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Bubble-Propelled Micromotors for Enhanced Transport of Passive Tracers

Orozco, Jahir and Jurado-Sánchez, Beatriz and Wagner, Gregory and Gao, Wei and Vazquez-Duhalt, Rafael and Sattayasamitsathit, Sirilak and Galarnyk, Michael and Cortés, Allan and Saintillan, David and Wang, Joseph (2014) Bubble-Propelled Micromotors for Enhanced Transport of Passive Tracers. Langmuir, 30 (18). pp. 5082-5087. ISSN 0743-7463. http://resolver.caltech.edu/CaltechAUTHORS:20180123-080904041

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Abstract

Fluid convection and mixing induced by bubble-propelled tubular microengines are characterized using passive microsphere tracers. Enhanced transport of the passive tracers by bubble-propelled micromotors, indicated by their mean squared displacement (MSD), is dramatically larger than that observed in the presence of catalytic nanowires and Janus particle motors. Bubble generation is shown to play a dominant role in the effective fluid transport observed in the presence of tubular microengines. These findings further support the potential of using bubble-propelled microengines for mixing reagents and accelerating reaction rates. The study offers useful insights toward understanding the role of the motion of multiple micromotors, bubble generation, and additional factors (e.g., motor density and fuel concentration) upon the observed motor-induced fluid transport.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/la500819rDOIArticle
http://pubs.acs.org/doi/abs/10.1021/la500819rPublisherArticle
http://pubs.acs.org/doi/suppl/10.1021/la500819rPublisherSupporting Information
Additional Information:© 2014 American Chemical Society. Received 4 March 2014. Published online 23 April 2014. Published in print 13 May 2014. This project received support from the Defense Threat Reduction Agency-Joint Science and Technology Office for Chemical and Biological Defense (Grant no. HDTRA1-13-1-0002). B.J.-S. acknowledges support from the People Programme (Marie Curie Actions) of the EU 7th Framework Programme (FP7 2007-2013) under REA Grant PIOF-GA-2012-326476. D.S. acknowledges support from NSF CAREER Grant CBET-1150590. W.G. is a HHMI International Student Research fellow. Author Contributions: The manuscript was written through contributions of all authors. All authors have given approval to the final version of the manuscript. The authors declare no competing financial interest.
Funders:
Funding AgencyGrant Number
Defense Threat Reduction Agency (DTRA)HDTRA1-13-1-0002
Marie Curie FellowshipPIOF-GA-2012-326476
NSFCBET-1150590
Howard Hughes Medical Institute (HHMI)UNSPECIFIED
Record Number:CaltechAUTHORS:20180123-080904041
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180123-080904041
Official Citation:Bubble-Propelled Micromotors for Enhanced Transport of Passive Tracers Jahir Orozco, Beatriz Jurado-Sánchez, Gregory Wagner, Wei Gao, Rafael Vazquez-Duhalt, Sirilak Sattayasamitsathit, Michael Galarnyk, Allan Cortés, David Saintillan, and Joseph Wang Langmuir 2014 30 (18), 5082-5087 DOI: 10.1021/la500819r
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84466
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:31 Jan 2018 23:06
Last Modified:31 Jan 2018 23:06

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