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Reversible Swarming and Separation of Self-Propelled Chemically Powered Nanomotors under Acoustic Fields

Xu, Tailin and Soto, Fernando and Gao, Wei and Dong, Renfeng and Garcia-Gradilla, Victor and Magaña, Ernesto and Zhang, Xueji and Wang, Joseph (2015) Reversible Swarming and Separation of Self-Propelled Chemically Powered Nanomotors under Acoustic Fields. Journal of the American Chemical Society, 137 (6). pp. 2163-2166. ISSN 0002-7863. http://resolver.caltech.edu/CaltechAUTHORS:20180122-100956295

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Abstract

The collective behavior of biological systems has inspired efforts toward the controlled assembly of synthetic nanomotors. Here we demonstrate the use of acoustic fields to induce reversible assembly of catalytic nanomotors, controlled swarm movement, and separation of different nanomotors. The swarming mechanism relies on the interaction between individual nanomotors and the acoustic field, which triggers rapid migration and assembly around the nearest pressure node. Such on-demand assembly of catalytic nanomotors is extremely fast and reversible. Controlled movement of the resulting swarm is illustrated by changing the frequency of the acoustic field. Efficient separation of different types of nanomotors, which assemble in distinct swarming regions, is illustrated. The ability of acoustic fields to regulate the collective behavior of catalytic nanomotors holds considerable promise for a wide range of practical applications.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/ja511012vDOIArticle
http://pubs.acs.org/doi/abs/10.1021/ja511012vPublisherArticle
http://pubs.acs.org/doi/suppl/10.1021/ja511012vPublisherSupporting Information
Additional Information:© 2015 American Chemical Society. Received 31 October 2014. Published online 29 January 2015. Published in print 18 February 2015. 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). T.X. and R.D. acknowledge financial support from the China Scholarship Council (CSC) and V.G. from Centro de Nanociencias y Nanotecnología UNAM Mexico.
Funders:
Funding AgencyGrant Number
Defense Threat Reduction Agency (DTRA)HDTRA1-13-1-0002
China Scholarship CouncilUNSPECIFIED
Universidad National Autonoma de Mexico (UNAM)UNSPECIFIED
Record Number:CaltechAUTHORS:20180122-100956295
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180122-100956295
Official Citation:Reversible Swarming and Separation of Self-Propelled Chemically Powered Nanomotors under Acoustic Fields Tailin Xu, Fernando Soto, Wei Gao, Renfeng Dong, Victor Garcia-Gradilla, Ernesto Magaña, Xueji Zhang, and Joseph Wang Journal of the American Chemical Society 2015 137 (6), 2163-2166 DOI: 10.1021/ja511012v
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84449
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:23 Jan 2018 13:10
Last Modified:31 Jan 2018 00:31

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