Flexible plasmonic modulators induced by the thermomechanical effect

Nanoscale ◽  
2019 ◽  
Vol 11 (24) ◽  
pp. 11437-11444 ◽  
Author(s):  
Qiushun Zou ◽  
Wenjie Liu ◽  
Yang Shen ◽  
Chongjun Jin
Keyword(s):  
Plasmon Resonance ◽  
Joule Heat ◽  
Gold Nanowires ◽  
Pdms Substrate ◽  
Local Expansion ◽  
Strength Change ◽  
Thermomechanical Effect

In a reconfigurable flexible plasmonic modulator, the gap between the gold nanowires is widen by local expansion of PDMS substrate caused by current-induced local Joule heat, leading to a strength change of plasmon resonance.

scholarly journals Surface plasmon resonance-based microfiber sensor with enhanced sensitivity by gold nanowires

2018 ◽  
Vol 8 (12) ◽  
pp. 3927 ◽  
Author(s):  
Yuansong Zhan ◽  
Yongliang Li ◽  
Zhuoqi Wu ◽  
Si Hu ◽  
Zhibin Li ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Gold Nanowires ◽  
Enhanced Sensitivity

scholarly journals Gold Nanowires: Their Synthesis and Surface Plasmon Resonances

2009 ◽  
Vol 8 (2 and 3) ◽  
Author(s):  
Ali Faghih ◽  
Edo Waks
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Indium Arsenide ◽  
Plasmon Resonance ◽  
Nano Particles ◽  
Gold Nanowires ◽  
Plasmon Resonances ◽  
Growth Method ◽  
Nano Rods ◽  
Nano Wires

The objective of the project was to fabricate gold nano-rods and study the optical properties of gold nano-particles when coupled to Indium Arsenide quantum dots. The gold nano-rods were synthesized by a seed-mediated growth method using CTAB and BDAC as the surfactants, and the feasibility of changing the aspect ratio of the rods and their Plasmon resonance frequency was studied by varying the concentrations of these two surfactants. Finally, gold nano-rods with longitudinal Plasmon resonance of 940 nm were synthesized. Next, we studied the feasibility of coupling gold nano-wires to indium arsenide quantum dots for investigating their optical properties and studying the spontaneous emission enhancement of InAs QDs in the presence of the plasmon resonances of gold nano-wires. The sample containing nano-wires coupled to quantum dots was excited by red laser, and the emission was passed through a spectrometer and the spectrum was obtained.

scholarly journals Analysis of High Sensitivity Photonic Crystal Fiber Sensor Based on Surface Plasmon Resonance of Refractive Indexes of Liquids

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2922 ◽  
Author(s):  
Xin Yan ◽  
Bin Li ◽  
Tonglei Cheng ◽  
Shuguang Li
Keyword(s):  
Surface Plasmon Resonance ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Spectral Sensitivity ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
High Sensitivity ◽  
Gold Nanowires ◽  
Crystal Fiber ◽  
Sensor Structure

A photonic crystal fiber (PCF) sensor based on gold nanowires able to detect changes in surface plasmon resonance (SPR) was proposed and numerically investigated through the finite element method. To facilitate real-time detection, the analyte in this sensor was located outside the optical fiber. The effects of diameters of both air hole and gold wires on the sensing characteristics of the sensor were discussed. The sensor was designed to detect liquids with refractive indexes ranging between 1.33 and 1.36. The numerical simulations indicated that sensor structure improved its functionality. The maximum spectral sensitivity reached 9200 nm/RIU over the entire refractive index range. The average spectral sensitivity was estimated to be 5933 nm/RIU, and corresponded to a sensor resolution of 2.81 × 10−6 RIU. These findings look very promising for future use in detection of liquid.

Ex-centric core photonic crystal fiber sensor with gold nanowires based on surface plasmon resonance

Optik ◽  
2019 ◽  
Vol 196 ◽  
pp. 163173 ◽  
Author(s):  
Chao Liu ◽  
Guanglai Fu ◽  
Famei Wang ◽  
Zao Yi ◽  
Chunhong Xu ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Fiber Sensor ◽  
Gold Nanowires ◽  
Crystal Fiber

Comparison of sensitivity of the refractometric methods of frustrated total internal reflection and surface plasmon resonance

2020 ◽  
pp. 44-49
Author(s):  
I. N. Pavlov
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Total Internal Reflection ◽  
Resonance Method ◽  
Internal Reflection ◽  
Optical Methods ◽  
Thin Boundary Layer ◽  
Experimental Conditions ◽  
Frustrated Total Internal Reflection

Two optical methods, namely surface plasmon resonance imaging and frustrated total internal reflection, are described in the paper in terms of comparing their sensitivity to change of refractive index of a thin boundary layer of an investigated medium. It is shown that, despite the fact that the theoretically calculated sensitivity is higher for the frustrated total internal reflection method, and the fact that usually in practice the surface plasmon resonance method, on the contrary, is considered more sensitive, under the same experimental conditions both methods show a similar result.

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