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), 69-79. (doi:10.1049/iet-nbt:20070019).


Download (663Kb) | Preview


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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1049/iet-nbt:20070019
ISSNs: 1751-8741 (print)
Related URLs:
Divisions : Faculty of Physical Sciences and Engineering > Electronics and Computer Science
ePrint ID: 264424
Accepted Date and Publication Date:
Date Deposited: 21 Aug 2007
Last Modified: 31 Mar 2016 14:09
Further Information:Google Scholar

Actions (login required)

View Item View Item

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics