Surface plasmon resonance of colloidal Au-modified gold films

Lyon, L. Andrew; Musick, Michael D.; Smith, Patrick C.; Reiss, Brian D.; Peña, David J.; Natan, Michael J.

doi:10.1016/s0925-4005(98)00329-3

Cited by 158 publications

(94 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For this reason, there has been much interest in metal particle tags. Most notably, Lyon et al [5][6][7] investigated the use of colloidal gold nanoparticles as amplification tags in SPR-based detection. Optical absorptive effects of the particles resulted in dramatic changes in the shape of the SPR curves.…”

Section: Introductionmentioning

confidence: 99%

Resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance-based detection

Fu¹,

Ramsey²,

Chen³

et al. 2007

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

We describe the resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance (SPR)-based detection using both modeling and experimental results. The particles, gold nanocages, have a significant absorption cross-section in the nearinfrared (NIR), resulting in a wavelength-dependent refractive index as measured by SPR. The SPR signal due to the nanocages varies by 4-fold over resonance wavelengths from 650 nm to 950 nm. The greatest SPR signal occurs at the longest resonance wavelengths; its magnitude is due to the inherent increase in sensitivity of SPR on gold with increasing wavelength and the optical absorption properties of the nanocages.

show abstract

Section: Introductionmentioning

confidence: 99%

Resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance-based detection

Fu¹,

Ramsey²,

Chen³

et al. 2007

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

show abstract

“…These labels obviously increase the optical constant in the vicinity of the metal surface and also can induce a plasmonic coupling of LSP modes with propagating SPPs on the flat metal film, resulting in additional SPR shifts. A wide range of nanoparticles have been introduced, including colloidal metallic nanoparticles [28,29], latex particles [30], and dye-doped polymer particles [31].…”

Section: Colloidal Nanoparticle-enhanced Lspr Biosensorsmentioning

confidence: 99%

Development of Nanostructured Plasmonic Substrates for Enhanced Optical Biosensing

Byun¹

2010

Journal of the Optical Society of Korea

View full text Add to dashboard Cite

Plasmonic-based biosensing technologies have been successfully commercialized and applied for monitoring various biomolecular interactions occurring at a sensor surface. In particular, the recent advances in nanofabrication methods and nanoparticle syntheses provide a new route to overcome the limitations of a conventional surface plasmon resonance biosensor, such as detection limit, sensitivity, selectivity, and throughput. In this paper, optical and physical properties of plasmonic nanostructures and their contributions to a realization of enhanced optical detection platforms are reviewed. Following vast surveys of the exploitation of metallic nanostructures supporting localized field enhancement, we will propose an outlook for future directions associated with a development of new types of plasmonic sensing substrates.

show abstract

“…Lyon et al [6][7][8] first demonstrated the utility of colloidal gold nanoparticles for amplification of SPR signals on planar gold surfaces. They demonstrated significant modulation of the SPR curves that included broadening and an increase in the minimum reflectivity.…”

Section: Introductionmentioning

confidence: 99%

Dependence of the signal amplification potential of colloidal gold nanoparticles on resonance wavelength in surface plasmon resonance-based detection

Ramsey²,

Yager³

2007

Analytica Chimica Acta

View full text Add to dashboard Cite

We demonstrate the resonance wavelength-dependent signal of colloidal gold nanoparticles adsorbed to a planar gold surface in surface plasmon resonance (SPR)-based detection. Experimental measurements of the SPR signal as a function of particle surface coverage are presented for three different resonance wavelengths. The SPR signal due to the colloidal gold nanoparticles varies across the resonance wavelengths of 650 nm, 770 nm, and 920 nm. The experimental SPR curves show good agreement with the results of a Lorentz absorbance model at the lower particle surface coverages investigated. The results demonstrate an almost 2-fold signal difference for a subset of the experimental conditions explored.

show abstract

Surface plasmon resonance of colloidal Au-modified gold films

Cited by 158 publications

References 27 publications

Resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance-based detection

Resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance-based detection

Development of Nanostructured Plasmonic Substrates for Enhanced Optical Biosensing

Dependence of the signal amplification potential of colloidal gold nanoparticles on resonance wavelength in surface plasmon resonance-based detection

Contact Info

Product

Resources

About