We present the results of time and temperature dependent deformation of two azobenzene materials with different dipole moment during the process of surface relief grating formation. The effect of chromophore orientation on grating formation in these films was studied in situ using continuous and pulselike exposure techniques at various temperatures up to the glass transition temperature of the respective polymer material. The results obtained for high dipole moment pDR1M and low dipole moment pMEA were compared in terms of the rate of the grating formation and related to the quantities as relaxation of the chromophores in the absence of the inscribing light and induced stress due to the chromophore orientation. The parameters obtained from the simulation data can be well explained considering viscoelastic material model. The experimental findings can be explained by assuming the interaction of azochromophores with polarized light leading to the orientation anisotropy of the azobenzene macromolecules, thereby generating a mechanical stress.
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1 July 2009
Research Article|
July 10 2009
Time and temperature dependence of surface relief grating formation in polymers containing azobenzene groups with different dipole moment
Padmanabh U. Veer;
Padmanabh U. Veer
a)
1Department of Solid State Physics,
University of Siegen
, ENC, 57068 Siegen, Germany
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Ullrich Pietsch;
Ullrich Pietsch
1Department of Solid State Physics,
University of Siegen
, ENC, 57068 Siegen, Germany
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Marina Saphiannikova
Marina Saphiannikova
b)
2
Leibniz Institute of Polymer Research
, 01069 Dresden, Germany
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Padmanabh U. Veer
1,a)
Ullrich Pietsch
1
Marina Saphiannikova
2,b)
1Department of Solid State Physics,
University of Siegen
, ENC, 57068 Siegen, Germany
2
Leibniz Institute of Polymer Research
, 01069 Dresden, Germany
a)
Electronic mail: [email protected]. Tel.: +49 271-740-3796. FAX: +49 271-740-3763.
b)
Electronic mail: [email protected]. Tel.: +49 351-4658-597. FAX: +49 351-4658-362.
J. Appl. Phys. 106, 014909 (2009)
Article history
Received:
April 02 2009
Accepted:
June 04 2009
Citation
Padmanabh U. Veer, Ullrich Pietsch, Marina Saphiannikova; Time and temperature dependence of surface relief grating formation in polymers containing azobenzene groups with different dipole moment. J. Appl. Phys. 1 July 2009; 106 (1): 014909. https://doi.org/10.1063/1.3159652
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