Surface roughness-induced speed increase for active Janus micromotors

We demonstrate a simple physical fabrication method to control surface roughness of Janus micromotors and fabricate self-propelled active Janus microparticles with rough catalytic platinum surfaces that show a four-fold increase in their propulsion speed compared to conventional Janus particles coat...

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Veröffentlicht in:	Chemical communications (Cambridge, England) England), 2015-01, Vol.51 (41), p.8660-8663
Hauptverfasser:	Choudhury, Udit, Soler, Lluís, Gibbs, John G, Sanchez, Samuel, Fischer, Peer
Format:	Artikel
Sprache:	eng
Schlagworte:	Active control Catalysis catalytic activity Catalytic nanomotors Catàlisi chemical reactions Chemistry Enginyeria mecànica Física Janus Micromechanics Micromecànica Micromotors Microparticles Nanoparticles Platinum Roughness Surface chemistry surface roughness Àrees temàtiques de la UPC
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Beschreibung
Zusammenfassung:	We demonstrate a simple physical fabrication method to control surface roughness of Janus micromotors and fabricate self-propelled active Janus microparticles with rough catalytic platinum surfaces that show a four-fold increase in their propulsion speed compared to conventional Janus particles coated with a smooth Pt layer.
ISSN:	1359-7345 1364-548X 1364-548X
DOI:	10.1039/c5cc01607j