Article. H. Mertens et al Infrared surface plasmons in two-dimensional silver nanoparticle arrays in silicon // Applied Physics Letters. 2004. Vol. 85, N. 8, P. 1317-1319.We present two-dimensional arrays of silver nanoparticles embedded in amorphous silicon,
fabricated by a sequential Si/Ag/ Si electron-beam evaporation process. The particle arrays exhibit
surface plasmon resonance spectra in the near-infrared s0.9 eVd, with tails extending below 0.5 eV.
The data are compared with calculations that take into account measured particle size, shape
anisotropy, and separation. It is concluded that the large redshift is mainly due to the high refractive
index of the matrix, with shape anisotropy and interparticle coupling contributing several tenths of
an electron volt. This work enables plasmon-related applications at the telecommunication
wavelength of 1.5 mm s0.8 eVd. © 2004 American Institute of Physics. [DOI: 10.1063/1.1784542]
