Well-Defined Multibranched Gold with Surface Plasmon Resonance in Near-Infrared Region from Seeding Growth Approach Using Gyroid Block Copolymer Template

2013 ◽  
Vol 25 (12) ◽  
pp. 1780-1786 ◽  
Author(s):  
Han-Yu Hsueh ◽  
Hung-Ying Chen ◽  
Yu-Chueh Hung ◽  
Yi-Chun Ling ◽  
Shangjr Gwo ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Block Copolymer ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Near Infrared ◽  
Infrared Region ◽  
Near Infrared Region ◽  
Growth Approach

scholarly journals Precise Control of Copper-Localized Surface Plasmon Resonance in the Near Infrared Region for Enhancement of Up-Conversion Luminescence

Metals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 628
Author(s):  
Yuyong Pan ◽  
Lingling Chu ◽  
Jiliang Liu ◽  
Baize Lv ◽  
Laurence A. Belfiore ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Fluorescence Intensity ◽  
Plasmon Resonance ◽  
Nanocomposite Film ◽  
Near Infrared ◽  
Copper Film ◽  
Infrared Region ◽  
Localized Surface Plasmon ◽  
Near Infrared Region

The surface plasmon resonance of copper in the near infrared region provides a novel method for enhancement of up-conversion luminescence compared to using gold and silver, as the former grants significant cost savings. In this study, we made a flat Cu film covered TiO2 to enhance the up-conversion fluorescence intensity. The results show that the deposition of copper/TiO2 dioxide nanocomposite film prepared via spin-coating has no effect on the structure of NaGdF4:Er3+, Yb3+. The absorption wavelength of the copper film moved from the original visible wavelength (~600 nm) range to the infrared wavelength after covering TiO2, and most obviously, the copper film covered two layers of TiO2 by about 16 nm; the peak of the absorption appeared at 835 nm due to the enhanced excitation field. The behavior of the nanocomposite film with NaGdF4:Er3+ and Yb3+ under 980 nm excitation was investigated; it provides a novel way for studying mental-enhanced fluorescence. Besides, the peaks of the fluorescence spectrum show different emissions at 542 nm and 660 nm, respectively. The copper nanoparticles-covered TiO2 layer can obviously enhance the fluorescence intensity, and the maximum enhancement factors of emission of NaGdF4:Er3+ and Yb3+ nanoparticles are 3.1 and 1.9 on the nanocomposite film, respectively.

scholarly journals Irregular hexagonal core based surface plasmon resonance sensor in near-infrared region

2021 ◽  
Vol 23 ◽  
pp. 103983
Author(s):  
K.M. Mustafizur Rahman ◽  
M. Shah Alam ◽  
Rajib Ahmed ◽  
M. Asiful Islam
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Near Infrared ◽  
Infrared Region ◽  
Surface Plasmon Resonance Sensor ◽  
Resonance Sensor ◽  
Near Infrared Region

scholarly journals D-shaped Photonic Crystal Fiber Based on Surface Plasmon Resonance Sensor with Metal Nanodimers Array

2021 ◽  
Author(s):  
Shengxi Jiao ◽  
Xinzhi Li ◽  
Hanrui Yang ◽  
Hairui Fang ◽  
Shibo Xu
Keyword(s):  
Surface Plasmon Resonance ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Near Infrared ◽  
Near Field ◽  
Infrared Region ◽  
Crystal Fiber ◽  
Resonance Sensor

Abstract A D-shaped photonic crystal fiber (PCF) sensor with metal nanodimers array is presented and demonstrated for analyte detection with refractive index (RI) ranging from 1.28 to 1.37. In contrast to previous D-shaped PCF sensors, the coupling system is composed of Au-Ag nanodimers array, Silver (Ag) nanowires are arranged under the Gold (Au) array on the D-shaped surface, which cause the electric field within a confined volume is strongly enhanced, and the sensitivity of the surface plasmon resonance to dielectric environment of this volume to be promoted by near-field coupling. The finite element method (FEM) is adopted to numerical investigate the coupling characteristics and sensing performance of the PCF sensor in the near-infrared region. An average wavelength sensitivity (WS) of 14021 nm/RIU is attained,and a maximum WS of 16380 nm/RIU is acquired with a supernal RI resolution of 6.11×10 -6 RIU, which has an excellent application prospect in the fields of biological, biochemical and environmental detection.

Sign in / Sign up

Export Citation Format

Share Document