An approach has been devised to create a hexagonal pattern of glass-supported gold nanoparticles (AuNPs) with
controllable particle size and inter-particle spacing, by combining the self-assembly of block copolymer micelle-loaded
metal precursors with a seeding growth method. Absorbance spectra as an optical response of the AuNP arrays were
measured to obtain their LSPR peak position (λLSPR). There was a red shift in λLSPR. with increasing cover medium
refractive index for all fabricated and simulated arrays. A comparison between computed and measured λLSPR. for a 33
nm AuNP array suggests that large nanoparticles produced by this fabrication method have ellipsoidal shapes rather than
spherical ones, as in the case of small AuNP arrays.
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