半柔性棒状颗粒在柱状中间相中的分数跳跃型运动
Fractional hopping-type motion in columnar mesophase of semi-flexible rod-like particles
摘要：
我们报道了在水溶液中液晶柱状状态下强相互作用的丝状fd病毒颗粒的单粒子动力学。从荧光显微镜，我们发现，罕见的，离散的事件发生，其中个别粒子从事突然，跳跃式运动沿主杆轴。的跳跃长度分布是双峰和集中在一半和全粒子长度。我们的布朗动力学模拟硬半柔性粒子模仿我们的实验，并表明，全长跳跃必须是由于集体动力学中，粒子在相邻列之间和之间的字符串一样的方式移动，而半跳跃出现作为一个结果，粒子移动到缺陷。我们发现，柱相的有限域结构强烈影响所观察到的动力学。
英文摘要：
We report on single-particle dynamics of strongly interacting filamentous fd virus particles in the liquid-crystalline columnar state in aqueous solution. From fluorescence microscopy we find that rare, discrete events take place, in which individual particles engage in sudden, jump-like motion along the main rod axis. The jump length distribution is bimodal and centered at half and full particle lengths. Our Brownian dynamics simulations of hard semi-flexible particles mimic our experiments, and indicate that full-length jumps must be due to collective dynamics in which particles move in string-like fashion in and between neighboring columns, while half jumps arise as a result of particles moving into defects. We find that the finite domain structure of the columnar phase strongly influences the observed dynamics.
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