期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 110, 期 49, 页码 19689-19694出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1319473110
关键词
random walks; angular correlation; cytoskeleton
资金
- WM Keck Foundation
- Novo Nordisk
- National Science Foundation (NSF) Division of Materials Research (DMR) Materials Research Science and Engineering Center (MRSEC) [0820054]
- National Institutes of Health (NIH) [R01-DK092616, P30-DK020595]
- NSF Division of Physics (PHY) [1066293]
Analyses of random walks traditionally use the mean square displacement (MSD) as an order parameter characterizing dynamics. We show that the distribution of relative angles of motion between successive time intervals of random walks in two or more dimensions provides information about stochastic processes beyond the MSD. We illustrate the behavior of this measure for common models and apply it to experimental particle tracking data. For a colloidal system, the distribution of relative angles reports sensitively on caging as the density varies. For transport mediated by molecular motors on filament networks in vitro and in vivo, we discover self-similar properties that cannot be described by existing models and discuss possible scenarios that can lead to the elucidated statistical features.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据