Physics – Condensed Matter – Materials Science
Scientific paper
2002-08-12
Physics
Condensed Matter
Materials Science
Latex (EPJE class) 12 figures
Scientific paper
10.1140/epje/i2002-10095-y
The macroscopic shape of liquid crystalline elastomers strongly depends on the order parameter of the mesogenic groups. This order can be manipulated if photoisomerisable groups, e.g. containing N=N bonds, are introduced into the material. We have explored the large photo-mechanical response of such an azobenzene-containing nematic elastomer at different temperatures, using force and optical birefringence measurements, and focusing on fundamental aspects of population dynamics and the related speed and repeatability of the response. The characteristic time of ``on'' and ``off'' regimes strongly depends on temperature, but is generally found to be very long. We were able to verify that the macroscopic relaxation of the elastomer is determined by the nematic order dynamics and not, for instance, by the polymer network relaxation.
Cviklinski Jean
Tajbakhsh A. R.
Terentjev Eugene M.
No associations
LandOfFree
UV-isomerisation in nematic elastomers as a route to photo-mechanical transducer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with UV-isomerisation in nematic elastomers as a route to photo-mechanical transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and UV-isomerisation in nematic elastomers as a route to photo-mechanical transducer will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-268781