Two-photon patterning of a polymer containing Y-shaped azochromophores (Articolo in rivista)

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Label
  • Two-photon patterning of a polymer containing Y-shaped azochromophores (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Alternative label
  • A. Ambrosio, E. Orabona, P. Maddalena, A. Camposeo, M. Polo, A. A. R. Neves, D. Pisignano, A. Carella, F. Borbone, A. Roviello (2009)
    Two-photon patterning of a polymer containing Y-shaped azochromophores
    in Applied physics letters (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Ambrosio, E. Orabona, P. Maddalena, A. Camposeo, M. Polo, A. A. R. Neves, D. Pisignano, A. Carella, F. Borbone, A. Roviello (literal)
Rivista
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  • Dipartimento di Scienze Fisiche and CNR-INFM CRS-COHERENTIA, Università degli Studi Federico II; CNR-INFM National Nanotechnology Laboratory, Distretto Tecnologico ISUFI, Università del Salento; Dipartimento di Chimica, Università degli Studi Federico II (literal)
Titolo
  • Two-photon patterning of a polymer containing Y-shaped azochromophores (literal)
Abstract
  • We report on the patterning of the free surface of azo-based polymer films by means of mass migration driven by one- or two-photon absorption. A symmetric donor-acceptor-donor structured Y-shaped azochromophore is specifically synthesized to enhance two-photon absorption in the polymer. The exposure of the polymer film to a focused laser beam results in light-driven mass migration for both one- and two-photon absorptions. Features with subdiffraction resolution ?250 nm? are realized and the patterning dynamics is investigated as a function of the light dose. Furthermore, functional photonic structures, such as diffraction gratings with periods ranging between 0.5 and 2.0 ?m, have been realized. (literal)
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