Open AccessTwo-photon induced polymer nanomovement
Author(s) -
Hidekazu Ishitobi,
Satoru Shoji,
T. Hiramatsu,
HongBo Sun,
Zouheir Sekkat,
Satoshi Kawata
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.014106
Subject(s) - optics , materials science , polarization (electrochemistry) , polymer , wavelength , irradiation , photon , laser , light intensity , ray , optoelectronics , physics , chemistry , composite material , nuclear physics
We present the first report of two-photon induced plastic surface deformation in solid polymer films. Exposure of azo polymer films, which absorb in the visible range (lambda(max) = 480 nm), to intense 920 nm irradiation leads to polarization dependent photofluidic polymer nanomovement caused by photoselective two-photon trans <-->cis isomerization. The deformations were induced by a gradient of light intensity; and strongly depend on the wavelength and the polarization direction of the incident laser light and the position of the focused spot with respect to the plane of the polymer film.