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Article: Active Patchy Colloids with Shape-Tunable Dynamics

TitleActive Patchy Colloids with Shape-Tunable Dynamics
Authors
KeywordsAspect ratio
Chemical bonds
Electric fields
Autonomous locomotion
Colloidal particle
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html
Citation
Journal of the American Chemical Society, 2019, v. 141 n. 37, p. 14853-14863 How to Cite?
AbstractControlling the complex dynamics of active colloids—the autonomous locomotion of colloidal particles and their spontaneous assembly—is challenging yet crucial for creating functional, out-of-equilibrium colloidal systems potentially useful for nano- and micromachines. Herein, by introducing the synthesis of active “patchy” colloids of various low-symmetry shapes, we demonstrate that the dynamics of such systems can be precisely tuned. The low-symmetry patchy colloids are made in bulk via a cluster-encapsulation-dewetting method. They carry essential information encoded in their shapes (particle geometry, number, size, and configurations of surface patches, etc.) that programs their locomotive and assembling behaviors. Under AC electric field, we show that the velocity of particle propulsion and the ability to brake and steer can be modulated by having two asymmetrical patches with various bending angles. The assembly of monopatch particles leads to the formation of dynamic and reconfigurable structures such as spinners and “cooperative swimmers” depending on the particle’s aspect ratios. A particle with two patches of different sizes allows for “directional bonding”, a concept popular in static assemblies but rare in dynamic ones. With the capability to make tunable and complex shapes, we anticipate the discovery of a diverse range of new dynamics and structures when other external stimuli (e.g., magnetic, optical, chemical, etc.) are employed and spark synergy with shapes.
Persistent Identifierhttp://hdl.handle.net/10722/278123
ISSN
2017 Impact Factor: 14.357
2015 SCImago Journal Rankings: 7.123

 

DC FieldValueLanguage
dc.contributor.authorWang, Z-
dc.contributor.authorWang, Z-
dc.contributor.authorLi, J-
dc.contributor.authorCheung, STH-
dc.contributor.authorTian, C-
dc.contributor.authorKim, SH-
dc.contributor.authorYi, GR-
dc.contributor.authorDucrot, E-
dc.contributor.authorWang, Y-
dc.date.accessioned2019-10-04T08:07:56Z-
dc.date.available2019-10-04T08:07:56Z-
dc.date.issued2019-
dc.identifier.citationJournal of the American Chemical Society, 2019, v. 141 n. 37, p. 14853-14863-
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10722/278123-
dc.description.abstractControlling the complex dynamics of active colloids—the autonomous locomotion of colloidal particles and their spontaneous assembly—is challenging yet crucial for creating functional, out-of-equilibrium colloidal systems potentially useful for nano- and micromachines. Herein, by introducing the synthesis of active “patchy” colloids of various low-symmetry shapes, we demonstrate that the dynamics of such systems can be precisely tuned. The low-symmetry patchy colloids are made in bulk via a cluster-encapsulation-dewetting method. They carry essential information encoded in their shapes (particle geometry, number, size, and configurations of surface patches, etc.) that programs their locomotive and assembling behaviors. Under AC electric field, we show that the velocity of particle propulsion and the ability to brake and steer can be modulated by having two asymmetrical patches with various bending angles. The assembly of monopatch particles leads to the formation of dynamic and reconfigurable structures such as spinners and “cooperative swimmers” depending on the particle’s aspect ratios. A particle with two patches of different sizes allows for “directional bonding”, a concept popular in static assemblies but rare in dynamic ones. With the capability to make tunable and complex shapes, we anticipate the discovery of a diverse range of new dynamics and structures when other external stimuli (e.g., magnetic, optical, chemical, etc.) are employed and spark synergy with shapes.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html-
dc.relation.ispartofJournal of the American Chemical Society-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in [JournalTitle], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].-
dc.subjectAspect ratio-
dc.subjectChemical bonds-
dc.subjectElectric fields-
dc.subjectAutonomous locomotion-
dc.subjectColloidal particle-
dc.titleActive Patchy Colloids with Shape-Tunable Dynamics-
dc.typeArticle-
dc.identifier.emailWang, Y: wanglab@hku.hk-
dc.identifier.authorityWang, Y=rp02191-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/jacs.9b07785-
dc.identifier.pmid31448592-
dc.identifier.scopuseid_2-s2.0-85072368145-
dc.identifier.hkuros306833-
dc.identifier.volume141-
dc.identifier.issue37-
dc.identifier.spage14853-
dc.identifier.epage14863-
dc.publisher.placeUnited States-

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