由曲率调制驱动的活性片层运动
Locomotion of Active Sheets Driven by Curvature Modulation
AI总结：
本文通过实验与理论结合，首次定量研究活性凝胶带在弯曲界面上通过周期性曲率调制实现运动，并验证了曲率失配驱动模型对速度剖面的预测。
摘要：
柔性膜状生物体在弯曲表面上的运动在不同情境和尺度中均有出现。然而，这类动力学尚未被定量建模，也尚未在人造系统中实现这种运动。我们展示了一项实验与理论研究，研究活性凝胶带通过周期性调制其参考曲率在弯曲的流体-流体界面上滑行。我们推导了一个理论模型，其中力和力矩源于凝胶带与基底之间的曲率失配。运动方程的解析解和数值解成功预测了实验测得的速度剖面。最后，我们强调了这种新型的、由曲率驱动的运动模式在广泛的力学系统以及生物系统中的相关性。
英文摘要：
The locomotion of flexible membrane-like organisms on top of curved surfaces appears in different contexts and scales. Still, such dynamics have not yet been quantitatively modeled and no realization of such motion in manmade systems has been achieved. We present an experimental and theoretical study of active gel ribbons surfing on a curved fluid-fluid interface via periodic modulation of their reference curvature. We derive a theoretical model, in which forces and torques emerge from curvature mismatch between the ribbon and the substrate. Analytic and numerical solutions of the equations of motion successfully predict the experimentally measured velocity profiles. We conclude by highlighting the relevance of this new, curvature-driven, mode of locomotion for a broad range of mechanical, as well as biological systems.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
