TY - JOUR AU - Cunningham, Alastair AU - Mühlig, Stefan AU - Rockstuhl, Carsten AU - Bürgi, Thomas TI - Coupling of Plasmon Resonances in Tunable Layered Arrays of Gold Nanoparticles PY - 2011 JF - Journal of Physical Chemistry C JA - J. Phys. Chem. C SN - 1932-7447 VL - 115 IS - 18 SP - 8955 EP - 8960 L1 - http://pubs.acs.org/doi/pdf/10.1021/jp2011364 L2 - http://pubs.acs.org/doi/full/10.1021/jp2011364 L3 - http://pubs.acs.org/doi/abs/10.1021/jp2011364 M3 - 10.1021/jp2011364 UR - http://dx.doi.org/10.1021/jp2011364 N2 - Using bottom-up and self-assembly processes, large scale layered arrays of strongly coupled gold nanoparticles with controllable dimensions were fabricated. By carefully adjusting the distance between adjacent gold nanoparticle arrays, it is possible to control the coupling of the localized surface plasmon polariton resonance as sustained by individual gold nanoparticles. A greater interaction is observed at smaller separations, leading to a well pronounced shift in the spectral position of resonances that can be adjusted with high precision. Simulations showed good agreement with experimental observations in an in-depth investigation of such structures, suggesting minimal separations of only one nanometer are achieved. ID - 1232 ER -