Abstract
The mechanical properties of a micrometer-sized giant liposome are studied by deforming it from the inside using dual-beam optical tweezers. As the liposome is extended, its shape changes from a sphere to a lemon shape, and finally, a tubular part is generated. The surface tension σ and the bending rigidity κ of the lipid membrane are obtained from the measured force-extension curve. In a one-phase liposome, it was found that σ increases as the charged component increases but κ remains approximately constant. In a two-phase liposome, the characteristic deformation and the force-extension curve differ from those observed for the one-phase liposome.
| Original language | English |
|---|---|
| Pages (from-to) | 274-278 |
| Number of pages | 5 |
| Journal | Chemical Physics Letters |
| Volume | 479 |
| Issue number | 4-6 |
| DOIs | |
| Publication status | Published - Sep 17 2009 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
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Shitamichi, Y., Ichikawa, M., & Kimura, Y. (2009). Mechanical properties of a giant liposome studied using optical tweezers. Chemical Physics Letters, 479(4-6), 274-278. https://doi.org/10.1016/j.cplett.2009.08.018