Electron beam lithography designed silver nano-disks used as label free nano-biosensors based on localized surface plasmon resonance

buir.contributor.authorÖzbay, Ekmel
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
dc.citation.epage2597en_US
dc.citation.issueNumber3en_US
dc.citation.spage2587en_US
dc.citation.volumeNumber20en_US
dc.contributor.authorCinel, N. A.en_US
dc.contributor.authorButun, S.en_US
dc.contributor.authorÖzbay, Ekmelen_US
dc.date.accessioned2015-07-28T12:01:02Z
dc.date.available2015-07-28T12:01:02Z
dc.date.issued2012-01-20en_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractWe present a label-free, optical nano-biosensor based on the Localized Surface Plasmon Resonance (LSPR) that is observed at the metaldielectric interface of silver nano-disk arrays located periodically on a sapphire substrate by Electron-Beam Lithography (EBL). The nano-disk array was designed by finite-difference and time-domain (FDTD) algorithm-based simulations. Refractive index sensitivity was calculated experimentally as 221-354 nm/RIU for different sized arrays. The sensing mechanism was first tested with a biotin-avidin pair, and then a preliminary trial for sensing heat-killed Escherichia coli (E. coli) O157:H7 bacteria was done. Although the study is at an early stage, the results indicate that such a plasmonic structure can be applied to bio-sensing applications and then extended to the detection of specific bacteria species as a fast and low cost alternative. © 2012 Optical Society of America.en_US
dc.description.provenanceMade available in DSpace on 2015-07-28T12:01:02Z (GMT). No. of bitstreams: 1 10.1364-OE.20.002587.pdf: 1354627 bytes, checksum: d0ef1f7c414a2aece42f5523a8970bbd (MD5)en
dc.identifier.doi10.1364/OE.20.002587en_US
dc.identifier.issn1094-4087
dc.identifier.urihttp://hdl.handle.net/11693/12337
dc.language.isoEnglishen_US
dc.publisherOptical Society of Americaen_US
dc.relation.isversionofhttp://dx.doi.org/10.1364/OE.20.002587en_US
dc.source.titleOptics Expressen_US
dc.subjectBacteriaen_US
dc.subjectBiosensorsen_US
dc.subjectElectron Beam Lithographyen_US
dc.subjectElectron Beamsen_US
dc.subjectEscherichia Colien_US
dc.subjectInterfaces (materials)en_US
dc.subjectPlasmonsen_US
dc.subjectRefractive Indexen_US
dc.subjectSapphireen_US
dc.titleElectron beam lithography designed silver nano-disks used as label free nano-biosensors based on localized surface plasmon resonanceen_US
dc.typeArticleen_US

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