Extension and measurements on multicomponent phospholipid vesicles by use of dual-beam optical tweezers

Masatoshi Ichikawa, Yoko Shitamichi, Yasuyuki Kimura

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

A micrometer-sized giant vesicle is studied by extending from the inside by using dual-beam optical tweezers in order to measure mechanical properties such as bending rigidity and surface tension of the membrane. As a micrometer-sized vesicle is extended, its shape gradually changes from a sphere to a lemon-shape, and discretely the lemon-shape deforms into a shape of a tube beside a sphere or a lemon part. The surface tension and the bending rigidity of the lipid membrane are obtained from the measured force-extension curve. In the one-phase vesicle, it is found that the surface tension is increasing as the charged component increasing, but the bending rigidity remains almost constant. In the phase-separated vesicle, the characteristic deformation different from one in the one-phase vesicle has been observed.

本文言語英語
ホスト出版物のタイトル20th Anniversary MHS 2009 and Micro-Nano Global COE - 2009 International Symposium on Micro-NanoMechatronics and Human Science
ページ170-175
ページ数6
DOI
出版ステータス出版済み - 12 1 2009
イベント20th Anniversary MHS 2009 and Micro-Nano Global COE - 2009 International Symposium on Micro-NanoMechatronics and Human Science - Nagoya, 日本
継続期間: 11 8 200911 11 2009

出版物シリーズ

名前20th Anniversary MHS 2009 and Micro-Nano Global COE - 2009 International Symposium on Micro-NanoMechatronics and Human Science

その他

その他20th Anniversary MHS 2009 and Micro-Nano Global COE - 2009 International Symposium on Micro-NanoMechatronics and Human Science
Country日本
CityNagoya
Period11/8/0911/11/09

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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