Fabrication and Optical effects in artificial opals infiltrated with gold nanoparticles (Abstract/Poster in convegno)

Type
Label
  • Fabrication and Optical effects in artificial opals infiltrated with gold nanoparticles (Abstract/Poster in convegno) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Alternative label
  • A. Chiappini1, C. Armellini1, S. N. Bhaktha2, I. Cacciari3, A. Chiasera1, M Ferrari1, E. Giorgetti4, E. Moser5, G. Speranza6, I. Timtcheva7, G.C. Righini3 (2009)
    Fabrication and Optical effects in artificial opals infiltrated with gold nanoparticles
    in Summer School on Plasmonics COST Action MP0702, Porquerolles Island, Côte d'Azur, France, 13-17 September 2009
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Chiappini1, C. Armellini1, S. N. Bhaktha2, I. Cacciari3, A. Chiasera1, M Ferrari1, E. Giorgetti4, E. Moser5, G. Speranza6, I. Timtcheva7, G.C. Righini3 (literal)
Note
  • Poster (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • *1**CNR-IFN, CSMFO Lab., Via alla Cascata, 56/C, Povo, 38123Trento, Italy.* *2**Laboratoire de Physique de la Matie`re Condense´e, CNRS UMR 6622, Universite´ de Nice Sophia-Antipolis, 06108 Nice, France* *3**MDF Lab., IFAC - CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino-Firenze, Italy.* *4**ISC - CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino -Firenze, Italy.* *5**Dip. Fisica, Univ. di Trento & CSMFO Lab., via Sommarive 14, Povo, 38123 Trento, Italy* *6**FBK-IRST via Sommarive 18, 38123 Povo-Trento, Italy* *7**Organic Chemistry Inst. & Photochemistry Centre, Bulgarian Acad. of Science, Sofia, Bulgaria* (literal)
Titolo
  • Fabrication and Optical effects in artificial opals infiltrated with gold nanoparticles (literal)
Abstract
  • Three dimensional photonic crystals, in opal configuration, are attractive for their easy processability and capability of selfassemble in an ordered face centered cubic structure [1]. Moreover, they serve as template for inverse opals which, in fact for suitable dielectric contrasts, show a full band gap. Furthermore, infiltration with photoactive materials dramatically alters the optical properties of opals and allows interesting applications in fields such as photonics and optoelectronics. Among highly polarizable infiltrating materials, we focused our attention on gold nanoparticles, which are known to have a high and fast non linear optical (NLO) response. Moreover, their surface plasmon resonance energy depends on particle size and shape, as well as on the surrounding environment. The aim of this work was to develop a growing technique for NpAu infiltrated polystyrene (PS) opals and to study their optical properties. Direct infiltration of PS opals with NpAu water solutions is very difficult due to the low wettability of PS with water. Exploiting the self-assembling properties of colloidal photonic crystals it is possible to grow infiltrated opals directly form mixed suspensions of PS and NpAu. The optical quality of NpAu infiltrated opal films grown with our method allows to perform a detailed spectroscopic characterization (literal)
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