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Dielectric characterization of bacterial cells using dielectrophoresis
Author(s) -
Sanchis A.,
Brown A. P.,
Sancho M.,
Martínez G.,
Sebastián J. L.,
Muñoz S.,
Miranda J. M.
Publication year - 2007
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.20317
Subject(s) - dielectrophoresis , dielectric , escherichia coli , bacteria , staphylococcus aureus , characterization (materials science) , materials science , gram negative bacteria , electrophoresis , biological system , nanotechnology , microbiology and biotechnology , chemistry , biology , optoelectronics , chromatography , biochemistry , genetics , microfluidics , gene
Measurements of dielectrophoretic collection spectra of Escherichia coli and Staphylococcus aureus suspensions are used for obtaining dielectric characteristics of both types of bacteria. The experiments are interpreted using a numerical method that models the cells as compartmented spherical or rod‐like particles. We show the usefulness of this simple method to extract significant information about the electrical properties of Gram‐negative and ‐positive bacteria. Bioelectromagnetics 28:393–401, 2007. © 2007 Wiley‐Liss, Inc.