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Photo-crosslinked side-chain liquid-crystalline elastomers for microsystems

  • Sánchez-Ferrer, Antoni University of Fribourg, Physics Department, Polymer Physics Group, Switzerland - Albert-Ludwigs-Universität, Institut für Makromolekulare Chemie, Freiburg, Germany
  • Fischl, Tamás Technische Universität Ilmenau, Institut für Mikro- und Nanotechnologien, FG Mikromechanische Systeme, Germany
  • Stubenrauch, Mike Technische Universität Ilmenau, Institut für Mikro- und Nanotechnologien, FG Mikromechanische Systeme, Germany
  • Wurmus, Helmut Technische Universität Ilmenau, Institut für Mikro- und Nanotechnologien, FG Mikromechanische Systeme, Germany
  • Hoffmann, Martin Technische Universität Ilmenau, Institut für Mikro- und Nanotechnologien, FG Mikromechanische Systeme, Germany
  • Finkelmann, Heino Albert-Ludwigs-Universität, Institut für Makromolekulare Chemie, Freiburg, Germany
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    22.09.2009
Published in:
  • Macromolecular Chemistry and Physics. - 2009, vol. 210, no. 20, p. 1671-1677
actuator
elastomers
films
liquid crystal
microsystems
photo-crosslinking
English Photo-crosslinkable side-chain liquid-crystalline polymers (LCPs) containing photoreactive benzophenone cores are synthesized in order to obtain their corresponding side-chain liquid-crystalline elastomers (LCEs). This strategic synthesis allows thin elastomeric films and their integration into microsystems for actuators and micromachines to be obtained. As an example of this principle, a gripper was developed. The position of its arms can be changed by applying voltages from 1.5 to 3.5 V at different rates. Small changes in the liquid-crystalline elastomer film cause strains of up to 150% in the microdevice and the capacity to move up to 400 times its own mass due to the nematic-to-isotropic transformation.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/301249
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