Journal
CHEMNANOMAT
Volume 3, Issue 3, Pages 160-163Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cnma.201600315
Keywords
gold; plasmonic clusters; platonic solids; seed-mediated growth; silica
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Funding
- National Science Foundation under NSF [1541959]
- LabEx AMADEus [ANR-10-LABX-42]
- IdEx Bordeaux [ANR-10-IDEX-03-02]
- National Science Foundation [DMR-1435964, DMR-1420570]
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Isotropic plasmonic clusters consisting of a controlled number of gold satellites around a silica core are fabricated from silica/polystyrene tetrapod, hexapod, and dodecapod templates. The synthetic pathway includes stages of site-specific seed adsorption, seed-mediated growth, and iterative etching/regrowth to reshape the satellites into spheroids. Transmission electron microscopy and electron tomography provide evidence of the symmetry of the clusters. This work paves the way for a comprehensive study of their optical properties.
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