材料科学
中胚层
液晶
电场
韧性
复合材料
极限抗拉强度
模数
聚合物
延展性(地球科学)
调制(音乐)
光电子学
液晶
声学
蠕动
物理
量子力学
作者
Ra You,Su-Min Kang,Changjae Lee,Jisoo Jeon,Jeong Jae Wie,Taek‐Soo Kim,Dong Ki Yoon
标识
DOI:10.1021/acsami.1c04999
摘要
The arrangement of mesogenic units 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 three representative patterned LCN films were investigated in terms of the arrangement of mesogenic units through tensile testing. Remarkably, it was determined that LCN films showed enhanced toughness and ductility as defects increased 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.
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