论文标题
移动的单极源上的自辐射力
Self radiation force on a moving monopolar source
论文作者
论文摘要
自从雷利，兰格文和布里鲁因早期工作以来，声波施加在物体上的辐射力是一种广泛研究的现象，并在过去十年中导致了声学微观裂变的巨大发展。尽管在这种现象上进行了广泛的工作，但到目前为止，施加在粒子上的声辐射力的表达仅是为稳定的粒子得出的，因此忽略了其位移对辐射波的影响。在这项工作中，我们研究了与声速相比，在恒定速度的单极源上施加的声辐射力。我们证明，多普勒效应引起的发射场的不对称性会在其运动相对的源上诱导辐射力。
The radiation force exerted on an object by an acoustic wave is a widely studied phenomenon since the early work of Rayleigh, Langevin and Brillouin and has led in the last decade to tremendous developments for acoustic micromanipulation. Despite extensive work on this phenomenon, the expressions of the acoustic radiation force applied on a particle have so far been derived only for a steady particle, hence neglecting the effect of its displacement on the radiated wave. In this work we study the acoustic radiation force exerted on a monopolar source translating at a constant velocity small compared to the sound speed. We demonstrate that the asymmetry of the emitted field resulting from Doppler effect induces a radiation force on the source opposite to its motion.
