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Eine Polymerisationsreaktion treibt den ersten Mikromotor an, der nicht Teil eines biologischen Systems ist. Der Motor nutzt einen Grubbs‐Katalysator, der unsymmetrisch an Janus‐Mikrokügelchen mit einem Gold‐ und einem Siliciumdioxidteil angebracht ist (siehe Bild). Solche Motoren ergeben eine um bis zu 70 % erhöhte Diffusion in Lösungen des Monomers und zeigen eine Chemotaxis, wenn ein Monomergradient...
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