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https://hdl.handle.net/10119/9073
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| Title: | Rhythmic pore dynamics in a shrinking lipid vesicle |
| Authors: | Hamada, Tsutomu
Hirabayashi, Yuichi
Ohta, Takao
Takagi, Masahiro |
| Keywords: | lipid membrane
vesicle
nonequilibrium
oscillation
pore |
| Issue Date: | 2009-11-24 |
| Publisher: | American Physical Society |
| Magazine name: | Physical Review E |
| Volume: | 80 |
| Number: | 5 |
| Start page: | 51921-1 |
| End page: | 51921-7 |
| DOI: | 10.1103/PhysRevE.80.051921 |
| Abstract: | The rhythmic motion of membrane pore behavior under nonequilibrium conditions was studied. Application of the surfactant triton X-100 (TX-100) caused lipid vesicles to exhibit two types of shrinking dynamics with pore generation, which depended on both the size of the vesicles and the concentration of added TX-100. Small vesicles and the addition of a low concentration of TX-100 resulted in rhythmic-pore dynamics, where a transient pore was generated within a vesicle in a repetitive manner. In contrast, large vesicles and a high concentration of TX-100 led to continuous-pore dynamics, where the vesicle maintained an open pore during the shrinking process. In the rhythmic-pore membrane, long-cycle oscillation was observed with large vesicles and a low concentration TX-100. The period of one cycle decreased with a decrease in the vesicle size and an increase in the TX-100 concentration. We discuss the mechanism of these trends by considering the elastic free energy of the membrane. |
| Rights: | Tsutomu Hamada, Yuichi Hirabayashi, Takao Ohta, Masahiro Takagi, Physical Review E, 80(5), 2009, 51921-1-51921-7. Copyright 2009 by the American Physical Society. http://dx.doi.org/10.1103/PhysRevE.80.051921 |
| URI: | https://hdl.handle.net/10119/9073 |
| Material Type: | publisher |
| Appears in Collections: | c10-1. 雑誌掲載論文 (Journal Articles)
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| 15444-1.pdf | | 423Kb | Adobe PDF | View/Open |
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