Dimer plasmon

Ikeda, K, Takase, M., Sawai, Y, Nahika, H., Murakoshi, K. and Uosaki, K. (2007) Hyper-Raman scattering enhanced hy anisotropic dimer plasmons on artificial nanostructures./. Chem. Phys., 127, 111103/1-111103/4. 

Ikeda K, Takase M, Sawai Y, Nabika H, Murakoshi K, Uosaki K (2007) Hyper-Raman scattering enhanced by anisotropic dimer-plasmons on artificial nanostmctures. J Chem Phys 127 111103... 

Using this screening approach, a fourfold amplification of the designed library member A-P was observed. Interestingly, a fivefold amplification of the peptidic dimer P-P was also observed. Amplification factors correlated well with dissociation constants (K ) subsequently measured by surface plasmon resonance (SPR) A-P was found to have a of 30 [tM, while the more strongly amplified P-P was found to have a of 22.5 [tM. 

Fig. 10.2 (a) Schematic of simplified dimer geometry formed by two spheres of radius a separated by g for electromagnetic calculation, (b) Enhancement factor at the hot spot formed between two silver 25-nm spheres separated by 2 nm. The dipolar plasmon resonance occurs at = 448 rnn with other peaks due to higher order interactions (Figure reproduced from Ref. [58])... 

Xie, Z. and Reed, J. C. (2000) Analysis of dimerization of Bcl-2 family proteins by surface plasmon resonance. Methods Enzymol. 322, 266-274. 

The transient Ag3 + ion have an intense absorption spectrum with two maxima, at 310 and at 265 nm. Its second-order decay leads to the cluster Ag4 +. Under total reduction conditions the neutral dimer Ag2 is observed at 275 and 310 nm. The optical transitions of low-nuclearity silver oligomers, the rate constants, and the extinction coefficients are derived from adjustment between experimental (Fig. 2, bottom) and calculated absorption spectrum evolution. An even number of atoms favors the high stability of the magic hydrated clusters Ag4 + (275 nm), Agg + and possibly Agi4 + (Fig. 2, top). After a longer time, the plasmon... 

Rao J, Yan L, Xu B, Whitesides GM. Using surface plasmon resonance to study the binding of vancomycin and its dimer to self-assembled monolayers presenting d-Ala-d-Ala. 

From close inspection of the image, it is found that the highest enhancement occurs at the isolated dimer (A), and the enhancement observed at the rim or at the defect sites in the assembly is lower. This observation implies that the enhancement is the highest in the dimer and becomes lower with increasing size of the assembly. The finding may have some correlation with the relatively low SERS enhancement reported in close-packed assemblies. Plasmon localization at the rim of the assembly may have some similarities with photon localizations at the boundaries of photonic... 

Zuloaga, J., Prodan, E. and Nordlander, P. (2009) Qnantnm description of the plasmon resonances of a nanoparticle dimer. Nano Letters, 9, 887-891. 

Nordlander P, Oubre C, Prodan E, Li K, Stockman Ml. Plasmon hybridization in nanoparticle dimers. Nano Lett 2004 4 899-903. 

Chen F, Alemu N, Johnston RL. Collective plasmon modes in a compositionally asymmetric nanoparticle dimer. AIPAdv 2011 1 032134. 

T. P. Rivera, 0. Lecarme, J. Hartmann, R. L. Inglebert, and D. Peyrade, Spectroscopic studies of plasmonic interactions in colloidal dimers fabricated by convective-capillary force assembly. Microelectron. Eng., 86,1089-1092 [2009J. 

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