14 February 2007 Plasmon resonance enhancement of nonlinear properties of amino acids
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Here we analyze the influence of 9 nm (mean diameter) silver particles on the nonlinear properties of intrinsic cell molecules. A novel high sensitivity thermal managed eclipse Z-scan technique with a femtosecond laser system was used to analyze the nonlinear susceptibility of water solution of fluorescent and non-fluorescent amino acids (Tryptophan, Tyrosine, Phenylalanine, Proline and Histidine) with different concentration of silver nanoparticles. The generalized Maxwell Garnett model is used to explain the behavior of the measured nonlinear refractive index with the change of the nanoparticles concentration in the sample.
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Renato E. de Araujo, Diego Rativa, and Anderson S. L. Gomes "Plasmon resonance enhancement of nonlinear properties of amino acids", Proc. SPIE 6450, Plasmonics in Biology and Medicine IV, 64500G (14 February 2007); doi: 10.1117/12.699517; https://doi.org/10.1117/12.699517

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