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dc.contributor.authorLiu, Yonghao
dc.contributor.authorZhou, Weidong
dc.contributor.authorSun, Yuze
dc.date.accessioned2017-10-09T22:15:37Z
dc.date.available2017-10-09T22:15:37Z
dc.date.issued2017-08-11
dc.identifier.citationPublished in Sensors 17(8): 1-12, 2017en_US
dc.identifier.urihttp://hdl.handle.net/10106/27015
dc.description.abstractHigh sensitivity (S) and high quality factor (Q) are desirable to achieve low detection limit in label-free optical sensors. In this paper, we theoretically demonstrate that single-layer and coupled bi-layer photonic crystal slabs (PCS) possess simultaneously high S and high Q near the bound states in the continuum (BIC). We theoretically achieved S > 800 nm/RIU and Q > 107 in refractive index sensing in the 1400–1600 nm telecom optical wavelength bands. We experimentally demonstrated an S of 94 nm/RIU and a Q of 1.2 x 104, with a detection limit of 6 X10 -5 refractive index unit. These sensor designs can find applications in biochemical sensing, environmental monitoring, and healthcare.en_US
dc.description.sponsorshipThis work was supported by US NSF under Grant No. ECCS-1407947 and US ARO W911NF-15-1-0431.en_US
dc.language.isoen_USen_US
dc.publisherMDPIen_US
dc.rightsAttribution 4.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/us/*
dc.subjectSensor designs -- opticalen_US
dc.subjectFano resonanceen_US
dc.subjectLabel-free sensoren_US
dc.titleOptical Refractive Index Sensing Based on High-Q Bound States in the Continuum in Free-Space Coupled Photonic Crystal Slabsen_US
dc.typeArticleen_US
dc.publisher.departmentDepartment of Electrical Engineering, The University of Texas at Arlingtonen_US
dc.identifier.externalLinkdoi:10.3390/s17081861
dc.identifier.externalLinkDescriptionThe original publication is available at Article DOIen_US
dc.creator.orcidSun, Yuze - orcid.org/0000-0001-5149-2277


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Attribution 4.0 United States
Except where otherwise noted, this item's license is described as Attribution 4.0 United States