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On the Physical Parameters and Relaxation Processes in Nematic Azobenzene Polymers for Optical Nanowriting
Author(s) -
Andreozzi Laura,
Faetti Massimo,
Galli Giancarlo,
Giordano Marco,
Palazzuoli Diego
Publication year - 2004
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200451433
Subject(s) - azobenzene , liquid crystal , polymer , materials science , isomerization , relaxation (psychology) , optical storage , chemical physics , homogeneity (statistics) , liquid crystalline , optoelectronics , polymer chemistry , optics , chemistry , organic chemistry , composite material , physics , computer science , psychology , social psychology , machine learning , catalysis
The possibility of achieving devices for rewritable optical storage is provided by liquid‐crystalline polymers with azobenzene side groups, because they undergo photochemically induced trans‐cis reversible isomerization. In this work we overview our investigations into a nematic azobenzene‐polymethacrylate (PMA4) as a suitable material for optical nanowriting. Relaxation processes over different time‐length scales are discussed with particular reference to understanding the interplay between homogeneity at the molecular level, bit stability and working temperature range.