论文标题
时间逆转对称和不对称的纳米温水，以软物质的电场为导向
Comparison of time reversal symmetric and asymmetric nano-swimmers oriented with an electric field in soft matter
论文作者
论文摘要
使用分子动力学模拟，我们比较了基于purcell的纳米温水的运动，这表明具有不对称循环的电动机与同一分子运动的运动和时间对称循环的运动。我们表明，尽管局部结构和中等波动，但Purcell定理仍在纳米级。然后，为了使游泳者流离失所和增加定理的崩溃，我们研究了电场对这些游泳者偏振版本的影响。对于小田地，正如珀塞尔（Purcell）所建议的那样，不对称游泳者的时间更有效。但是，我们发现了一个场范围，该场范围为时间对称电动机打破了Purcell定理。结果表明，定理的分解是由方向场和布朗力的竞争引起的，而对于较大的田地，该场破坏了恢复定理的波动效果。
Using molecular dynamics simulations we compare the motion of a nano-swimmer based on Purcell suggested motor with a time asymmetrical cycle with the motion of the same molecular motor with a time symmetrical cycle. We show that Purcell theorem still holds at the nanoscale, despite the local structure and the medium fluctuations. Then, with the purpose of both orienting the swimmer displacement and increasing the breakdown of the theorem, we study the effect of an electric field on a polarized version of these swimmers. For small and large fields, the time asymmetrical swimmer is more efficient, as suggested by Purcell. However we find a field range for which Purcell theorem is broken for the time symmetric motor. Results suggest that the breakdown of the theorem is arising from the competition of the orientation field and Brownian forces, while for larger fields the field destroys the effect of fluctuations restoring the theorem.
