摘要翻译：
合成生物分子蜘蛛的“腿”是由单链DNA片段组成的，它可以在一个表面上移动，这个表面也被与腿DNA互补的单链DNA片段覆盖。在实验的实现中，当一条腿第一次脱离表面的一个部分时，它改变了这个部分，腿随后更弱地结合在这些改变的部分上。受这些实验的启发，我们研究了沿着一维底物移动的蜘蛛，它们的腿离开新访问的位置的速度比重新访问的位置慢。对于随机游动（单腿蜘蛛），减速不影响长时间行为。然而，对于两足蜘蛛来说，减速产生了对未访问地点的有效偏见，蜘蛛的行为类似于兴奋行走。令人惊讶的是，蜘蛛在新地点的减速增加了扩散系数，加速了访问地点数量的增长。
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英文标题：
《Molecular Spiders with Memory》
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作者：
Tibor Antal and P. L. Krapivsky
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最新提交年份：
2007
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分类信息：

一级分类：Physics        物理学
二级分类：Statistical Mechanics        统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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一级分类：Mathematics        数学
二级分类：Probability        概率
分类描述：Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory
概率论与随机过程的理论与应用：例如中心极限定理，大偏差，随机微分方程，统计力学模型，排队论
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一级分类：Quantitative Biology        数量生物学
二级分类：Quantitative Methods        定量方法
分类描述：All experimental, numerical, statistical and mathematical contributions of value to biology
对生物学价值的所有实验、数值、统计和数学贡献
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英文摘要：
  Synthetic bio-molecular spiders with "legs" made of single-stranded segments of DNA can move on a surface which is also covered by single-stranded segments of DNA complementary to the leg DNA. In experimental realizations, when a leg detaches from a segment of the surface for the first time it alters that segment, and legs subsequently bound to these altered segments more weakly. Inspired by these experiments we investigate spiders moving along a one-dimensional substrate, whose legs leave newly visited sites at a slower rate than revisited sites. For a random walk (one-leg spider) the slowdown does not effect the long time behavior. For a bipedal spider, however, the slowdown generates an effective bias towards unvisited sites, and the spider behaves similarly to the excited walk. Surprisingly, the slowing down of the spider at new sites increases the diffusion coefficient and accelerates the growth of the number of visited sites.
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PDF链接：
https://arxiv.org/pdf/705.2596