Ambrosio, Antonio and Maddalena, Pasqualino and Carella, Antonio and Borbone, Fabio and Roviello, Antonio (2009) Two-photon patterning of a polymer containing Y-shaped azochromophores. [Pubblicazione in rivista scientifica]

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Tipologia del documento: Pubblicazione in rivista scientifica
Lingua: English
Titolo: Two-photon patterning of a polymer containing Y-shaped azochromophores
Ambrosio, Antonio[non definito]
Maddalena, Pasqualino[non definito]
Carella, Antonio[non definito]
Borbone, Fabio[non definito]
Roviello, Antonio[non definito]
Autore/i: Ambrosio A., Orabona E., Maddalena P., Camposeo A., Polo M., Neves A. A. R., Pisignano D., Carella A., Borbone F., Roviello A.
Data: 2009
Numero di pagine: 3
Dipartimento: Scienze fisiche
Titolo del periodico: APPLIED PHYSICS LETTERS
Data: 2009
Volume: 94
Intervallo di pagine: 11115/1-11115/3
Numero di pagine: 3
Parole chiave: photonic, azo-polymers, two photon absorption, SRG
Depositato il: 21 Ott 2010 06:56
Ultima modifica: 30 Apr 2014 19:43


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 μm, have been realized.

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