Two-photon patterning of a polymer containing Y-shaped azochromophores

被引：26

作者：

Ambrosio, A. ^{[1
,2
]}

Orabona, E. ^{[1
,2
]}

Maddalena, P. ^{[1
,2
]}

Camposeo, A. ^{[3
]}

Polo, M. ^{[3
]}

Neves, A. A. R. ^{[3
]}

Pisignano, D. ^{[3
]}

Carella, A. ^{[4
]}

Borbone, F. ^{[4
]}

Roviello, A. ^{[4
]}

机构：

[1] Univ Naples Federico 2, Dipartimento Sci Fis, I-80126 Naples, Italy

[2] Univ Naples Federico 2, CNR INFM CRS COHERENTIA, I-80126 Naples, Italy

[3] Univ Salento, CNR INFM Natl Nanotechnol Lab, Distretto Tecnol ISUFI, I-73100 Lecce, Italy

[4] Univ Naples Federico 2, Dipartimento Chim, I-80126 Naples, Italy

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 01期

关键词：

diffraction gratings; laser beam effects; laser materials processing; nanopatterning; optical fabrication; optical films; optical polymers; polymer films; two-photon processes; SURFACE-RELIEF FORMATION; FILMS; AZOBENZENE; GRATINGS;

D O I：

10.1063/1.3058820

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 mu m, have been realized.

引用

页数：3

共 20 条

[1] Design of organic molecules with large two-photon absorption cross sections [J].