Engineering sensorial delay to control phototaxis and emergent collective behaviors

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dc.citation.epage011008-16en_US
dc.citation.issueNumber1en_US
dc.citation.spage011008-1en_US
dc.citation.volumeNumber6en_US
dc.contributor.authorMijalkov, M.en_US
dc.contributor.authorMcDaniel, A.en_US
dc.contributor.authorWehr, J.en_US
dc.contributor.authorVolpe, G.en_US
dc.date.accessioned2018-04-12T10:43:29Z
dc.date.available2018-04-12T10:43:29Z
dc.date.issued2016-01en_US
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractCollective motions emerging from the interaction of autonomous mobile individuals play a key role in many phenomena, from the growth of bacterial colonies to the coordination of robotic swarms. For these collective behaviors to take hold, the individuals must be able to emit, sense, and react to signals. When dealing with simple organisms and robots, these signals are necessarily very elementary; e.g., a cell might signal its presence by releasing chemicals and a robot by shining light. An additional challenge arises because the motion of the individuals is often noisy; e.g., the orientation of cells can be altered by Brownian motion and that of robots by an uneven terrain. Therefore, the emphasis is on achieving complex and tunable behaviors fromsimple autonomous agents communicating with each other in robust ways. Here, we show that the delay between sensing and reacting to a signal can determine the individual and collective long-term behavior of autonomous agents whose motion is intrinsically noisy. We experimentally demonstrate that the collective behavior of a group of phototactic robots capable of emitting a radially decaying light field can be tuned from segregation to aggregation and clustering by controlling the delay with which they change their propulsion speed in response to the light intensity they measure. We track this transition to the underlying dynamics of this system, in particular, to the ratio between the robots' sensorial delay time and the characteristic time of the robots' random reorientation. Supported by numerics, we discuss how the same mechanism can be applied to control active agents, e.g., airborne drones, moving in a three-dimensional space. Given the simplicity of this mechanism, the engineering of sensorial delay provides a potentially powerful tool to engineer and dynamically tune the behavior of large ensembles of autonomous mobile agents; furthermore, this mechanism might already be at work within living organisms such as chemotactic cells.en_US
dc.identifier.doi10.1103/PhysRevX.6.011008en_US
dc.identifier.issn2160-3308
dc.identifier.urihttp://hdl.handle.net/11693/36534
dc.language.isoEnglishen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttps://doi.org/10.1103/PhysRevX.6.011008en_US
dc.source.titlePhysical Review Xen_US
dc.subjectBiologyen_US
dc.subjectBrownian movementen_US
dc.subjectCell engineeringen_US
dc.subjectMobile agentsen_US
dc.subjectRobotsen_US
dc.subjectAutonomous mobile agenten_US
dc.subjectBacterial coloniesen_US
dc.subjectCharacteristic timeen_US
dc.subjectCollective behavioren_US
dc.subjectCollective motionsen_US
dc.subjectLong-term behavioren_US
dc.subjectThree dimensional spaceen_US
dc.subjectUnderlying dynamicsen_US
dc.subjectAutonomous agentsen_US
dc.titleEngineering sensorial delay to control phototaxis and emergent collective behaviorsen_US
dc.typeArticleen_US

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Department of Physics
Institute of Materials Science and Nanotechnology (UNAM)