论文标题
站立的Leidenfrost滴与Sufi-Whirling
A standing Leidenfrost drop with Sufi-whirling
论文作者
论文摘要
Leidenfrost下降的移动性已被利用用于操纵下降动作。在经典模型中，在没有触摸表面的情况下，通过蒸气垫悬浮了Leidenfrost滴。在这里，我们在加热的疏水表面上报告了一个站立的leidenfrost状态，其中滴在表面上以部分粘附和进一步的自我旋转状态（如Sufi-Whirring）。为了阐明这一新现象，我们成像了部分粘附，内部循环和滴度的椭圆形旋转的演变。稳定的部分粘附伴随着热和机械平衡，并进一步驱动了下降旋转的发展。
The mobility of Leidenfrost drop has been exploited for the manipulation of drop motions. In the classical model, the Leidenfrost drop was levitated by a vapor cushion, in the absence of touch to the surface. Here we report a standing Leidenfrost state on a heated hydrophobic surface where drop stands on the surface with partial adhesion and further self-rotates like Sufi-whirling. To elucidate this new phenomenon, we imaged the evolution of the partial adhesion, the inner circulation, and the ellipsoidal rotation of the drop. The stable partial adhesion is accompanied by thermal and mechanical equilibrium, and further drives the development of the drop rotation.
