Abstract
We have investigated the photoresponsive behavior of homogeneously aligned low-azobenzene-concentration crosslinked liquid-crystalline polymers. We compared the thermal contraction and photocontraction of the films, and show that upon UV irradiation, they bend efficiently towards the actinic light source. The photoinduced bending is studied both under continuous-wave irradiation and irradiation with nanosecond pulses. Pulsed irradiation revealed that the photomechanical response can take place within sub-millisecond time scale, and that even a single laser pulse can cause the sample to bend.
| Original language | English |
|---|---|
| Pages (from-to) | 405-413 |
| Number of pages | 9 |
| Journal | Journal of Nonlinear Optical Physics and Materials |
| Volume | 20 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Sept 2011 |
| Publication type | A1 Journal article-refereed |
Keywords
- Azobenzene
- Liquid crystal
- Photocontraction
- Photomobile materials
- Pulsed irradiation
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy (miscellaneous)
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