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Spontaneous Patterning of Hexagonal Structures in an Azo‐Polymer Using Light‐Controlled Mass Transport
Author(s) -
Hubert C.,
FioriniDebuisschert C.,
Maurin I.,
Nunzi J.M.,
Raimond P.
Publication year - 2002
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(20020517)14:10<729::aid-adma729>3.0.co;2-1
Subject(s) - materials science , elongation , hexagonal crystal system , irradiation , polarization (electrochemistry) , polymer , laser , optics , optoelectronics , photochemistry , crystallography , composite material , chemistry , physics , nuclear physics , ultimate tensile strength
Spontaneous formation of hexagonal surface relief patterns (see Figure) occurs upon uniform, coherent laser irradiation of a poly‐(methylmethacrylate) with 35 % of the methyl ester groups replaced by an azo dye. The structures grow at a rate linearly dependent on the light intensity, above a threshold value. Using linearly polarized light, the elongation axis of the structures orients along the polarization direction.