NEMATIC ELASTOMERS AND MAGNETIC GELS
We characterize the broken symmetries and the hydrodynamic variables for liquid crystalline elastomers and for magnetic gels. Both, static and dynamic macroscopic aspects are analyzed, in particular the elastic and rheological aspects. We discuss the width of the hydrodynamic regime as well as the cross-over to single molecule effects. Both systems share relative rotations as macroscopic variables and we investigate, in particular for liquid crystalline elastomers, their influence on the linearized as well as on the nonlinear elastic behavior. In view of the potential application as soft actuators we analyze shape changes in external mechanical and external magnetic/electric fields. We close by a critical comparison of the advantages and disadvantages of the class of materials considered here.
Harald Pleiner Stefan Bohlius Philippe Martinoty Andreas Menzel Helmut R.Brand
Max Planck Institute for Polymer Research,Mainz,Germany Institut Charles Sadron,UPR 22 CNRS-ULP,Strasbourg,France Theoretical Physics,University Bayreuth,Bayreuth,Germany
国际会议
International Symposium on Polymer Physics(2008年国际高分子物理学术会议PP2008)
厦门
英文
196-197
2008-06-08（万方平台首次上网日期，不代表论文的发表时间）