Structure evolution of nanodiamond aggregates: a SANS and USANS study

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dc.contributor.authorKabir, IIen_AU
dc.contributor.authorOsborne, JCen_AU
dc.contributor.authorLu, Wen_AU
dc.contributor.authorMata, JPen_AU
dc.contributor.authorRehm, Cen_AU
dc.contributor.authorYeoh, GHen_AU
dc.contributor.authorErez, Ten_AU
dc.date.accessioned2023-02-08T02:00:11Zen_AU
dc.date.available2023-02-08T02:00:11Zen_AU
dc.date.issued2022-02-21en_AU
dc.date.statistics2022-04-22en_AU
dc.description.abstractUltra-small-angle neutron scattering (USANS) and small-angle neutron scattering (SANS) measurements, covering length scales from micrometres to nanometres, were made to investigate the structure of nanodiamonds (NDs) and their suspensions. These nanodiamonds were produced by two different techniques, namely by the detonation method and by the laser ablation of a carbon-hydrocarbon mixture. The (U)SANS results indicated the presence of structures four orders of magnitude larger than the dimensions of a single ND particle, consisting of aggregations of ND particles. This aggregation of the ND particles was studied by employing the contrast variation technique. Two different solvents, namely H2O and dimethyl sulfoxide (and their deuterated counterparts), were used to understand the role of hydrogen in the shape and size of the aggregates. The analysis of experimental data from SANS measurements also reveals the ND particles to have an ellipsoidal structure. Using a defined shape model and the SANS contrast variation technique, it was possible to characterize the non-diamond outer shell of the particles and determine the outer layer thickness. This clarification of the structure of the NDs will allow better preparation of suspensions/samples for various applications. Understanding the structure of NDs at multiple length scales also provides crucial knowledge of particle-particle interaction and its effect on the aggregation structures. © International Union of Crystallography - Open Access CC BY licence.en_AU
dc.description.sponsorshipThe neutron scattering experiments were part of proposals 3991 and 4390. This research did not receive any specific grant from funding agencies in the public, commercial or not-for-profit sectors. Open access publishing facilitated by University of New South Wales, as part of the Wiley–University of New South Wales agreement via the Council of Australian University Librarians.en_AU
dc.identifier.citationKabir, I. I., Osborn, J. C., Lu, W., Mata, J. P., Rehm, C., Yeoh, G. H., & Ersez, T. (2022). Structure evolution of nanodiamond aggregates: a SANS and USANS study. Journal of Applied Crystallography, 55(2), 353-361. doi:10.1107/S1600576722002084en_AU
dc.identifier.issn1600-5767en_AU
dc.identifier.issue2en_AU
dc.identifier.journaltitleJournal of Applied Crystallographyen_AU
dc.identifier.pagination353-361en_AU
dc.identifier.urihttps://doi.org/10.1107/S1600576722002084en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14614en_AU
dc.identifier.volume55en_AU
dc.language.isoenen_AU
dc.publisherInternational Union of Crystallographyen_AU
dc.subjectSmall angle scatteringen_AU
dc.subjectCold neutronsen_AU
dc.subjectLasersen_AU
dc.subjectCarbonen_AU
dc.subjectHydrocarbonsen_AU
dc.subjectDimethyl sulfoxideen_AU
dc.subjectParticlesen_AU
dc.subjectAgglomerationen_AU
dc.titleStructure evolution of nanodiamond aggregates: a SANS and USANS studyen_AU
dc.typeJournal Articleen_AU
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