2012
DOI: 10.1103/physreve.85.055201
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Swarming of self-propelled camphor boats

Abstract: When an ensemble of self-propelled camphor boats move in a one-dimensional channel, they exhibit a variety of collective behaviors. Under certain conditions, the boats tend to cluster together and move in a relatively tight formation. This type of behavior, referred to as clustering or swarming here, is one of three types recently observed in experiment. Similar clustering behavior is also reproduced in simulations based on a simple theoretical model. Here we examine this model to determine the clustering mech… Show more

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Cited by 37 publications
(44 citation statements)
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“…On the other hand, a symmetric camphor disk can move in a certain direction that is determined by the initial condition or fluctuations, and it can be regarded as a self-propelled particle without embedded asymmetry. Camphor particles have also been used to study various kinds of behavior of self-propelled particles such as jamming [21,22], cooperative motion [23][24][25], and nonequilibrium distribution of velocities [26]. The motion caused by the spontaneous symmetry breaking is described in terms of bifurcations.…”
Section: Introductionmentioning
confidence: 99%
“…On the other hand, a symmetric camphor disk can move in a certain direction that is determined by the initial condition or fluctuations, and it can be regarded as a self-propelled particle without embedded asymmetry. Camphor particles have also been used to study various kinds of behavior of self-propelled particles such as jamming [21,22], cooperative motion [23][24][25], and nonequilibrium distribution of velocities [26]. The motion caused by the spontaneous symmetry breaking is described in terms of bifurcations.…”
Section: Introductionmentioning
confidence: 99%
“…Consequently, the profile of the surface concentration becomes asymmetric [14][15][16]. This camphor-water system has attracted attention since it exhibits interesting and complicated phenomena such as collective motion [17][18][19] and jamming [20] in spite of its simple setup.…”
mentioning
confidence: 99%
“…[33][34][35] Even the camphor boats represent similar system. 36,37 In these systems, the motion of particles is governed by a local gradient of the surface tension created by a chemical entity (e.g., polymer gel, camphor particles) emitting surface active substances, thus changing locally the surface tension near the chemical object at the liquid-air interface. This is in contrast to our system, in which the surface tension gradient is established globally (independently of tracer particles) and exists through the maze.…”
Section: Discussionmentioning
confidence: 99%