Capacitive sensor for continuous monitoring of high-volume droplet microfluidic generation
AuthorsConchouso Gonzalez, David
Carreno, Armando Arpys Arevalo
Foulds, Ian G.
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Physical Sciences and Engineering (PSE) Division
Mechanical Engineering Program
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AbstractThis paper presents a capacitive sensor for monitoring parallel microfluidic droplet generation. The great electric permittivity difference between common droplet microfluidic fluids such as air, oil and water (ϵoil ≈ 2–3 and ϵwater ≈ 80.4), allows for accurate detection of water in oil concentration changes. Capacitance variations as large as 10 pF between a channel filled with water or dodecane, are used to continuously monitor the output of a parallelization system producing 150 µl/min of water in dodecane emulsions. We also discuss a low cost fabrication process to manufacture these capacitive sensors, which can be integrated to different substrates.
CitationConchouso D, Arevalo A, Castro D, Kavaldzhiev M, Foulds IG (2016) Capacitive sensor for continuous monitoring of high-volume droplet microfluidic generation. 2016 IEEE 11th Annual International Conference on Nano/Micro Engineered and Molecular Systems (NEMS). Available: http://dx.doi.org/10.1109/NEMS.2016.7758265.
Journal2016 IEEE 11th Annual International Conference on Nano/Micro Engineered and Molecular Systems (NEMS)