标题： 软活性物质中通过协作机制的运动传输 显示英文标题

标题： Transmission of mobility via cooperative mechanisms in soft active matter

摘要： 当过冷时，液体的粘度在接近玻璃化转变温度时显著增加。 尽管这种行为的物理起源仍未被理解，但现在已明确，添加少量激活粒子能够逆转粘度的增加。 在此我们进一步提出关于该流体化过程的极限以及流体化液体与其粘性对应物之间的差异的问题。 结果表明，少量活性分子就足以触发相变，导致扩散系数类似于液体，而介质仍保持粘性相的协同特性。 活性分子和非活性分子的协同特性之间的相似性表明，活性分子的流动性通过介质的协同机制传递给非活性分子，这一结果与促进理论一致。 这一结果通过大多数移动活性分子和非活性分子的不同 van hove 关联函数的行为进行了比较而得到确认。 有趣的是，在我们的模拟中，协同机制并不是由激发浓度的降低所引起或相关的。 显示英文摘要

摘要： When supercooled, liquids viscosity increases dramatically as the glass transition temperature is approached. While the physical origin of this behavior is still not understood, it is now well established that the addition of a few activated particles is able to reverse that increase in viscosity. Here we further raise the question of a limit in that fluidization process and of the differences between the fluidized liquid and its viscous counterpart. Results show that a few percent active molecules are enough to trigger a phase transition leading to diffusion coefficients typical of liquids while the medium retains cooperative properties of the viscous phase. The similarity between cooperative properties of the active and non active molecules suggests that the mobility of active molecules is transmitted to inactive ones via the medium cooperative mechanisms, a result in agreement with facilitation theories. This result is then confirmed by the compared behavior of the distinct van hove correlation functions of most mobile active and non active molecules. Interestingly enough, in our simulations the cooperative mechanisms are not induced or related to a decrease of the excitation concentration.