Symmetry Breaking-Induced Plasmonic Mode Splitting in Coupled Gold–Silver Alloy Nanodisk Array for Ultrasensitive RGB Colorimetric Biosensing

2018 ◽  
Vol 11 (2) ◽  
pp. 2273-2281 ◽  
Author(s):  
Ibrahim Misbah ◽  
Fusheng Zhao ◽  
Wei-Chuan Shih
Keyword(s):  
Symmetry Breaking ◽  
Silver Alloy ◽  
Plasmonic Mode ◽  
Mode Splitting ◽  
Gold Silver ◽  
Colorimetric Biosensing

scholarly journals Gold-Silver Alloy Film Based Colorful SPR Imaging Sensor with High Sensitivity for Quantitative Chemical and Biological Detection

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 931
Author(s):  
Shuang Liang ◽  
Ran Gao ◽  
Mengying Zhang ◽  
Ning Xue ◽  
Zhi-mei Qi
Keyword(s):  
Spectral Range ◽  
Gold Film ◽  
Color Image ◽  
Quantitative Relationship ◽  
Alloy Film ◽  
Resonant Wavelength ◽  
Quantitative Detection ◽  
Silver Alloy ◽  
Refractive Index Sensitivity ◽  
Gold Silver

A gold-silver alloy film based spectral surface plasmon resonance imaging (SPRi) sensor has been prepared for in-situ quantitative detection of biochemical analytes at the sensor surface. This novel sensor has lower detection cost yet higher sensitivity relative to the conventional counterpart with a gold film. Using the laboratory-made multifunctional SPR sensing platform, both the resonant color images and the resonant spectra for the Au-Ag alloy film were measured at different incident angles. The quantitative relationship between the resonant wavelength and the average hue of corresponding resonant color image was established. With this relationship the most hue-sensitive spectral range was determined. After setting the initial resonant wavelength in the hue-sensitive spectral range, the refractive-index sensitivity of the Au-Ag alloy film based SPRi sensor was measured as Δhue/Δnc = 29,879/RIU, being 8 times higher than that obtained with the gold-film SPRi sensor. The immunodetection of benzo(a)pyrene (BaP) in water was fulfilled using the Au-Ag alloy film based SPRi sensor. The average hue of the SPR color image linearly increases with increasing the BaP concentration up to C = 0.5 μg/L and the slope is Δhue/ΔC = 132.2/(μg/L). The sensor is responsive to a change of BaP concentration as low as ΔC = 0.01 μg/L.

Tuning of LSPR of gold-silver alloy nanoparticles with their composition

2019 ◽  
Author(s):  
Devender Kumar ◽  
Saroj Bala ◽  
Heena Wadhwa ◽  
Geeta Kandhol ◽  
Suman Mahendia ◽  
...  
Keyword(s):  
Alloy Nanoparticles ◽  
Silver Alloy ◽  
Gold Silver

Broadband tunable plasmonic substrate using self-assembled gold–silver alloy nanoparticles

2019 ◽  
Vol 19 (11) ◽  
pp. 1245-1251 ◽  
Author(s):  
Phuoc Cao Van ◽  
Srivathsava Surabhi ◽  
Viet Dong Quoc ◽  
Jae Woong Lee ◽  
Cheong Cheon Tae ◽  
...  
Keyword(s):  
Alloy Nanoparticles ◽  
Silver Alloy ◽  
Gold Silver ◽  
Self Assembled

On demand release of ionic silver from gold-silver alloy nanoparticles: fundamental antibacterial mechanisms study

2020 ◽  
Vol 16 ◽  
pp. 100237 ◽  
Author(s):  
S. Panicker ◽  
I.M. Ahmady ◽  
C. Han ◽  
M. Chehimi ◽  
A.A. Mohamed
Keyword(s):  
Alloy Nanoparticles ◽  
Silver Alloy ◽  
Ionic Silver ◽  
On Demand ◽  
Gold Silver

Symmetry breaking induced mode splitting based on a plasmonic waveguide system

2016 ◽  
Vol 49 (14) ◽  
pp. 145109 ◽  
Author(s):  
Zhao Chen ◽  
Mingshu Chen ◽  
Jia Li ◽  
Lulu Wang ◽  
Rongzhen Jiao ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Plasmonic Waveguide ◽  
Mode Splitting ◽  
Waveguide System
Sign in / Sign up

Export Citation Format

Share Document