Femtosecond laser processing of glassy and polymeric matrices containing metals and semiconductor nanostructures

Optical Materials Volume: 35 Issue: 12 Pages: 2643-2648 Published: 2013

TEM images obtained from the Cu:BSi sample irradiated with amplified laser system after the heat treatment. The electron diffraction pattern is shown in the inset, revealing the formation of Cu nanoparticles.

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Writers: J.M.P. Almeida; V. Tribuzi; R.D. Fonseca; A.J.G. Otuka; P.H.D. Ferreira; V.R. Mastelaro; P. Brajato; A.C. Hernandes; A. Dev; T. Voss; D.S. Correa; C.R. Mendonca

Keywords: Femtosecond laser; Material processing; Two-photon polymerization; Metallic nanoparticles; Hybrid nanomaterials

Abstract: Tailoring properties of materials by femtosecond laser processing has been proposed in the last decade as a powerful approach for technological applications, ranging from optics to biology. Although most of the research output in this field is related to femtosecond laser processing of single either organic or inorganic materials, more recently a similar approach has been proposed to develop advanced hybrid nanomaterials. Here, we report results on the use of femtosecond lasers to process hybrid nanomaterials, composed of polymeric and glassy matrices containing metal or semiconductor nanostructures. We present results on the use of femtosecond pulses to induce Cu and Ag nanoparticles in the bulk of borate and borosilicate glasses, which can be applied for a new generation of waveguides. We also report on 3D polymeric structures, fabricated by two-photon polymerization, containing Au and ZnO nanostructures, with intense two-photon fluorescent properties. The approach based on femtosecond laser processing to fabricate hybrid materials containing metal or semiconductor nanostructures is promising to be exploited for optical sensors and photonics devices.

Robson Lima
Sobre Robson Lima 87 Artigos
Atua no Centro de Desenvolvimento de Materiais Funcionais.