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Lamellar Orientation and Crystallization Dynamics of Poly (L-Lactic Acid) Thin Films Investigated by In-Situ Reflection Absorption Infrared Spectroscopy

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  • Abstract:As a kind of new optical limiting materials, gold nanoparticles have optical limiting property owing to their optical nonlinearities induced by surface plasmon resonance (SPR). Gold nanorods (GNRs) possess transversal SPR absorption and tunable longitudinal SPR absorption in the visible and near-infrared region, so they can be used as potential optical limiting materials against tunable laser pulses. In this letter, GNRs were prepared using seed-mediated growth method and surface-modified by silica coating to obtain good dispersion in polydimethylsiloxane prepolymers. Then the silicone rubber films doped with GNRs were prepared after vulcanization, whose optical limiting property and optical nonlinearity were investigated. The silicone rubber samples doped with more GNRs were found to exhibit better optical limiting performance. © 2015, Springer-Verlag Berlin Heidelberg.

  • Volume:121

  • Issue:1

  • Translation or Not:no

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