Two-dimensional assemblies of nematic colloids in homeotropic cells and their response to electric fields

Yuta Tamura, Yasuyuki Kimura

研究成果: Contribution to journalArticle

2 引用 (Scopus)

抜粋

Micrometer-sized colloidal particles dispersed in nematic liquid crystals interact with each other through anisotropic interactions induced by orientational deformation of the nematic field. In the case of so-called dipole nematic colloids, their interaction is of the dipole-dipole type. Two-dimensional, non-close-packed colloidal assemblies having various characteristics were fabricated using optical tweezers by exploiting the attraction between anti-parallel dipole nematic colloids in homeotropically aligned nematic cells. Structures comprising polygons, squares, and tetrahedra were built using equal-sized particles, and hexagonal structures were built using particles of two sizes. As the nematic field is sensitive to electric fields, the response of the fabricated assemblies toward an alternating electric field was also studied. All assemblies exhibited homogeneous reversible shrinkage, and their shrinkage rates were dependent on the structure. The maximum shrinkage rate in the linear dimension of the assemblies was over 20% at 5 Vrms for a hexagon comprising tetrahedral units.

元の言語英語
ページ(範囲)6817-6826
ページ数10
ジャーナルSoft Matter
12
発行部数32
DOI
出版物ステータス出版済み - 1 1 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics

フィンガープリント Two-dimensional assemblies of nematic colloids in homeotropic cells and their response to electric fields' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用