Making waves in a photoactive polymer film
Supplementary videos from the paper "Making waves in a photoactive polymer film," authored by Anne Helene Gelebart, Dirk Jan Mulder, Michael Varga, Andrew Konya, Ghislaine Vantomme, E. W. Meijer, Robin L. B. Selinger & Dirk J. Broer, published in Nature 546, 632–636 (29 June 2017) doi: 10.1038/nature22987
http://dx.doi.org/10.1038/nature22987
Video 1: Reference experiments. Comparison between a splay aligned sample (left) and two uniaxially aligned samples (planar and homeotropic). Videos are played in real time.
Video 2: Type of deformation obtained when the LCN films is exposed to UV light without any constraint (worm like displacement) and when one constraint point is used (oscillation and tube). Type of deformation obtained when the LCN films is exposed to UV light without any constraint (worm like displacement) and when one constraint point is used (oscillation and tube). Videos are played in real time.
Video 3: Reference experiments. Comparison between the different molecules investigated. Videos are played in real time.
Video 4: Wave-like propagation with the planar side placed upwards. The incident light comes from the left and the wave propagates toward the opposite direction. Model and experiment are placed side to side to show good agreement. In the second part of the video the thermal effects are shown. Videos are played in real time.
Video 5: Wave like propagation with the homeotropic side placed upwards. The incident light comes from the left and the wave propagates toward the light. Model and experiment are placed side to side to show good agreement. In the second part of the video the thermal effects are shown. Videos are played in real time.
Video 6: Examples of use for the wave propagation. The first part of the video shows that the LCN film carry uphill object much heavier and much bigger than its own dimension. The second part of the video shows the use of the wave for self-cleaning surfaces with the ejection of sand placed at the surface. Videos are played in real time.
Video 7: Light fuelled vehicle. Planar side up. The light comes from the left side and the polymeric film is constrained in a non-responsive frame. Videos are played in real time.
Video 8: Light fuelled vehicle, homeotropic side up. The light comes from the left side and the polymeric film is constrained in a non-responsive frame. Videos are played in real time.