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Phototactic Mass Transport in Polymer Films for Micropatterning and Alignment of Functional Materials
Author(s) -
Ubukata T.,
Hara M.,
Ichimura K.,
Seki T.
Publication year - 2004
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/adma.200305535
Subject(s) - micropatterning , azobenzene , photomask , materials science , polymer , mass transport , grating , molecule , nanotechnology , optoelectronics , composite material , engineering physics , organic chemistry , chemistry , engineering , layer (electronics) , resist
A new micropatterning technique based on photoinduced mass transport in a polymer film is presented. The Figure shows a rod‐like dye crystallized aligned along a surface relief grating (SRG) on an azobenzene polymer film produced by photoirradiation through a photomask. The uniaxial alignment is achieved by one‐dimensional diffusion—restricted by the grating geometry—of the dye molecule.