HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >

Large-scale self-organization of reconfigurable topological defect networks in nematic liquid crystals

This item is licensed under:Creative Commons Attribution 4.0 International

Files in This Item:
Supplementary Information.pdf890.44 kBPDFView/Open
ncomms13238.pdf3.35 MBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Large-scale self-organization of reconfigurable topological defect networks in nematic liquid crystals
Authors: Sasaki, Yuji Browse this author →KAKEN DB
Jampani, V. S. R. Browse this author
Tanaka, Chiharu Browse this author
Sakurai, Nobutaka Browse this author
Sakane, Shin Browse this author
Le, Khoa V. Browse this author
Araoka, Fumito Browse this author
Orihara, Hiroshi Browse this author →KAKEN DB
Issue Date: 7-Nov-2016
Publisher: Nature Publishing Group
Journal Title: Nature communications
Volume: 7
Start Page: 13238
Publisher DOI: 10.1038/ncomms13238
Abstract: Topological defects in nematic liquid crystals are ubiquitous. The defects are important in understanding the fundamental properties of the systems, as well as in practical applications, such as colloidal self-assembly, optical vortex generation and templates for molecular self-assembly. Usually, spatially and temporally stable defects require geometrical frustration imposed by surfaces; otherwise, the system relaxes because of the high cost of the elastic energy. So far, multiple defects are kept in bulk nematic liquid crystals by top-down lithographic techniques. In this work, we stabilize a large number of umbilical defects by doping with an ionic impurity. This method does not require pre-patterned surfaces. We demonstrate that molecular reorientation controlled by an AC voltage induces periodic density modulation of ions accumulated at an electrically insulating polymer interface, resulting in self-organization of a two-dimensional square array of umbilical defects that is reconfigurable and tunable.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 折原 宏

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University