane Sensor with Localized Surface Plasmon Resonance Behavior in an Improved Hexagonal Gold Nanoring Array

Sensors ◽  
2019 ◽  
Vol 19 (21) ◽  
pp. 4803 ◽  
Author(s):  
Hai Liu ◽  
Cong Chen ◽  
Yanzeng Zhang ◽  
Bingbing Bai ◽  
Shoufeng Tang
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Structural Parameters ◽  
Extinction Spectrum ◽  
Localized Surface Plasmon ◽  
Gas Sensitivity ◽  
Methane Sensor ◽  
Sensor Structure

This paper proposes a methane sensor based on localized surface plasmon resonance (LSPR) of a hexagonal periodic gold nanoring array. The effects of structural parameters on the extinction spectrum and refractive index (RI) sensitivity are analyzed to obtain optimal parameters. In particular, the RI sensitivity can reach 550.08 nm/RIU through improvement of the sensor structure, which is an increase of 17.4% over the original value. After coating a methane-sensitive membrane on the inner and outer surfaces of the gold rings, the methane concentration can be accurately measured with a gas sensitivity of −1.02 nm/%. The proposed method is also applicable to quantitative analyses of components concentration and qualitative analyses of gas composition.

Localized surface plasmon resonance modes on an asymmetric cylindrical nanorod dimer

2016 ◽  
Vol 30 (22) ◽  
pp. 1650280 ◽  
Author(s):  
Rui-Bing Wang ◽  
Zhi-Dong Zhang ◽  
Guo-Tai Jiao ◽  
Chen-Yang Xue ◽  
Shu-Bin Yan ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Structural Parameters ◽  
Localized Surface Plasmon ◽  
Extinction Spectra ◽  
Resonance Modes ◽  
Nanorod Dimer ◽  
Bonding Mode

The extinction spectra and electric field distribution of an asymmetric cylindrical nanorod dimer (ACND) are calculated by discrete dipole approximation. The ACND is composed of two linear orders of cylindrical silver nanorods with different radii and lengths. The effects of the structural parameters of ACND on the localized surface plasmon resonance (LSPR) mode are also studied. Results show two resonance peaks in the extinction spectra of ACND: the higher-energy anti-bonding mode and the lower-energy bonding mode. The interaction of two hybridization plasmonic resonance modes produces an asymmetric line shape in the extinction spectra, which is considered to be a Fano resonance profile.

Dielectric domain distribution on Au nanoparticles revealed by localized surface plasmon resonance

2018 ◽  
Vol 6 (44) ◽  
pp. 12038-12044 ◽  
Author(s):  
Yi Luo ◽  
Yadong Zhou ◽  
Shengli Zou ◽  
Jing Zhao
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Au Nanoparticles ◽  
Extinction Spectrum ◽  
Localized Surface Plasmon ◽  
Uniform Layer

The LSPR of Au nanospheres shows almost no shift in the extinction spectrum with attachment of a silica domain but considerable shift with a uniform layer of silica, indicating LSPR can be used to differentiate the segregated/uniform dielectric distribution.

scholarly journals Protection of silver and gold LSPR biosensors in corrosive NaCl environment by short alkanethiol molecules; characterized by extinction spectrum, helium ion microscopy and SERS

RSC Advances ◽  
2019 ◽  
Vol 9 (17) ◽  
pp. 9565-9576 ◽  
Author(s):  
Hazuki Haraguchi ◽  
Natalie Frese ◽  
Armin Gölzhäuser ◽  
Hiroyuki Takei
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Extinction Spectrum ◽  
Localized Surface Plasmon ◽  
Biologically Relevant ◽  
Helium Ion ◽  
Ion Microscopy ◽  
Surface Plasmon Resonance Sensors

We investigated the utility of localized surface plasmon resonance sensors in a biologically relevant environment containing NaCl.

scholarly journals Fabrication of Gold Nanodot Array for the Localized Surface Plasmon Resonance

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Young Min Bae ◽  
Kyeong-Hee Lee ◽  
Jeongwon Yang ◽  
Duchang Heo
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Extinction Spectrum ◽  
Peak Position ◽  
Localized Surface Plasmon ◽  
Large Area ◽  
Nanodot Array ◽  
Extinction Peak

Localized surface plasmon resonance (LSPR) is a promising method for detecting antigen-antibody binding in label-free biosensors. In this study, the fabrication of a LSPR substrate with a gold nanodot array through the lift-off process of an alumina mask is reported. The substrate showed an extinction peak in its extinction spectrum, and the peak position was dependent on the height of the gold nanodot array, and the change of extinction peak with the height could be predicted by the numerical simulation. In addition, the peak position was observed to be red-shifted with the increasing RIU value of the medium surrounding the gold nanodot array. In particular, the peak position in the 10 nm thick gold nanodot array was approximately 710 nm in air, and the sensitivity, defined as the ratio of the shift of peak position to the RIU of the medium, was 323.6 nm/RIU. The fabrication procedure could be applied to fabricate the LSPR substrates with a large area.

Localized Surface Plasmon Resonance Properties of Concentric Dual-Ring Nanodisk

NANO ◽  
2019 ◽  
Vol 14 (06) ◽  
pp. 1950071
Author(s):  
Haiwei Mu ◽  
Jianxin Wang ◽  
Qiang Liu ◽  
Wei Liu ◽  
Xianli Li ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Near Infrared ◽  
Structural Parameters ◽  
Dipole Approximation ◽  
Localized Surface Plasmon ◽  
Sensing Applications ◽  
Dual Ring

The extinction spectral properties based on localized surface plasmon resonance (LSPR) of the concentric dual-ring nanodisk (CDRN) structure are investigated by discrete dipole approximation (DDA) and plasmon hybridization theory. The CDRN nanostructure shows flexible tunable multipole resonances in the near-infrared regime and the coupled resonance wavelengths depend on the structural parameters of the nanostructure, which has great potential in multichannel LSPR-based bio-sensing applications.

Strain‐Induced Modulation of Localized Surface Plasmon Resonance in Ultrathin Hexagonal Gold Nanoplates

2021 ◽  
pp. 2100653
Author(s):  
Gyeong‐Su Park ◽  
Kyung Suk Min ◽  
Hyuksang Kwon ◽  
Sangwoon Yoon ◽  
Sangwon Park ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon

An Eye-Shaped Ultra-Sensitive Localized Surface Plasmon Resonance–Based Biochemical Sensor

Plasmonics ◽  
2021 ◽  
Author(s):  
Mohammad Rakibul Islam ◽  
Fahim Yasir ◽  
Md. Rakib Hossain Antor ◽  
Mahmudul Hassan Turja ◽  
Ashikur Rahman ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Biochemical Sensor
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