TY - JOUR
T1 - Optical properties of square lattices of gold nanoparticles
AU - Niklasson, G. A.
AU - Bobbert, P. A.
AU - Craighead, H. G.
N1 - Funding Information:
This work was financially supportedb y the Swedish Natural Science Research Council.T he experimentawl ork wasc arriedo ut at Bell LaboratoriesH, olmdel,N .J. in 1983-1984.W e alppreciatvea luabled iscussionsw ith D. BedeauxJ,. Vlieger, P.F. Liao and M.B. Sterna ndt hea ssistancoef P.M. Mankievicha ndJ .E. Sweeney.
PY - 1999
Y1 - 1999
N2 - We reanalyse optical measurements on two-dimensional lattices of ultrafine gold particles, produced by electron beam lithography. The spectra exhibit a distinct absorption peak due to the localized plasma resonance of the conduction electrons in the particles. The theoretical modeling used rigorous solutions, in the long-wavelength limit, for the polarizability of oblate spheroids and truncated spheres on a substrate. The dipole-dipole interactions between the particles in the square lattice were taken into account. We find good agreement between experimental and theoretical absorption peak positions for the case of oblate spheroids, but not for truncated spheres. Peak widths and minimum transmittances also show satisfactory agreement with theory.
AB - We reanalyse optical measurements on two-dimensional lattices of ultrafine gold particles, produced by electron beam lithography. The spectra exhibit a distinct absorption peak due to the localized plasma resonance of the conduction electrons in the particles. The theoretical modeling used rigorous solutions, in the long-wavelength limit, for the polarizability of oblate spheroids and truncated spheres on a substrate. The dipole-dipole interactions between the particles in the square lattice were taken into account. We find good agreement between experimental and theoretical absorption peak positions for the case of oblate spheroids, but not for truncated spheres. Peak widths and minimum transmittances also show satisfactory agreement with theory.
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U2 - 10.1016/S0965-9773(99)00226-3
DO - 10.1016/S0965-9773(99)00226-3
M3 - Conference article
AN - SCOPUS:0032593997
SN - 0965-9773
VL - 12
SP - 725
EP - 730
JO - Nanostructured Materials
JF - Nanostructured Materials
IS - 5
T2 - Proceedings of the 1998 4th International Conference on Nanostructured Materials (NANO '98)
Y2 - 14 June 1998 through 19 June 1998
ER -