Sensors 2017, 17(1), 63; https://doi.org/10.3390/s17010063
Integration of Curved D-Type Optical Fiber Sensor with Microfluidic Chip
1
Department of Physics, Fu-Jen Catholic University, New Taipei City 24205, Taiwan
2
Graduate Institute of Applied Science and Engineering, Fu-Jen Catholic University, New Taipei City 24205, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 22 November 2016 / Revised: 16 December 2016 / Accepted: 27 December 2016 / Published: 30 December 2016
(This article belongs to the Section Physical Sensors)
Abstract
A curved D-type optical fiber sensor (OFS) combined with a microfluidic chip is proposed. This OFS, based on surface plasmon resonance (SPR) of the Kretchmann’s configuration, is applied as a biosensor to measure the concentrations of different bio-liquids such as ethanol, methanol, and glucose solutions. The SPR phenomenon is attained by using the optical fiber to guide the light source to reach the side-polished, gold-coated region. Integrating this OFS with a polymethylmethacrylate (PMMA)-based microfluidic chip, the SPR spectra for liquids with different refractive indices are recorded. Experimentally, the sensitivity of the current biosensor was calculated to be in the order of 10−5 RIU. This microfluidic chip-integrated OFS could be valuable for monitoring subtle changes in biological samples such as blood sugar, allergen, and biomolecular interactions. View Full-Text
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MDPI and ACS Style
Sun, Y.-S.; Li, C.-J.; Hsu, J.-C. Integration of Curved D-Type Optical Fiber Sensor with Microfluidic Chip. Sensors 2017, 17, 63.
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