Critical dynamics in the pearling instability of membranes
Critical dynamics in the pearling instability of membranes
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DOI：
10.1103/physrevlett.79.1158
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发表时间：
1997-08-11
影响因子：
8.6
通讯作者：
Moses, E
中科院分区：
文献类型：
--
作者：
BarZiv, R;Tlusty, T;Moses, E
我们报告定量测量阈值以上的珠状不稳定性的圆柱形膜。在光镊作用下，不稳定性以一定的波长和速度从激光阱向外传播。所有测量的量都与减小的张力控制参数σ =（Sigma - Sigma（c））/Sigma（c）成比例。观察到一个临界的不稳定性开始放缓。速度、波长和延迟时间的值符合边际稳定性和线性分析。非常接近阈值的测量被热波动强烈掩盖。
We report quantitative measurements above threshold in the pearling instability of cylindrical membranes. Induced by optical tweezers, the instability propagates outward from the laser trap with well defined wavelength, and velocity. All measured quantities scale with the reduced tension control parameter epsilon = (Sigma - Sigma(c))/Sigma(c). A critical slowing down for initiation of the instability is observed. The values of the velocity, wavelength, and delay time agree with marginal stability and linear analysis. Measurements very close to threshold are strongly masked by thermal fluctuations.