Programming emergent symmetries with saddle-splay elasticity
Programming emergent symmetries with saddle-splay elasticity
复制标题
使用鞍形弹性对涌现对称性进行编程
DOI:
10.1038/s41467-019-13012-9
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发表时间:
2019
影响因子:
16.6
通讯作者:
Yang, Shu
中科院分区:
文献类型:
--
作者:
Xia, Yu;DeBenedictis, Andrew A.;Kim, Dae Seok;Chen, Shenglan;Kim, Se-Um;Cleaver, Douglas J.;Atherton, Timothy J.;Yang, Shu
The director field adopted by a confined liquid crystal is controlled by a balance between the externally imposed interactions and the liquid’s internal orientational elasticity. While the latter is usually considered to resist all deformations, liquid crystals actually have an intrinsic propensity to adopt saddle-splay arrangements, characterised by the elastic constant. In most realisations, dominant surface anchoring treatments suppress such deformations, renderingimmeasurable. Here we identify regimes where more subtle, patterned surfaces enable saddle-splay effects to be both observed and exploited. Utilising theory and continuum calculations, we determine experimental regimes where generic, achiral liquid crystals exhibit spontaneously broken surface symmetries. These provide a new route to measuring. We further demonstrate a multistable device in which weak, but directional, fields switch between saddle-splay-motivated, spontaneously-polar surface states. Generalising beyond simple confinement, our highly scalable approach offers exciting opportunities for low-field, fast-switching optoelectronic devices which go beyond current technologies.
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影响因子:
4.6
作者:
ERICKSEN, JL
通讯作者:
ERICKSEN, JL
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
F. Serra;M. Buscaglia;T. Bellini
通讯作者:
T. Bellini
影响因子:
4
作者:
Tsakonas, C.;Davidson, A. J.;Mottram, N. J.
通讯作者:
Mottram, N. J.
DOI:
--
发表时间:
1982
期刊:
影响因子:
--
作者:
N. V. Madhusudana;R. Pratibha
通讯作者:
R. Pratibha
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
Sara Mason
通讯作者:
Sara Mason