Freestanding 2D arrays of silver nanorods
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- Freestanding 2D arrays of silver nanorods
- Gunawidjaja, Ray; Jiang, Chaoyang; Ko, Hyunhyub; Tsukruk, Vladimir V.
- FREELY SUSPENDED NANOMEMBRANES; ENHANCED RAMAN-SPECTROSCOPY; SCANNING PROBE MICROSCOPY; SELF-ASSEMBLED MONOLAYERS; NANOPARTICLE ARRAYS; THIN-FILMS; NANOWIRES; SOFT; MULTILAYERS; PERCOLATION
- Issue Date
- WILEY-V C H VERLAG GMBH
- ADVANCED MATERIALS, v.18, no.21, pp.2895 - 2899
- The fabrication of a robust 2D array of randomly oriented silver nanorods (Ag-NR) as a free-standing film by encapsulating these nanorods into polymeric layer-by-layer (LbL) nanomembranes was examined. These silver nanoparticles can be exploited as nanoscale building blocks with unique properties such as geometry-dependent optical properties or surface-enhanced Raman scattering. The silver nanorods making up the central layer are sandwiched between two LbL films, thus forming nanocomposite films with the general formula (PAH/PSS) 10-PAHAg(PAH/PSS)10PAH. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) images of cast and spin-coated silver-containing films show adsorbed silver nanorods uniformly distributed on a surface of silicon and LbL film without significant aggregation for high surface coverage.
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