A fuel-free autonomous self-propelled motor is illustrated. The motor is powered by the chemistry of calcium carbide and utilising water as a co-reactant, through a polymer encapsulation strategy. Expulsion of acetylene bubbles powers the capsule motor. This is an important step, going beyond the toxic hydrogen peroxide fuel used normally, to find alternative propellants for self-propelled machines.
J. G. S. Moo, H. Wang and M. Pumera, Chem. Commun., 2014, 50, 15849 DOI: 10.1039/C4CC07218A
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