Non-fluorescent nanoscopic monitoring of a single trapped nanoparticle via nonlinear point sources

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dc.contributor.authorYoon, Seung Juko
dc.contributor.authorLee, Jungminko
dc.contributor.authorHan, Sangyoonko
dc.contributor.authorKim, Chang-Kyuko
dc.contributor.authorAhn, Chi Wonko
dc.contributor.authorKim, Myung-Kiko
dc.contributor.authorLee, Yong-Heeko
dc.date.accessioned2018-07-24T01:37:50Z-
dc.date.available2018-07-24T01:37:50Z-
dc.date.created2018-06-25-
dc.date.created2018-06-25-
dc.date.created2018-06-25-
dc.date.issued2018-06-
dc.identifier.citationNATURE COMMUNICATIONS, v.9, pp.2218-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/10203/243694-
dc.description.abstractDetection of single nanoparticles or molecules has often relied on fluorescent schemes. However, fluorescence detection approaches limit the range of investigable nanoparticles or molecules. Here, we propose and demonstrate a non-fluorescent nanoscopic trapping and monitoring platform that can trap a single sub-5-nm particle and monitor it with a pair of floating nonlinear point sources. The resonant photon funnelling into an extremely small volume of similar to 5 x 5 x 7 nm(3) through the three-dimensionally tapered 5-nm-gap plasmonic nanoantenna enables the trapping of a 4-nm CdSe/ZnS quantum dot with low intensity of a 1560-nm continuous-wave laser, and the pumping of 1560-nm femtosecond laser pulses creates strong background-free second-harmonic point illumination sources at the two vertices of the nanoantenna. Under the stable trapping conditions, intermittent but intense nonlinear optical spikes are observed on top of the second-harmonic signal plateau, which is identified as the 3.0-Hz Kramers hopping of the quantum dot trapped in the 5-nm gap.-
dc.languageEnglish-
dc.publisherNATURE PUBLISHING GROUP-
dc.titleNon-fluorescent nanoscopic monitoring of a single trapped nanoparticle via nonlinear point sources-
dc.typeArticle-
dc.identifier.wosid000434379800015-
dc.identifier.scopusid2-s2.0-85048248872-
dc.type.rimsART-
dc.citation.volume9-
dc.citation.beginningpage2218-
dc.citation.publicationnameNATURE COMMUNICATIONS-
dc.identifier.doi10.1038/s41467-018-04689-5-
dc.contributor.localauthorLee, Yong-Hee-
dc.contributor.nonIdAuthorHan, Sangyoon-
dc.contributor.nonIdAuthorKim, Chang-Kyu-
dc.contributor.nonIdAuthorAhn, Chi Won-
dc.contributor.nonIdAuthorKim, Myung-Ki-
dc.description.isOpenAccessY-
dc.type.journalArticleArticle-
dc.subject.keywordPlusHARMONIC GENERATION-
dc.subject.keywordPlusOPTICAL TWEEZERS-
dc.subject.keywordPlusSCATTERING-
dc.subject.keywordPlusPROTEIN-
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