编译 | 冯维维
Science, 12 AUG 2022, VOL 377, ISSUE 6607
《科学》2022年8月12日，第377卷，6607期
物理学Physics
Dynamics of active liquid interfaces
活性液体界面动力学
作者：RAYMOND ADKINSITAMAR KOLVIN, ZHIHONG YOU, SVEN WITTHAUS, M. CRISTINA MARCHETTI AND ZVONIMIR DOGIC
链接：
https://www.science.org/doi/10.1126/science.abo5423
摘要：
不相容的液体，如油和水，会以较低的界面张力相分离。作者研究了将主动向列相与被动各向同性相分离的一维界面的动力学。他们发现了波动界面的丰富行为，在这种界面中，相分离流体可以形成活性乳剂，而不会变浓，液滴会自发形成。
宏观界面还可以显示具有特征波数和波速的波的传播。此外，其中一种流体的活动，其中能量的添加驱动了该流体的顺序，能够修改润湿转变。作者还观察到固体表面的主动润湿，即与表面平行的主动伸展应力驱动流体逆重力爬上固体壁。
Abstract：
Incompatible liquids such as oil and water will phase separate with low interfacial tension. Adkins et al. investigated the dynamics of a one-dimensional interface separating an active nematic phase with a passive isotropic phase. They found a rich behavior of fluctuating interfaces in which the phase-separating fluids could form active emulsions that did not coarsen and in which droplets formed spontaneously. Macroscopic interfaces can also displayed propagating waves with a characteristic wave number and speed. Furthermore, the activity of one of the fluids, in which the addition of energy drove the ordering of that fluid, was able to modify the wetting transitions. The authors also observed active wetting of a solid surface whereby active extensile stresses parallel to the surface drove the fluid to climb a solid wall against gravity.
Proton-coupled energy transfer in molecular triads
分子三联体中的质子耦合能量转移
作者：BELINDA PETTERSSON RIMGARD, ZHEN TAO, GIOVANNY A. PARADA, LAURA F. COTTERSHARON HAMMES-SCHIFFER, JAMES M. MAYER, AND LEIF HAMMARSTROM
链接：
