Chemotaxis of Cargo-Carrying Self-Propelled Particles

Active particles with their characteristic feature of self-propulsion are regarded as the simplest models for motility in living systems. The accumulation active low activity regions has led to general belief that chemotaxis requires additional features and at least a minimal ability process information control motion. We show self-propelled display move into higher activity, if perform work on passive objects, or cargo, which they bound. origin this cooperative is exploration gradient by particle when bound load, resulting an average excess force load direction activity. Using minimalistic theoretical model, we capture most relevant these active-passive dimers particular predict crossover between anti-chemotactic chemotactic behaviour. Moreover merely connecting chains sufficient obtain from anti-chemotaxis increasing chain length. Such complex capable moving up such provided fuel accumulate where concentration its maximum. observed transition significance proto-forms life enabling them locate source nutrients even absence any supporting sensomotoric apparatus.