2019_EJRNL_PP_V__BACO_1.pdf
Terbatas Ratnasari
» ITB
Terbatas Ratnasari
» ITB
We investigate the dynamics of a deterministic self-propelled particle endowed with coherent memory.
We evidence experimentally and numerically that it exhibits several stable free states. The system is
composed of a self-propelled drop bouncing on a vibrated liquid driven by the waves it emits at each bounce. This object possesses a propulsion memory resulting from the coherent interference of the waves
accumulated along its path.We investigate here the transitory regime of the buildup of the dynamics which
leads to velocity modulations. Experiments and numerical simulations enable us to explore unchartered
areas of the phase space and reveal the existence of a self-sustained oscillatory regime. Finally, we show the coexistence of several free states. This feature emerges both from the spatiotemporal nonlocality of this
path memory dynamics as well as the wave nature of the driving mechanism.