Journal
OPTICAL MATERIALS
Volume 75, Issue -, Pages 739-743Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2017.11.043
Keywords
Plasmonic sensing; Color filter; Angle-independent; Polarization-independent
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Funding
- research grants of 100 Talents Program of Sun Yat-Sen University [76120-18821107]
- State Key Laboratory of Optoelectronic Materials and Technologies of Sun Yat-Sen University
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We develop an effective method for glucose sensing by using a plasmonic color filter (PCF) integrated with a microfluidic chip. The morphology of PCF is composed of hybrid nanopillars fabricated with SiO2 and Au thin-films on silicon substrate. It exhibits angle-independence, polarization-independence and wafer-level fabrication, which are the most important factors for color filters for industrial applications. The shift of resonant wavelength is 56 nm with a stable bandwidth (similar to 30 nm) by varying concentration of glucose solution. The sensitivity is 157.61 nm/RIU and the corresponding figure-of-merit is 5.25. Such strategy can be exploited to further increase the detection and potentially enter the ultra-strong coupling regime in chemical solution sensors. (C) 2017 Elsevier B.V. All rights reserved.
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