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Analytical electric field and sensitivity analysis for two microfluidic impedance cytometer designs

Sun, Tao, Green, Nicolas G, Gawad, Shady and Morgan, Hywel (2007) Analytical electric field and sensitivity analysis for two microfluidic impedance cytometer designs IET Nanobiotechnology, 1, (5), pp. 69-79. (doi:10.1049/iet-nbt:20070019).

Record type: Article


Microfabricated impedance cytometers have been developed to measure the electrical impedance of single biological particles at high speed. A general approach to analytically solve the electric field distributions for two different designs of cytometers: parallel facing electrodes and coplanar electrodes, using the Schwarz–Christoffel Mapping method is presented. Compared to previous analytical solutions, our derivations are more systematic and solutions are more straightforward. The solutions have been validated by comparison with numerical simulations performed using the finite element method. The influences on the electric field distribution due to the variations in the geometry of the devices have been discussed. A simple method is used to determine the impedance sensitivity of the system and to compare the two electrode designs. For identical geometrical parameters, we conclude that the parallel electrodes design is more sensitive than the coplanar electrodes.

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Published date: 2007
Organisations: Electronics & Computer Science


Local EPrints ID: 264424
ISSN: 1751-8741
PURE UUID: 7fba18c1-d7ed-40bc-8cc3-6617d50fe2b7
ORCID for Nicolas G Green: ORCID iD
ORCID for Hywel Morgan: ORCID iD

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Date deposited: 21 Aug 2007
Last modified: 18 Jul 2017 07:35

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Author: Tao Sun
Author: Nicolas G Green ORCID iD
Author: Shady Gawad
Author: Hywel Morgan ORCID iD

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