Anemone-like nanostructures for non-lithographic reproducible large-area and ultra-sensitive SERS substrates

Simple item page
buir.contributor.authorBayındır, Mehmet
dc.citation.epage12717en_US
dc.citation.issueNumber21en_US
dc.citation.spage12710en_US
dc.citation.volumeNumber6en_US
dc.contributor.authorDaglar, B.en_US
dc.contributor.authorDemirel, G. B.en_US
dc.contributor.authorKhudiyev, T.en_US
dc.contributor.authorDogan, T.en_US
dc.contributor.authorTobail O.en_US
dc.contributor.authorAltuntas, S.en_US
dc.contributor.authorBuyukserin F.en_US
dc.contributor.authorBayındır, Mehmeten_US
dc.date.accessioned2016-02-08T10:59:10Z
dc.date.available2016-02-08T10:59:10Z
dc.date.issued2014en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentDepartment of Physicsen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractThe melt-infiltration technique enables the fabrication of complex nanostructures for a wide range of applications in optics, electronics, biomaterials, and catalysis. Here, anemone-like nanostructures are produced for the first time under the surface/interface principles of melt-infiltration as a non-lithographic method. Functionalized anodized aluminum oxide (AAO) membranes are used as templates to provide large-area production of nanostructures, and polycarbonate (PC) films are used as active phase materials. In order to understand formation dynamics of anemone-like structures finite element method (FEM) simulations are performed and it is found that wetting behaviour of the polymer is responsible for the formation of cavities at the caps of the structures. These nanostructures are examined in the surface-enhanced-Raman-spectroscopy (SERS) experiment and they exhibit great potential in this field. Reproducible SERS signals are detected with relative standard deviations (RSDs) of 7.2-12.6% for about 10 000 individual spots. SERS measurements are demonstrated at low concentrations of Rhodamine 6G (R6G), even at the picomolar level, with an enhancement factor of ∼1011. This high enhancement factor is ascribed to the significant electric field enhancement at the cavities of nanostructures and nanogaps between them, which is supported by finite difference time-domain (FDTD) simulations. These novel nanostructured films can be further optimized to be used in chemical and plasmonic sensors and as a single molecule SERS detection platform.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:59:10Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2014en
dc.identifier.doi10.1039/c4nr03909ben_US
dc.identifier.issn2040-3364
dc.identifier.urihttp://hdl.handle.net/11693/26393
dc.language.isoEnglishen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.isversionofhttp://dx.doi.org/10.1039/c4nr03909ben_US
dc.source.titleNanoscaleen_US
dc.subjectSERS substrateen_US
dc.subjectUltra sensitivesen_US
dc.titleAnemone-like nanostructures for non-lithographic reproducible large-area and ultra-sensitive SERS substratesen_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Anemone-like nanostructures for non-lithographic, reproducible, large-area, and ultra-sensitive SERS substrates.pdf
Size:
3.11 MB
Format:
Adobe Portable Document Format
Description:
Full printable version
Download

Collections

Scholarly Publications - UNAM
Scholarly Publications - NANOTAM
Scholarly Publications - Physics