@article{oai:nitech.repo.nii.ac.jp:00005198,
 author = {Hamanaka, Yasushi and Fukuta, K. and Nakamura, A. and Liz-Marzan, L. M. and Mulvaney, P.},
 issue = {24},
 journal = {APPLIED PHYSICS LETTERS},
 month = {Jun},
 note = {Third-order nonlinear optical susceptibilities (χ(3)) and response times have been investigated for silica-capped Au nanoparticles for various volume fractions, p, of Au nanoparticles ranging from 0.027 to 0.66. The imaginary part of χ(3)(Imχ(3)) around the surface plasmon resonance increases with increasing p up to 0.34, and decreases for p>0.39. In addition to the local field enhancement around the surface plasmon resonance in the composite system, an additional enhancement of Imχ(3) due to the interaction between nanoparticles for p<0.39 is observed., application/pdf},
 pages = {4938--4940},
 title = {Enhancement  of third-order nonlinear optical susceptibilities in silica-capped Au nanoparticle films with very high concentrations},
 volume = {84},
 year = {2004}
}