Optical Manipulation of Defects in a Lyotropic Lamellar Phase

Yasutaka Iwashita, Hajime Tanaka

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Here we study the line defect in a hyperswollen lamellar phase of lyotropic liquid crystal by applying a laser trapping method. We have succeeded in directly measuring the tension of a single isolated line defect and the adhesion energy between two defects. We demonstrate a new possibility of intentional patterning of various defects by direct optical manipulation. Furthermore, local rheological measurements provide information on the membrane organization around a particle and also evidence suggesting that flow in a lamellar phase has a two-dimensional nature.

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical review letters
Issue number4
Publication statusPublished - 2003

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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