Angewandte Chemie International Edition · 2009 · 470 citations · 19 references
EngineeringAutonomous SystemsActuatorsPhotonicsRoboticsColloidal Self-assemblyMolecular MachinesSchooling BehaviorWater TransportArtificial Molecular MachinesLight-responsive RobotsSchooling HydrodynamicsSwimming Motility
A new school of thought: Micrometer-sized silver chloride (AgCl) particles (red) in deionized water move under UV illumination by self-diffusiophoresis (see picture). Each AgCl particle secretes ions to which the other particles respond, and they are observed to "school" into regions with higher concentrations of particles. Photo-inactive silica particles (blue) also respond to the chemical secretion by swimming towards and surrounding individual AgCl particles.
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Self-Motile Colloidal Particles: From Directed Propulsion to Random Walk
Jonathan R. Howse, Richard Jones, Anthony J. Ryan et al. · Physical Review Letters · 2007 · 2.2K citations · Full text
Colloid Transport by Interfacial Forces
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Engineering, Physics, Fluid Dynamics +16
The genome of the social amoeba Dictyostelium discoideum
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