Size and space controlled hexagonal arrays of superparamagnetic iron oxide nanodots: magnetic studies and application

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dc.contributor.authorGhoshal, Tandra
dc.contributor.authorMaity, Tuhin
dc.contributor.authorSenthamaraikannan, Ramsankar
dc.contributor.authorShaw, Matthew T.
dc.contributor.authorCarolan, Patrick B.
dc.contributor.authorHolmes, Justin D.
dc.contributor.authorRoy, Saibal
dc.contributor.authorMorris, Michael A.
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2016-02-29T09:26:44Z
dc.date.available2016-02-29T09:26:44Z
dc.date.issued2013-09-27
dc.description.abstractHighly dense hexagonally arranged iron oxide nanodots array were fabricated using PS-b-PEO self-assembled patterns. The copolymer molecular weight, composition and choice of annealing solvent/s allows dimensional and structural control of the nanopatterns at large scale. A mechanism is proposed to create scaffolds through degradation and/or modification of cylindrical domains. A methodology based on selective metal ion inclusion and subsequent processing was used to create iron oxide nanodots array. The nanodots have uniform size and shape and their placement mimics the original self-assembled nanopatterns. For the first time these precisely defined and size selective systems of ordered nanodots allow careful investigation of magnetic properties in dimensions from 50 nm to 10 nm, which delineate the nanodots are superparamagnetic, well-isolated and size monodispersed. This diameter/spacing controlled iron oxide nanodots systems were demonstrated as a resistant mask over silicon to fabricate densely packed, identical ordered, high aspect ratio silicon nanopillars and nanowire features.en
dc.description.sponsorshipScience Foundation Ireland (SFI Semiconductor Corporation 2011-IN-2194 grant, 09/SIRG/I1621 grant, CSET CRANN grant, SFI PI project 11/PI/1201, SFI Principal Investigator support)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGHOSHAL, T., MAITY, T., SENTHAMARAIKANNAN, R., SHAW, M. T., CAROLAN, P., HOLMES, J. D., ROY, S. & MORRIS, M. A. 2013. Size and space controlled hexagonal arrays of superparamagnetic iron oxide nanodots: magnetic studies and application. Scientific Reports, 3, 2772. http://dx.doi.org/10.1038/srep02772en
dc.identifier.doi10.1038/srep02772
dc.identifier.endpage2772 (3)en
dc.identifier.issn2045-2322
dc.identifier.journaltitleScientific Reportsen
dc.identifier.startpage2772 (1)en
dc.identifier.urihttps://hdl.handle.net/10468/2409
dc.identifier.volume3en
dc.language.isoenen
dc.publisherNature Publishing Group, Macmillan Publishers Limited.en
dc.rights© The Authors, 2013.This work is licensed under a Creative Commons Attribution 3.0 Unported license. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0en
dc.rights.urihttp://creativecommons.org/licenses/by/3.0en
dc.subjectInformation storageen
dc.subjectMagnetic materialsen
dc.subjectMagnetic properties and materialsen
dc.subjectSynthesis and processingen
dc.titleSize and space controlled hexagonal arrays of superparamagnetic iron oxide nanodots: magnetic studies and applicationen
dc.typeArticle (peer-reviewed)en
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