Surface Plasmon Resonance of Gold Nanoparticle Arrays Partially Embedded in Quartz Substrates

2007 ◽  
Vol 111 (9) ◽  
pp. 3658-3664 ◽  
Author(s):  
Maria-Victoria Meli ◽  
R. Bruce Lennox
Keyword(s):  
Surface Plasmon Resonance ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Nanoparticle Arrays ◽  
Quartz Substrates

scholarly journals Correction: Investigation of plasmonic signal enhancement based on long range surface plasmon resonance with gold nanoparticle tags

2016 ◽  
Vol 4 (44) ◽  
pp. 10562-10562
Author(s):  
Chih-Tsung Yang ◽  
Lin Wu ◽  
Ping Bai ◽  
Benjamin Thierry
Keyword(s):  
Surface Plasmon Resonance ◽  
Gold Nanoparticle ◽  
Long Range ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Signal Enhancement

Correction for ‘Investigation of plasmonic signal enhancement based on long range surface plasmon resonance with gold nanoparticle tags’ by Chih-Tsung Yang et al., J. Mater. Chem. C, 2016, 4, 9897–9904.

Surface Plasmon Resonance Enhanced Real-Time Photoelectrochemical Protein Sensing by Gold Nanoparticle-Decorated TiO2 Nanowires

2014 ◽  
Vol 86 (13) ◽  
pp. 6633-6639 ◽  
Author(s):  
Peimei Da ◽  
Wenjie Li ◽  
Xuan Lin ◽  
Yongcheng Wang ◽  
Jing Tang ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Real Time ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Tio2 Nanowires ◽  
Protein Sensing

scholarly journals Femtomolar and selective dopamine detection by a gold nanoparticle enhanced surface plasmon resonance aptasensor

2018 ◽  
Author(s):  
Yong Cao ◽  
Mark T. McDermott
Keyword(s):  
Surface Plasmon Resonance ◽  
Detection Limit ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Cdna Probe ◽  
Dna Aptamer ◽  
Dopamine Detection ◽  
Calibration Curves ◽  
20 Nm

ABSTRACTUltrasensitive and selective detection and quantification of dopamine (DA) plays a key role in monitoring neurodegenerative diseases. However, the detection limit reported for DA detection is typically in the lower nM range. Pushing the detection limit to pM or lower for this particular target to cover the physiological levels (< 130 pM) is significant. Herein, DA DNA aptamer (DAAPT) gold nanoparticle (AuNP) conjugate is utilized to enhance the surface plasmon resonance (SPR) signal, which enables to detect and quantify DA in the femtomolar (200 fM) to picomolar range. To the best of our knowledge, this is the lowest detection limit achieved for SPR sensing of dopamine. The as-prepared 10 nm DAAPT-AuNP conjugate demonstrates strong binding affinity (Kd = 3.1 ± 1.4 nM) to the complementary DNA (cDNA) probe on gold chip. The cDNA probe is immobilized to the chip via polydopamine surface chemistry, which allows the Michael addition of any primary amine-terminated biomolecules. By adjusting the concentration of the DAAPT-AuNP conjugate, two calibration curves are generated with dynamic ranges from 100 µM to 2 mM, and from 200 fM to 20 nM, respectively. Both calibration curves have negative slopes, showing good agreement to a dose-response curve in an enzyme inhibition assay. In addition, the sensing strategy is evaluated to be specific for DA detection using a series of DA analogs and other metabolites as potential interferences.

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