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Article: Photonic Nanojet Mediated Backaction of Dielectric Microparticles

TitlePhotonic Nanojet Mediated Backaction of Dielectric Microparticles
Authors
Keywordsoptical manipulation
backaction force
photonic nanojet
negative optical force
dielectric particle
Issue Date2020
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/toc/apchd5/2/4
Citation
ACS Photonics, 2020, v. 7 n. 6, p. 1483-1490 How to Cite?
AbstractOptical radiation force points to the same direction as the photon flux, while the direction reversal is quite challenging and necessitates special efforts. Herein, we present the observation of a photonic nanojet-mediated backaction of dielectric particles owing to the local heating of solvent molecules inside the nanojet in a purely dielectric system. Such backaction has been verified to be photothermal, without the influence from thermally induced turbulence. Our findings have been theoretically corroborated by statistical analysis on the size-dependent force and speed. In addition to the increase with laser power, the backaction force is a competing effect between the absorption and thermal conductivity of the immersion medium and is also affected by the photothermally raised background temperature. The backaction force exerts on dielectric particles with a broad size range. Since most biological particles are dielectric, with a refractive index greater than that for the surrounding medium, this work could inspire applications in biophotonics, such as cell sorting and classification.
Persistent Identifierhttp://hdl.handle.net/10722/290173
ISSN
2019 Impact Factor: 6.864
2015 SCImago Journal Rankings: 3.475

 

DC FieldValueLanguage
dc.contributor.authorRen, YX-
dc.contributor.authorZeng, X-
dc.contributor.authorZhou, LM-
dc.contributor.authorKONG, C-
dc.contributor.authorMAO, H-
dc.contributor.authorQiu, CW-
dc.contributor.authorTsia, KK-
dc.contributor.authorWong, KKY-
dc.date.accessioned2020-10-22T08:23:04Z-
dc.date.available2020-10-22T08:23:04Z-
dc.date.issued2020-
dc.identifier.citationACS Photonics, 2020, v. 7 n. 6, p. 1483-1490-
dc.identifier.issn2330-4022-
dc.identifier.urihttp://hdl.handle.net/10722/290173-
dc.description.abstractOptical radiation force points to the same direction as the photon flux, while the direction reversal is quite challenging and necessitates special efforts. Herein, we present the observation of a photonic nanojet-mediated backaction of dielectric particles owing to the local heating of solvent molecules inside the nanojet in a purely dielectric system. Such backaction has been verified to be photothermal, without the influence from thermally induced turbulence. Our findings have been theoretically corroborated by statistical analysis on the size-dependent force and speed. In addition to the increase with laser power, the backaction force is a competing effect between the absorption and thermal conductivity of the immersion medium and is also affected by the photothermally raised background temperature. The backaction force exerts on dielectric particles with a broad size range. Since most biological particles are dielectric, with a refractive index greater than that for the surrounding medium, this work could inspire applications in biophotonics, such as cell sorting and classification.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/toc/apchd5/2/4-
dc.relation.ispartofACS Photonics-
dc.subjectoptical manipulation-
dc.subjectbackaction force-
dc.subjectphotonic nanojet-
dc.subjectnegative optical force-
dc.subjectdielectric particle-
dc.titlePhotonic Nanojet Mediated Backaction of Dielectric Microparticles-
dc.typeArticle-
dc.identifier.emailRen, YX: yxren@hku.hk-
dc.identifier.emailTsia, KK: tsia@hku.hk-
dc.identifier.emailWong, KKY: kywong@eee.hku.hk-
dc.identifier.authorityTsia, KK=rp01389-
dc.identifier.authorityWong, KKY=rp00189-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acsphotonics.0c00242-
dc.identifier.scopuseid_2-s2.0-85087396690-
dc.identifier.hkuros316957-
dc.identifier.volume7-
dc.identifier.issue6-
dc.identifier.spage1483-
dc.identifier.epage1490-
dc.publisher.placeUnited States-

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