Simulating electrical properties of interdigitated electrode designs for impedance-based biosensing applications

DOIResolve DOI: http://doi.org/10.1109/CCECE.2015.7129305
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TypeArticle
Proceedings title2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)
Conference2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE), May 3-6, 2015, Halifax, NS, Canada
ISBN978-1-4799-5827-6
978-1-4799-5829-0
Pages370375
Subjectelectrodes; biological system modeling; electric fields; biosensors; gold; nanoparticles; electric variables measurement
AbstractIn this paper, we describe a point-of-care biosensor design. The uniqueness of our design is in its capability for detecting a wide variety of target biomolecules and the simplicity of nanoparticle enhanced electrical detection. The electrical properties of interdigitated electrodes and the mechanism for gold nanoparticle-enhanced impedance-based biosensor systems based on these electrodes were simulated using COMSOL Multiphysics software. Understanding these properties and how they can be affected by the design of the sensor, environment during detection, and target biomolecules is vital in designing effective biosensor devices. Simulations were used to show electrical screening for interdigitated electrodes in a salt solution as well as the electric field between individual digits of electrodes. Using these simulations, it was observed that gold nanoparticles bound closely to interdigitated electrodes can lower the electric field magnitude between the digits of the electrode.
Publication date
PublisherIEEE
LanguageEnglish
AffiliationNational Institute for Nanotechnology; National Research Council Canada
Peer reviewedYes
NPARC number23001605
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Record identifierf516acfa-f4a3-4462-895d-69844554b590
Record created2017-03-09
Record modified2017-03-09
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