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Article: X-ray-Powered Micromotors

TitleX-ray-Powered Micromotors
Authors
Keywordsmicromotors
light-driven actuators
X-rays
water radiolysis
microbubbles
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick
Citation
ACS Applied Materials & Interfaces, 2019, v. 11 n. 17, p. 15727-15732 How to Cite?
AbstractLight-powered wireless manipulation of small objects in fluids has been of interest for biomedical and environmental applications. Although many techniques employing UV–vis–NIR light sources have been devised, new methods that hold greater penetrating power deep into medium are still in demand. Here, we develop a method to exploit X-rays to propel half-metal-coated Janus microparticles in aqueous solution. The Janus particles are simultaneously propelled and visualized in real-time by using a full-field transmission X-ray microscope. Our real-time observation discovers that the propulsive motion follows the bubble growth enhanced by water radiolysis near the particle surface under X-ray irradiation. We also show that the propulsion speed is remotely controlled by varying the radiation dose. We expect this work to open opportunities to employ light-powered micro/nanomotors in opaque environments, potentially by combining with medical imaging or nondestructive testing.
Persistent Identifierhttp://hdl.handle.net/10722/273897
ISSN
2023 Impact Factor: 8.3
2023 SCImago Journal Rankings: 2.058
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXU, Z-
dc.contributor.authorCHEN, M-
dc.contributor.authorLee, H-
dc.contributor.authorFeng, SP-
dc.contributor.authorPark, JY-
dc.contributor.authorLee, S-
dc.contributor.authorKim, JT-
dc.date.accessioned2019-08-18T14:50:52Z-
dc.date.available2019-08-18T14:50:52Z-
dc.date.issued2019-
dc.identifier.citationACS Applied Materials & Interfaces, 2019, v. 11 n. 17, p. 15727-15732-
dc.identifier.issn1944-8244-
dc.identifier.urihttp://hdl.handle.net/10722/273897-
dc.description.abstractLight-powered wireless manipulation of small objects in fluids has been of interest for biomedical and environmental applications. Although many techniques employing UV–vis–NIR light sources have been devised, new methods that hold greater penetrating power deep into medium are still in demand. Here, we develop a method to exploit X-rays to propel half-metal-coated Janus microparticles in aqueous solution. The Janus particles are simultaneously propelled and visualized in real-time by using a full-field transmission X-ray microscope. Our real-time observation discovers that the propulsive motion follows the bubble growth enhanced by water radiolysis near the particle surface under X-ray irradiation. We also show that the propulsion speed is remotely controlled by varying the radiation dose. We expect this work to open opportunities to employ light-powered micro/nanomotors in opaque environments, potentially by combining with medical imaging or nondestructive testing.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick-
dc.relation.ispartofACS Applied Materials & Interfaces-
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.subjectmicromotors-
dc.subjectlight-driven actuators-
dc.subjectX-rays-
dc.subjectwater radiolysis-
dc.subjectmicrobubbles-
dc.titleX-ray-Powered Micromotors-
dc.typeArticle-
dc.identifier.emailLee, H: hslee611@hku.hk-
dc.identifier.emailFeng, SP: hpfeng@hku.hk-
dc.identifier.emailKim, JT: jtkim@hku.hk-
dc.identifier.authorityFeng, SP=rp01533-
dc.identifier.authorityKim, JT=rp02152-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acsami.9b00174-
dc.identifier.pmid30969101-
dc.identifier.scopuseid_2-s2.0-85065170558-
dc.identifier.hkuros301609-
dc.identifier.volume11-
dc.identifier.issue17-
dc.identifier.spage15727-
dc.identifier.epage15732-
dc.identifier.isiWOS:000466988800059-
dc.publisher.placeUnited States-
dc.identifier.issnl1944-8244-

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