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]
Full text not available from this repository.Item Type: | Pubblicazione in rivista scientifica | ||||||||||||
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Lingua: | English | ||||||||||||
Title: | Two-photon patterning of a polymer containing Y-shaped azochromophores | ||||||||||||
Creators: |
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Autore/i: | Ambrosio A., Orabona E., Maddalena P., Camposeo A., Polo M., Neves A. A. R., Pisignano D., Carella A., Borbone F., Roviello A. | ||||||||||||
Date: | 2009 | ||||||||||||
Number of Pages: | 3 | ||||||||||||
Department: | Scienze fisiche | ||||||||||||
Journal or Publication Title: | APPLIED PHYSICS LETTERS | ||||||||||||
Date: | 2009 | ||||||||||||
Volume: | 94 | ||||||||||||
Page Range: | 11115/1-11115/3 | ||||||||||||
Number of Pages: | 3 | ||||||||||||
Uncontrolled Keywords: | photonic, azo-polymers, two photon absorption, SRG | ||||||||||||
Date Deposited: | 21 Oct 2010 06:56 | ||||||||||||
Last Modified: | 30 Apr 2014 19:43 | ||||||||||||
URI: | http://www.fedoa.unina.it/id/eprint/7447 |
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 μm, have been realized.
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