Engineering and Computer Science Faculty Publications
A metamaterial/liquid-core waveguide microfluidic optical sensor
Document Type
Article
Publication Date
12-2019
Journal Title
Sensors and Actuators A: Physical
ISSN
1873-3069
Volume
300
Article Number
111592
DOI
https://doi.org/10.1016/j.sna.2019.111592
Abstract
This paper introduces the design of a novel microfluidic refractometric optical sensor. The sensor is able to detect a liquid analyte by converting the change in the refractive index (RI) of the analyte to a shift of resonance peak in the output spectrum. A liquid-core waveguide and gold/dielectric metamaterial are integrated in the sensor design, producing resonance in the waveguide when the light interacts with the metamaterial structure in the core. Finite element analysis is used to simulate the properties of the sensor to optimize the design. Sample sensors are fabricated and tested with liquid analytes which have known refractive indices. Experimental results are well matched to the simulation proving high sensitivity and good repeatability of the sensors. A sensitivity greater than 1280 nm/RIU is achieved by this novel sensor.
Keywords
Optical sensor, liquid core waveguide, metamaterial
Recommended Citation
Wu, Yixuan; Meng, Yuan; Yakupoglu, Baha; and Adams, Mark, "A metamaterial/liquid-core waveguide microfluidic optical sensor" (2019). Engineering and Computer Science Faculty Publications. 477.
https://digitalcommons.cedarville.edu/engineering_and_computer_science_publications/477
