| 초록 |
The arrangement of mesogenic unit determines mechanical response of the liquid crystal polymer network (LCN) film to heat. Here, we show an interesting approach to programming three-dimensional patterns of the LCN films with periodic topological defects generated by applying an electric field. The mechanical properties of patterned LCN films are investigated in terms of the arrangement of mesogenic units through tensile testing. Remarkably, it was determined that LCN films showed the enhanced toughness and ductility as defects increases in a given area, which is related to the elastic modulus mismatch that mitigates crack propagation. Our platform can also be used to modulate the frictional force of the patterned LCN films by varying the temperature, which can provide insight into the multiplex mechanical properties of LCN films. |
