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Title: Stretchable nanocomposite electrodes with tunable mechanical properties by supersonic cluster beam implantation in elastomers

We demonstrate the fabrication of gold-polydimethylsiloxane nanocomposite electrodes, by supersonic cluster beam implantation, with tunable Young's modulus depending solely on the amount of metal clusters implanted in the elastomeric matrix. We show both experimentally and by atomistic simulations that the mechanical properties of the nanocomposite can be maintained close to that of the bare elastomer for significant metal volume concentrations. Moreover, the elastic properties of the nanocomposite, as experimentally characterized by nanoindentation and modeled with molecular dynamics simulations, are also well described by the Guth-Gold classical model for nanoparticle-filled rubbers, which depends on the presence, concentration, and aspect ratio of metal nanoparticles, and not on the physical and chemical modification of the polymeric matrix due to the embedding process. The elastic properties of the nanocomposite can therefore be determined and engineered a priori, by controlling only the nanoparticle concentration.
Authors:
; ;  [1] ; ;  [2] ; ;  [3]
  1. CIMAINA and Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, 20133 Milano (Italy)
  2. Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato (Italy)
  3. WISE srl, Piazza Duse 2, 20122 Milano (Italy)
Publication Date:
OSTI Identifier:
22398768
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ASPECT RATIO; CLUSTER BEAMS; CONCENTRATION RATIO; ELASTICITY; ELASTOMERS; ELECTRODES; FABRICATION; GOLD; MATRIX MATERIALS; MODIFICATIONS; MOLECULAR DYNAMICS METHOD; NANOCOMPOSITES; NANOPARTICLES; RUBBERS; YOUNG MODULUS