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Through numerical simulations we have shown that particle plasmon resonance wavelength is dependent mostly
on the largest particle in an array of gold nanodisks. Mixing different sized nanodisks may shift the resonance
peak wavelength from a few nanometers to tens of nanometers. The effect of period to the resonance peak
strength was found to be dependent on the disk diameter in unexpected way. With smaller nanodisks increasing
the period decreases peak absorption, but with larger still greatly sub-wavelength particles increasing the period
can increase the absorption at resonance peak while decreasing absorption elsewhere on the spectrum giving
great selective contrast.
Joonas Lehtolahti,Janne Laukkanen,Martti Kauranen, andMarkku Kuittinen
"Tuning localized plasmon resonance peaks in golden nanoparticle arrays", Proc. SPIE 8429, Optical Modelling and Design II, 842911 (7 May 2012); https://doi.org/10.1117/12.924511
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Joonas Lehtolahti, Janne Laukkanen, Martti Kauranen, Markku Kuittinen, "Tuning localized plasmon resonance peaks in golden nanoparticle arrays," Proc. SPIE 8429, Optical Modelling and Design II, 842911 (7 May 2012); https://doi.org/10.1117/12.924511