Diamond-like-carbon nanoparticle production and agglomeration following UV multi-photon excitation of static naphthalene/helium gas mixtures

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dc.contributor.author Walsh, A. J.
dc.contributor.author Tielens, A. G. G. M.
dc.contributor.author Ruth, Albert A.
dc.date.accessioned 2017-01-19T12:05:55Z
dc.date.available 2017-01-19T12:05:55Z
dc.date.issued 2016-07-11
dc.identifier.citation Walsh, A. J., Tielens, A. G. G. M. and Ruth, A. A. (2016) 'Diamond-like-carbon nanoparticle production and agglomeration following UV multi-photon excitation of static naphthalene/helium gas mixtures', The Journal of Chemical Physics, 145(2), 024303 (12 pp). doi:10.1063/1.4955192 en
dc.identifier.volume 145 en
dc.identifier.issued 2 en
dc.identifier.startpage 024303-1 en
dc.identifier.endpage 024303-12 en
dc.identifier.issn 0021-9606
dc.identifier.uri http://hdl.handle.net/10468/3479
dc.identifier.doi 10.1063/1.4955192
dc.description.abstract We report the formation of nanoparticles with significant diamond character after UV multi-photon laser excitation of gaseous naphthalene, buffered in static helium gas, at room temperature. The nanoparticles are identified in situ by their absorption and scattering spectra between 400 and 850 nm, which are modeled using Mie theory. Comparisons of the particles’ spectroscopic and optical properties with those of carbonaceous materials indicate a sp3/sp2 hybridization ratio of 8:1 of the particles formed. The particle extinction in the closed static (unstirred) gas-phase system exhibits a complex and quasi-oscillatory time dependence for the duration of up to several hours with periods ranging from seconds to many minutes. The extinction dynamics of the system is based on a combination of transport features and particle interaction, predominantly agglomeration. The relatively long period of agglomeration allows for a unique analysis of the agglomeration process of diamond-like carbon nanoparticles in situ. en
dc.description.sponsorship Enterprise Ireland (Basic Research Grant Scheme Contract No. SC/2003/96); Higher Education Authority (HEA–PRTLI3 scheme); Science Foundation Ireland (SFI Research Frontier Programme (Contract No. 11/RFP/3233)); Nederlandse Organisatie voor Wetenschappelijk Onderzoek/Netherlands Organization for Scientific Research (NOW Spinoza Award) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher AIP Publishing en
dc.rights © 2016, AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in J. Chem. Phys. 145, 024303 (2016) and may be found at http://aip.scitation.org/doi/abs/10.1063/1.4955192 en
dc.subject Diamond-like carbon en
dc.subject Nanofabrication en
dc.subject Nanoparticles en
dc.subject Refractive index en
dc.subject Aromatic-hydrocarbon cations en
dc.subject Optical-properties en
dc.subject Detonation nanodiamond en
dc.subject Wavelength dependence en
dc.subject Amorphous-carbon en
dc.subject Graphite en
dc.subject Delivery en
dc.subject Phase en
dc.subject Soot en
dc.subject Fragmentation en
dc.title Diamond-like-carbon nanoparticle production and agglomeration following UV multi-photon excitation of static naphthalene/helium gas mixtures en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Albert Ruth, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: a.ruth@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 12 months after publication by the request of the publisher. en
dc.check.date 2017-07-11
dc.date.updated 2017-01-19T11:50:50Z
dc.description.version Published Version en
dc.internal.rssid 380236993
dc.internal.wokid WOS:000381153600014
dc.contributor.funder Enterprise Ireland en
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Nederlandse Organisatie voor Wetenschappelijk Onderzoek en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Chemical Physics en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress a.ruth@ucc.ie en
dc.identifier.articleid 024303


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