期刊
OPTICS EXPRESS
卷 24, 期 22, 页码 25785-25796出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.24.025785
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资金
- NSTC/UCF
- Florida Space Institute/NASA [63019022]
- NSF-EEC [1156747]
- CONACyT
- Div Of Engineering Education and Centers
- Directorate For Engineering [1156747] Funding Source: National Science Foundation
Simple optical techniques that can accurately and selectively identify organic and inorganic material in a reproducible manner are of paramount importance in biological sensing applications. In this work, we demonstrate that a nanoimprinted plasmonic pattern with locked-in dimensions supports sharp deterministic hybrid resonances when coupled with an optical cavity suitable for high sensitive surface detection. The surface sensing property of this hybrid system is quantified by precise atomic layer growth of aluminum oxide using the atomic layer deposition technique. The analyte specific sensing ability is demonstrated in the detection of two dissimilar analytes, inorganic amine-coated iron oxide nanoparticles and organic streptavidin protein. Femto to nanomolar detection limits were achieved with the proposed coupled plasmonic system based on the versatile and robust soft nanoimprinting technique, which promises practical low cost biosensors. (C) 2016 Optical Society of America
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