...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Dynamics of a vesicle in general flow
【24h】

Dynamics of a vesicle in general flow

机译：一般流动中囊泡的动力学

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An approach to quantitatively study vesicle dynamics as well as biologically-related micro-objects in a fluid flow, which is based on the combination of a dynamical trap and a control parameter, the ratio of the vorticity to the strain rate, is suggested. The flow is continuously varied between rotational, shearing, and elonga-tional in a microfluidic 4-roll mill device, the dynamical trap, that allows scanning of the entire phase diagram of motions, i.e., tank-treading (TT), tumbling (TU), and trembling (TR), using a single vesicle even at λ = η_(in)/-η_(out) = 1, where nin and njout are the viscosities of the inner and outer fluids. This cannot be achieved in pure shear flow, where the transition between TT and either TU or TR is attained only at λ>1. As a result, it is found that the vesicle dynamical states in a general are presented by the phase diagram in a space of only 2 dimensionless control parameters. The findings are in semiquantitative accord with the recent theory made for a quasi-spherical vesicle, although vesicles with large deviations from spherical shape were studied experimentally. The physics of TR is also uncovered.
机译：提出了一种基于动态陷阱和控制参数（涡度与应变率之比）的组合，定量研究流体流动中囊泡动力学以及与生物相关的微物体的方法。流量在微流控四辊轧机设备动态捕集器中的旋转，剪切和伸长之间连续变化，该动态捕集器允许扫描运动的整个相图，即，踩踏（TT），翻滚（TU） ）和颤抖（TR），即使在λ=η_（in）/-η_（out）= 1时也使用单个囊泡，其中nin和njout是内部和外部流体的粘度。这在纯剪切流中无法实现，在纯剪切流中，TT与TU或TR之间的过渡仅在λ> 1时才能实现。结果，发现在仅有2个无量纲控制参数的空间中，一般通过相图呈现囊泡动力学状态。该发现与准球形囊泡的最新理论是半定量的，尽管已经通过实验研究了与球形偏差较大的囊泡。 TR的物理学也被发现。

著录项

  • 来源
  • 作者

    J. Deschamps; V. Kantsler; E. Segre; V. Steinberg;

  • 作者单位

    Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 76100 Israel;

    Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 76100 Israel;

    Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 76100 Israel;

    Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 76100 Israel;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号