Journal
EUROPEAN PHYSICAL JOURNAL E
Volume 30, Issue 4, Pages 371-377Publisher
SPRINGER
DOI: 10.1140/epje/i2009-10535-2
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Funding
- Deutsche Forschungsgemeinschaft
- Deutscher Akademischer Austauschdienst [312/pro-ms]
- ENB
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We investigate the response of prestretched nematic side-chain liquid single-crystal elastomers to superimposed external shear, electric, and magnetic fields of small amplitude. The prestretching direction is oriented perpendicular to the initial nematic director orientation, which enforces director reorientation. Furthermore, the shear plane contains the direction of prestretch. In this case, we obtain a strongly decreased effective shear modulus in the vicinity of the onset and the completion of the enforced director rotation. For the same regions, we find that it becomes comparatively easy to reorient the director by external electric and magnetic fields. These results were derived using conventional elasticity theory and its coupling to relative director-network rotations.
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