Impedance spectroscopy of colloids

Low-Frequency Dielectric Response of Polystyrene Latex Dispersions

“…The surface charge density 0 is Ϫ6.4 C/cm 2 . The dielectric and conductivity spectra were determined in the frequency range 90 Hz-500 kHz using the four-electrode dielectric spectrometer of Kijlstra et al (32). The four-electrode technique suppresses complications due to electrode polarization.…”

“…[32]- [34] relates the surface conduction to the total counterion countercharge in the double layer ( 2…”

Single Cell Impedance Measurements using Microfabricated Electrodes and Labview Graphical Programming

“…Another Common materials that are studied using impedance spectroscopy include colloids [25], cancerous tissue [20], bovine chromaffin cells [26], yeast [27], red blood cells [28], and many other cell types. Even dielectric properties of single stranded DNA and double stranded DNA can be studied by suspending the strands and measuring impedance [29].…”

Design, Fabrication, and Implementation of a Single-Cell Capture Chamber for a Microfluidic Impedance Sensor

“…The goal is to create a catalog of impedance spectra and compare the data generated from experimental testing to those in literature [10,[13][14][15][16][17][18].…”

“…However, these devices have two problems; one, the duration of analysis is dependent on the average velocity of the fluid, and two, the target species passes through the excitation/sensing chamber at different positions (heights), yielding different spectra based on location. Other works in microfluidic impedance sensing have described the design and fabrication to create their devices [13][14][15][16][17][18].…”