Electrical response from nanocomposite PDMS-Ag NPs generated by in situ laser ablation in solution (Articolo in rivista)

Type
Label
  • Electrical response from nanocomposite PDMS-Ag NPs generated by in situ laser ablation in solution (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0957-4484/24/3/035707 (literal)
Alternative label
  • Maria Kalyva, Susmit Kumar, Rosaria Brescia, Simona Petroni, Carola La Tegola, Giovanni Bertoni, Massimo De Vittorio, Roberto Cingolani, Athanassia Athanassiou (2013)
    Electrical response from nanocomposite PDMS-Ag NPs generated by in situ laser ablation in solution
    in Nanotechnology (Bristol. Print); IOP Publishing Ltd. (Institute of Physics Publishing Ltd), "Bristol ; London" (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Maria Kalyva, Susmit Kumar, Rosaria Brescia, Simona Petroni, Carola La Tegola, Giovanni Bertoni, Massimo De Vittorio, Roberto Cingolani, Athanassia Athanassiou (literal)
Pagina inizio
  • 035707-1 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0957-4484/24/3/035707 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 24 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 9 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 3 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Center of Biomolecular Nanotechnologies @UniLe, Istituto Italiano di Tecnologia (IIT), Via Barsanti, I-73010 Arnesano, Lecce, Italy; National Nanotechnology Laboratory, CNR-Istituto di Nanoscienze, Via Arnesano, 16, I-73100, Lecce, Italy; Nanochemistry, Istituto Italiano di Tecnologia (IIT), Via Morego 30, I-16163 Genova, Italy; IMEM-CNR, Parco Area delle Scienze 37/A, I-43124 Parma, Italy; Istituto Italiano di Tecnologia (IIT), Via Morego 30, I-16163 Genova, Italy; Nanophysics, Istituto Italiano di Tecnologia (IIT), Via Morego 30, I-16163 Genova, Italy (literal)
Titolo
  • Electrical response from nanocomposite PDMS-Ag NPs generated by in situ laser ablation in solution (literal)
Abstract
  • Laser ablation technique is employed in order to generate polydimethylsiloxane (PDMS)/Ag NPs in situ, starting from a silver target in a solution of PDMS prepolymer and toluene. The produced surfactant-free nanoparticles are characterized by high resolution transmission electron microscopy (HRTEM) and scanning TEM-high angle annular dark field (STEM-HAADF) imaging modes, showing the majority of them to be of the order of 4 nm in diameter with a small percentage of larger Ag-AgCl multidomain NPs, embedded into a PDMS matrix. Low concentrations of carbon onion-like nanoparticles or larger fibers are also formed in the toluene-PDMS prepolymer solution. In accordance with this, UV-vis spectra shows no peak from silver NPs; their small size and their coverage by the PDMS matrix suppresses the signal of surface plasmon absorption. Inductively coupled plasma measurements reveal that the concentration of silver in the polymer is characteristically low, 0.001% by weight. The electrical properties of the PDMS nanocomposite films are modified, with current versus voltage (I-V) measurements showing a low current of up to a few tenths of a pA at 5 V. The surface resistivity of the films is found to be up to ?~10^10 ?/sq. Under pressure (e.g. stress) applied by a dynamic mechanical analyzer (DMA), the I-V measurements demonstrate the current decreasing during the elastic deformation, and increasing during the plastic deformation. (literal)
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