Block-copolymer-based plasmonic nanostructures.
We report on the fabrication and optical characterization of dense and ordered arrays of metal nanoparticles. The metal arrays are produced by reducing metal salts in block copolymer (BCP) templates made by solvent annealing of poly(styrene-b-4-vinylpyridine) (PS-b-P4VP) or poly(styrene-b-ethylene oxide) (PS-b-PEO) diblock copolymer thin films in mixed solvents. The gold and gold/silver composite nanoparticle arrays show characteristic surface plasmon resonances in the visible wavelength range. The patterning can be applied over large areas onto various substrates. We demonstrate that these metal nanoparticle arrays on metal thin films interact with surface plasmon polaritons (SPPs) that propagate at the film/nanoparticle interface and, therefore, modify the dispersion relation of the SPPs.
Mistark
Peter A
PA
Physics Department, University of Massachusetts, Amherst, MA 01003, USA.
Park
Soojin
S
Yalcin
Sibel Ebru
SE
Lee
Dong Hyun
DH
Yavuzcetin
Ozgur
O
Tuominen
Mark T
MT
Russell
Thomas P
TP
Achermann
Marc
M
D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D011092:Polyethylene Glycols; D011137:Polystyrenes / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D012408:Rubber; D013440:Sulfides; D020349:Surface Plasmon Resonance / Q000379:methods*; D013499:Surface Properties
D046911:Macromolecular Substances; D011137:Polystyrenes; D011145:Polyvinyls; D013440:Sulfides; C521882:poly(styrene)-block-poly(4-vinylpyrindine) diblock copolymer; C541965:polystyrene-b-poly(ethylene oxide); D011092:Polyethylene Glycols; C016143:polysulfide rubber; D012408:Rubber