Plasmon effect

A large number of possible applications of arrays of nanoparticles on solid surfaces is reviewed in Refs. [23,24]. They include, for example, development of new (elect-ro)catalytical systems for applications as chemical sensors, biosensors or (bio)fuel cells, preparation of optical biosensors exploiting localized plasmonic effect or surface enhanced Raman scattering, development of single electron devices and electroluminescent structures and many other applications. 

In a second experiment, Cy5-labelled antiBSA antibodies were immobilised on a silanised glass slide precoated with metallic nanoislands using a polydimethylsiloxane (PDMS) flow-cell. The antibody solution was left for 1 hour to attach and then the cell was flushed with deionised water. The slide was then dried with N2. For this experiment, a portion of the slide was not coated with metallic nanoislands, in order to act as a reference. Figure 20 shows the image recorded using the fluorescence laser scanner mentioned previously. The enhancement in fluorescence emission between those areas with and without nanoislands (B and A, respectively) is again evident. For both chips, an enhancement factor of approximately 8 was recorded. There is considerable interest in the elucidation and exploitation of plasmonic effects for fluorescence-based biosensors and other applications. 

Superenhancement due to light harvesting in FRET and plasmonic effects and superquenching due to homo-FRET with the participation of a quencher. 

Barnett A, Matveeva EG, Gryczynski I, Gryczynski Z, Goldys EM (2007) Coupled plasmon effects for the enhancement of fluorescent immunoassays. Phys B Condens Matter 394 297-300... 

Langreth, D. C. Theory of plasmon effects in high energy spectroscopy. In Collective properties of physical systems. Lundqvist, B., Lundqvist, S. (eds.), pp. 210-222. Nobel Symposium 24. Stockholm. The Nobel Foundation, Academic Press 1973... 

Surface plasmon effects result in useful photothermal effects [73] and have been used to enhance the surface sensitivity of various spectroscopic measurements [74], including fluorescence, Raman scattering, and second-harmonic generation. 

Liu W.-C., Ng M.-Y., and Tsai D. P. (2004). Surface Plasmon Effects on the Far-Field Signals of AgOx-Type Super Resolution Near-Field Structure. Jpn. J. Appl Phys. 43 4713-4717. 

MODELING OF PLASMONIC EFFECTS ON MOLECULAR PHOTOPHYSICS SEPARATION OF ABSORPTION, EMISSIVE RATE ENHANCEMENT AND EXCITED STATE QUENCHING EFFECTS... 

The excitation of the surface plasmon effect also induces strongly enhanced fluorescence properties of gold nanoparticles due to the enhanconent in the radiative rate of the inter-band electronic transitions relative to that in bulk metals. Metal nanoparticles, especially gold nanorods exhibit enhanced two-photon luminescence (TPL) and multi-photon luminescoice (MPL) [7, 8]. Strongly-enhanced TPL has been observed from individual particles [9, 10] and particle solutions [11] under femtosecond NIR laser excitation. This observation raises the possibility of nonlinear optical imaging in the NIR region, where water and biomolecules have... 

Le Ru E, Etchegoin P (2008) Principles of surface enhanced Raman spectroscopy and related plasmonic effects. Elsevier Science, New York... 

The results in Fig. 1.12 show how plasmonic effects in MWCNT arrays can be harnessed to control light in an effective manner. Ideally we could now add a... 

A very effective demonstration of enhanced plasmonic effects from laterally illuminated MWCNTs has been demonstrated by the diffraction patterns observed from a 2D Penrose tiled quasicrystal structure [29]. This stmcture has been seen... 

The plasmon effect enables highly sensitive SERS detection at the single-molecule level. 

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