Light-confining nanoporous anodic alumina microcavities by apodized stepwise pulse anodization

Simple item page
dc.contributor.authorLaw, S.
dc.contributor.authorLim, S.
dc.contributor.authorMacalincag, R.
dc.contributor.authorAbell, A.D.
dc.contributor.authorSantos, A.
dc.date.issued2018
dc.description.abstractThis study presents an innovative approach to fabricate nanoporous anodic alumina optical microcavities (NAA-μCVs) with enhanced quality factor and versatile optical properties. An apodization strategy using a logarithmic negative function is applied to a stepwise pulse anodization process in order to engineer the effective medium of NAA so that it confines light efficiently. The architecture of these light-trapping photonic crystals is composed of two highly reflecting mirrors with an asymmetrically apodized effective medium. Various anodization parameters such as the anodization time, anodization period, current density offset, and pore-widening time are systematically modified to assess their effect on the optical properties of NAA-μCVs in terms of the quality factor and position of the resonance band. We demonstrate that this fabrication approach enables the generation of NAA-μCVs with a high quality factor (∼113) and well-resolved and tunable resonance bands across the spectral regions, from UV to near-IR, through manipulation of the anodization parameters. These results represent a comprehensive rationale for the development of high-quality NAA-μCVs with enhanced light-confining capabilities, providing new opportunities for further fundamental and applied research across a broad range of fields and disciplines such as photonics and optical sensing.
dc.description.statementofresponsibilityCheryl Suwen Law, Yee Lim, Raeanne M. Macalincag, Andrew D. Abell, and Abel Santos
dc.identifier.citationACS Applied Nano Materials, 2018; 1(9):4418-4434
dc.identifier.doi10.1021/acsanm.8b00494
dc.identifier.issn2574-0970
dc.identifier.issn2574-0970
dc.identifier.orcidLaw, S. [0000-0002-3276-8052]
dc.identifier.orcidLim, S. [0000-0002-5677-9039]
dc.identifier.orcidAbell, A.D. [0000-0002-0604-2629]
dc.identifier.orcidSantos, A. [0000-0002-5081-5684]
dc.identifier.urihttp://hdl.handle.net/2440/116316
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/DE140100549
dc.relation.granthttp://purl.org/au-research/grants/arc/CE140100003
dc.rights© 2018 American Chemical Society
dc.source.urihttps://doi.org/10.1021/acsanm.8b00494
dc.subjectNanoporous anodic alumina; optical microcavity; light confinement; apodized anodization; quality factor
dc.titleLight-confining nanoporous anodic alumina microcavities by apodized stepwise pulse anodization
dc.typeJournal article
pubs.publication-statusPublished

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
hdl_116316.pdf
Size:
3.27 MB
Format:
Adobe Portable Document Format
Description:
Accepted version
Download

Collections

IPAS publications