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Graded-lattice AAO photonic crystal heterostructure for high Q refractive index sensing
- Authors
- Lee, Jungmin; Bae, Kyuyoung; Kang, Gumin; Choi, Minjung; Baek, Seunghwa; Yoo, Do-sik; Lee, Chang-Won; Kim, Kyoungsik
- Issue Date
- 2015
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- RSC ADVANCES, v.5, no.88, pp.71770 - 71777
- Journal Title
- RSC ADVANCES
- Volume
- 5
- Number
- 88
- Start Page
- 71770
- End Page
- 71777
- ISSN
- 2046-2069
- Abstract
- We present a low-cost and versatile optical sensor based on anodic aluminum oxide (AAO) graded-lattice photonic crystal heterostructure (PCH) template controlled by voltage pulse and electrolyte temperature. Designed PCH shows high Q factor up to similar to 55 from the first order side band peak in the reflectance spectra and vivid color change due to infiltrated analytes. Highly linear refractive index sensitivity "d lambda/dn" up to 441 nm RIU-1 could be obtained independent of analytes' polarities. Superb perceptual colorimetric sensing performance was attained up to 0.01 according to CIELab tristimulus mapping analysis.
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Related Researcher
- Yoo, Do Sik
- Engineering (Electronic & Electrical Engineering)