Corpus ID: 17482069

A Dielectric Spectrometer for Liquid Using the Electromagnetic Induction Method

  title={A Dielectric Spectrometer for Liquid Using the Electromagnetic Induction Method},
  author={Hideki Wakamatsu},
Dielectric spectroscopy is useful for the characterization of colloidal dispersions. In the past, dielectric spectroscopy has been attempted using parallel metal electrodes to measure the permittivity and conductivity of colloids. However, it is difficult in practice to make these measurements in conductive solutions because large measurement errors can be caused by electrode polarization, which is a kind of contact impedance between the electrode and the solution. Electrode polarization… Expand
Inductive dielectric analyzer
One of the approaches to bypass the problem of electrode polarization in dielectric measurements is the free electrode method. The advantage of this technique is that, the probing electric field inExpand
A review of RF and microwave techniques for dielectric measurements on polar liquids
The requirements for dielectric measurements on polar liquids lie largely in two areas. First there is scientific interest in revealing the structure of and interactions between the molecules - thisExpand
Electrode polarization in dielectric measurements: a review
In this review, we present an overview of the state of the art concerning the fundamental properties of electrode polarization (EP) of interest in the measurement of high conductivity samples and itsExpand
Experimental and theoretical studies of the effect of electrode polarisation on capacitances of blood and potassium chloride solution
The effects of electrode polarisation on the observed capacitances of electrolytic solutions, including whole blood, plasma and potassium chloride solution, have been investigated experimentally and it was concluded that the observed α dispersion is not a real one that represents the specific features of the samples themselves, but an apparent one that represent the characteristics of the whole measurement system, including the electrodes. Expand
Application of boundary element method to calculation of the complex permittivity of suspensions of cells in shape of Dinfinityh symmetry.
  • K. Sekine
  • Materials Science, Medicine
  • Bioelectrochemistry
  • 2000
Results of the calculations showed that the permittivity and conductivity at high frequencies were insensitive to the change in the shape and could not be imitated by the calculation using analytical methods with shelled spheroid models. Expand
Inductively Coupled Wideband Transceiver for Bioimpedance Spectroscopy (IBIS) a
Abstract: Most measurement devices for bioimpedance spectroscopy are coupled to the measured object (tissue) via electrodes. At frequencies > 500 kHz, they suffer from artifacts due to strayExpand
A Low Frequency Electromagnetic Sensor for Indirect Measurement of Glucose Concentration: In Vitro Experiments in Different Conductive Solutions
An electromagnetic sensor was able to detect the effect of glucose variations over a wide range of concentrations, with a sensitivity of ∼0.22 mV/(mg/dL), and may be useful in a new approach for non-invasive and non-contact glucose monitoring. Expand
Galvanic decoupled sensor for monitoring biomass concentration during fermentation processes
Abstract A new sensor for monitoring the active biomass during fermentation processes is presented, which determines the electrical impedance without any contact of the electrodes to the liquid cellExpand
Cell Concentration Sensor for Micro-Bioreactors: Impedance Sensor
This thesis describes a bachelor graduation project of the study Electrical Engineering at Delft University of Technology. The purpose of this project is to develop an impedance sensor that canExpand
Correction of electrode polarization contributions to the dielectric properties of normal and cancerous breast tissues at audio/radiofrequencies.
This study shows that dielectric spectroscopy has the potential to offer a viable alternative to the current methods for detection of breast cancer in vivo and is used to demonstrate that significant variations in the electrical properties are detected at a position where a tumor is located. Expand


A Visual Engineering Environment for Test Software Development
This article will provide a general overview of the development of HP VEE, its feature set, and how it applies the concept of the executable block diagram. Expand
Dielectric behavior of nonspherial cells in culture
  • Biochimica et Biophysica Acta
  • 1995
Evaluation of Colloids by Dielectric Spectroscopy, HP Application Note 380-3
  • Evaluation of Colloids by Dielectric Spectroscopy, HP Application Note 380-3