Dynamic self-stiffening in liquid crystal elastomers.
Dynamic self-stiffening in liquid crystal elastomers.
复制标题
液晶弹性体中的动态自动化。
DOI:
10.1038/ncomms2772
复制
发表时间:
2013
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Biological tissues have the remarkable ability to remodel and repair in response to disease, injury, and mechanical stresses. Synthetic materials lack the complexity of biological tissues, and man-made materials which respond to external stresses through a permanent increase in stiffness are uncommon. Here, we report that polydomain nematic liquid crystal elastomers increase in stiffness by up to 90% when subjected to a low-amplitude (5%), repetitive (dynamic) compression. Elastomer stiffening is influenced by liquid crystal content, the presence of a nematic liquid crystal phase and the use of a dynamic as opposed to static deformation. Through rheological and X-ray diffraction measurements, stiffening can be attributed to a nematic director which rotates in response to dynamic compression. Stiffening under dynamic compression has not been previously observed in liquid crystal elastomers and may be useful for the development of self-healing materials or for the development of biocompatible, adaptive materials for tissue replacement.
登录
查看更多内容
DOI:
10.1115/1.2891384
发表时间:
1992-08-01
影响因子:
1.7
作者:
NEREM, RM
通讯作者:
NEREM, RM
影响因子:
46.9
作者:
Helmlinger, G;Netti, PA;Jain, RK
通讯作者:
Jain, RK
影响因子:
17.1
作者:
Carey, Brent J.;Patra, Prabir K.;Ajayan, Pulickel M.
通讯作者:
Ajayan, Pulickel M.
影响因子:
10.2
作者:
Jones, Gareth Wyn;Chapman, S. Jonathan
通讯作者:
Chapman, S. Jonathan
影响因子:
4.6
作者:
KUNDLER, I;FINKELMANN, H
通讯作者:
FINKELMANN, H