Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/101742
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dc.contributor.authorLaw, C.en
dc.contributor.authorSantos, A.en
dc.contributor.authorNemati, M.en
dc.contributor.authorLosic, D.en
dc.date.issued2016en
dc.identifier.citationACS Applied Materials and Interfaces, 2016; 8(21):13542-13554en
dc.identifier.issn1944-8244en
dc.identifier.issn1944-8252en
dc.identifier.urihttp://hdl.handle.net/2440/101742-
dc.description.abstractThis study presents a sawtooth-like pulse anodization approach aiming to create a new type of photonic crystal structure based on nanoporous anodic alumina. This nanofabrication approach enables the engineering of the effective medium of nanoporous anodic alumina in a sawtooth-like manner with precision. The manipulation of various anodization parameters such as anodization period, anodization amplitude, number of anodization pulses, ramp ratio and pore widening time allows a precise control and fine-tuning of the optical properties (i.e., characteristic transmission peaks and interferometric colors) exhibited by nanoporous anodic alumina photonic crystals (NAA-PCs). The effect of these anodization parameters on the photonic properties of NAA-PCs is systematically evaluated for the establishment of a fabrication methodology toward NAA-PCs with tunable optical properties. The effective medium of the resulting NAA-PCs is demonstrated to be optimal for the development of optical sensing platforms in combination with reflectometric interference spectroscopy (RIfS). This application is demonstrated by monitoring in real-time the formation of monolayers of thiol molecules (11-mercaptoundecanoic acid) on the surface of gold-coated NAA-PCs. The obtained results reveal that the adsorption mechanism between thiol molecules and gold-coated NAA-PCs follows a Langmuir isotherm model, indicating a monolayer sorption mechanism.en
dc.description.statementofresponsibilityCheryl Suwen Law, Abel Santos, Mahdieh Nemati, and Dusan Losicen
dc.language.isoenen
dc.publisherAmerican Chemical Societyen
dc.rights© 2016 American Chemical Societyen
dc.subjectSawtooth-like pulse anodization; structural engineering; nanoporous anodic alumina; photonic crystals; reflectometric interference spectroscopyen
dc.titleStructural engineering of nanoporous anodic alumina photonic crystals by sawtooth-like pulse anodizationen
dc.typeJournal articleen
dc.identifier.rmid0030048913en
dc.identifier.doi10.1021/acsami.6b03900en
dc.relation.granthttp://purl.org/au-research/grants/arc/DE140100549en
dc.relation.granthttp://purl.org/au-research/grants/arc/DP120101680en
dc.relation.granthttp://purl.org/au-research/grants/arc/FT110100711en
dc.identifier.pubid251896-
pubs.library.collectionChemical Engineering publicationsen
pubs.library.teamDS14en
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
dc.identifier.orcidLosic, D. [0000-0002-1930-072X]en
Appears in Collections:Chemical Engineering publications

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