<html>
<font size=4 color="#0000FF"><b>Prof. Dr. Heino Finkelmann<br>
</b></font><font color="#0000FF">Institut für Makromolekulare
Chemie,<br>
Albert-Ludwigs-Universität Freiburg, Germany<br><br>
</font><font size=4 color="#0000FF"><b><i>LIQUID CRYSTAL ELASTOMERS<br>
</i></b></font><font color="#0000FF">Rubber elasticity is a unique
feature of polymer networks or elastomers formed from long polymer chains
connected to one another by crosslinkages. An implanting of rod-like
mesogenic monomer units into the network chains can induce the liquid
crystalline state of the elastomers. The interplay between network chain
conformation and liquid crystalline phase creates material with
remarkable properties. <br><br>
Detailed investigations proved a direct coupling between chain
conformation and anisotropic state of order of the liquid crystalline
phase. Introducing an anisotropic chain conformation a priori by a
suitable synthesis concept, networks can be obtained that are macroscopic
uniformly ordered (liquid single crystal elastomers, LSCE). <br><br>
Depending on the liquid crystalline phase structure, LSCE exhibit
exceptional properties, e.g. nematic LSCE change their macroscopic
dimensions when the state of order is modified by external stimuli. This
effect can be applied to novel thermo- and opto-mechanical
actuators.<br><br>
<b>VLJUDNO VABLJENI!<br><br>
<br>
</font><i>t<font color="#800000">orek, 20. junij 2006, ob 15.30<br><br>
Predavalnica Mednarodne podiplomske sole<br><br>
Jozefa Stefana, soba N 250,<br><br>
Jamova 39, Ljubljana<br><br>
<br>
</i></b></font><x-sigsep><p></x-sigsep>
Tamara Matevc<br>
tajnica Odseka za kompleksne snovi<br>
Institut Jozef Stefan<br>
Jamova 39<br>
SI - 1000 Ljubljana<br>
tel.: +386 1 477 3220<br>
fax: +386 1 477 3998<br>
e-mail: tamara.matevc@ijs.si</html>