420
K. Uchida et al.
Fig. 24.12 a Packing of
molecules of 6o in the single
crystal. (scale bar for c:
3.33 µm)
a polystyrene bead (PB) with 1 mm diameter was placed. Then, the UV light was
irradiated. Initially, (a) UV-light was irradiated from the bottom of the screen, the
PB moved to top side and then (b) visible light was irradiated orthogonal to the
surface followed by UV-light irradiation from the top of the screen. The PB moved
to the bottom direction as shown in Fig. 24.13. These results indicate the cooperative
bending of the DAE crystals works well to transport a PB. This smart surface will be
applicable for remote-controlled object transportation in various environments and
holds potential for the development of soft robots.
Fig. 24.13 Photographs showing the transportation of the PB upon UV and visible-light irradiation.
a After UV-light irradiation from the bottom of the screen, b after visible-light irradiation orthogonal
to the surface followed by UV-light irradiation from the top of the screen. Scale bars: 1 mm